1. General description
The 74HC244-Q100; 74HCT244-Q100 is an 8-bit buffer/line driver with 3-state outputs.
The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two
output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on
nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp
diodes. This enables the use of current limiting resistors to interface inputs to voltages in
excess of VCC.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from 40 C to +85 C and from 40 C to +125 C
Input levels:
For 74HC244-Q100: CMOS level
For 74HCT244-Q100: TTL level
Octal bus interface
Non-inverting 3-state outputs
Multiple package options
Complies with JEDEC standard no. 7 A
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 )
74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
Rev. 1 — 7 August 2012 Product data sheet
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 2 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
3. Ordering information
4. Functional diagram
Table 1. Ordering information
Type number Package
Tempe rature range Name Description Version
74HC244D-Q100 40 C to +125 C SO20 plastic small outline package; 20 leads;
body width 7.5 mm SOT163-1
74HCT244D-Q100
74HC244PW-Q100 40 C to +125 C TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm SOT360-1
74HCT244PW-Q100
74HC244BQ-Q100 40 C to +125 C DHVQFN20 plastic dual-in-line compatible thermal enhanced
very thin quad flat package; no leads; 20 terminals;
body 2.5 4.5 0.85 mm
SOT764-1
74HCT244BQ-Q100
Fig 1. Functional di agram
mna875
1A3
1A2
1A1
1A0
2
4
6
8
1
1Y0
1Y1
18
16
14
12
1Y2
1Y3
1OE
2A3
2A2
2A1
2A0
17
15
13
11
19
2Y0
2Y1
3
5
7
9
2Y2
2Y3
2OE
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 3 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
5. Pinning information
5.1 Pinning
Fig 2. Logic symbol Fig 3. IEC logic symbol
mna874
8
6
4
2
1A0
1A1
1A2
1A3
1OE
18
16
1Y0
1Y1
1Y2
1Y3
14
12
1
11
13
15
17
2A0
2A1
2A2
2A3
2OE
3
5
2Y0
2Y1
2Y2
2Y3
7
9
19
12
14
2
4
6
8
18
16
1EN
mna873
3
5
11
13
15
17
9
7
19 EN
(1) This is not a supply pin. The substrate is attached to this
pad using conductive die attach material. There is no
electrical or mechanical requirement to solder this pad.
However, if it is soldered, the solder land should remain
floating or be connected to GND.
Fig 4. Pin co nfiguration SO20, TSSOP20 Fig 5. Pin configuration DHVQFN20
+&$4
+&7$4
2( 9&&
$ 2(
< <
$ $
< <
$ $
< <
$ $
< <
*1' $
DDD











DDD
+&$4
+&7$4
7UDQVSDUHQWWRSYLHZ
<
$
<
$
< <
$ $
< <
$ $
< <
$ 2(
*1'
$
2(
9&&











WHUPLQDO
LQGH[DUHD
*1'
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 4 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
5.2 Pin description
6. Functional description
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
[1] For SO20 packages: above 70 C, Ptot derates linearly with 8 mW/K.
For TSSOP20 package: above 60 C, Ptot derates linearly with 5.5 mW/K.
For DHVQFN20 packages: above 60 C, Ptot derates linearly with 4.5 mW/K.
Table 2. Pin description
Symbol Pin Description
1OE, 2OE 1, 19 output enable input (active LOW)
1A0, 1A1, 1A2, 1A3 2, 4, 6, 8 data input
2Y0, 2Y1, 2Y2, 2Y3 3, 5, 7, 9 bus output
GND 10 ground (0 V)
2A0, 2A1, 2A2, 2A3 17, 15, 13, 11 data input
1Y0, 1Y1, 1Y2, 1Y3 18, 16, 14, 12 bus output
VCC 20 supply voltage
Table 3. Function table[1]
Input Output
nOE nAn nYn
LLL
LHH
HXZ
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
VCC supply voltage 0.5 +7 V
IIK input clamping current VI < 0.5 V or VI>V
CC +0.5 V - 20 mA
IOK output clamping current VO<0.5 V or VO>V
CC +0.5V - 20 mA
IOoutput curren t 0.5 V < VO < VCC +0.5V - 35 mA
ICC supply current - 70 mA
IGND ground current 70 - mA
Tstg storage temperature 65 +150 C
Ptot total power dissipation [1] - 500 mW
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 5 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
8. Recommended operating conditions
9. Static characteristics
Table 5. Recommended operating con ditions
Symbol Parameter Conditions Min Typ Max Unit
74HC244-Q100
VCC supply voltage 2.0 5.0 6.0 V
VIinput voltage 0 - VCC V
VOoutput voltage 0 - VCC V
t/V input transition rise and fa ll rate VCC = 2.0 V - - 625 ns/V
VCC = 4.5 V - 1.67 139 ns/V
VCC = 6.0 V - - 83 ns/V
Tamb ambient temperature 40 - +125 C
74HCT244-Q100
VCC supply voltage 4.5 5.0 5.5 V
VIinput voltage 0 - VCC V
VOoutput voltage 0 - VCC V
t/V input transition rise and fa ll rate VCC = 4.5 V - 1.67 139 ns/V
Tamb ambient temperature 40 - +125 C
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max Min Max
74HC244-Q100
VIH HIGH-level
input voltage VCC = 2.0 V 1.5 1.2 - 1.5 - 1.5 - V
VCC = 4.5 V 3.15 2.4 - 3.15 - 3.15 - V
VCC = 6.0 V 4.2 3.2 - 4.2 - 4.2 - V
VIL LOW-level
input voltage VCC = 2.0 V - 0.8 0.5 - 0.5 - 0.5 V
VCC = 4.5 V - 2.1 1.35 - 1.35 - 1.35 V
VCC = 6.0 V - 2.8 1.8 - 1.8 - 1.8 V
VOH HIGH-level
output voltage VI=V
IH or VIL
IO=20 A; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
IO=20 A; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
IO=20 A; VCC = 6.0 V 5.9 6.0 - 5.9 - 5.9 - V
IO=6.0 mA; VCC = 4.5 V 3.98 4.32 - 3.84 - 3.7 - V
IO=7.8 mA; VCC = 6.0 V 5.48 5.81 - 5.34 - 5.2 - V
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 6 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
VOL LOW-level
output voltage VI=V
IH or VIL
IO=20A; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V
IO=20A; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V
IO=20A; VCC = 6.0 V - 0 0.1 - 0.1 - 0.1 V
IO=6.0mA; V
CC = 4.5 V - 0.15 0.26 - 0.33 - 0.4 V
IO=7.8mA; V
CC = 6.0 V - 0.16 0.26 - 0.33 - 0.4 V
IIinput leakage
current VI=V
CC or GND;
VCC =6.0V --0.1 - 1.0 - 1.0 A
IOZ OFF-state
output current per input pin; VI=V
IH or VIL;
VO=V
CC or GND;
other inputs at VCC or GND;
VCC =6.0V; I
O=0A
--0.5 - 5.0 - 10 A
ICC supply current VI=V
CC or GND; IO=0A;
VCC =6.0V - - 8.0 - 80 - 160 A
CIinput
capacitance -3.5- - - - - pF
74HCT244-Q100
VIH HIGH-level
input voltage VCC = 4.5 V to 5.5 V 2.0 1.6 - 2.0 - 2.0 - V
VIL LOW-level
input voltage VCC = 4.5 V to 5.5 V - 1.2 0.8 - 0.8 - 0.8 V
VOH HIGH-level
output voltage VI=V
IH or VIL; VCC =4.5V
IO=20 A 4.4 4.5 - 4.4 - 4.4 - V
IO=6 mA 3.98 4.32 - 3.84 - 3.7 - V
VOL LOW-level
output voltage VI=V
IH or VIL; VCC =4.5V
IO=20A - 0 0.1 - 0.1 - 0.1 V
IO= 6.0 mA - 0.16 0.26 - 0.33 - 0.4 V
IIinput leakage
current VI=V
CC or GND;
VCC =5.5V --0.1 - 1.0 - 1.0 A
IOZ OFF-state
output current per input pin; VI=V
IH or VIL;
VO=V
CC or GND;
other inputs at VCC or GND;
VCC =5.5V; I
O=0A
--0.5 - 5.0 - 10 A
ICC supply current VI=V
CC or GND;
VCC =5.5V; I
O=0A - - 8.0 - 80 - 160 A
ICC additional
supply current per input pin;
VI=V
CC 2.1 V;
other inputs at VCC or GND;
VCC = 4.5 V to 5.5 V;
IO=0A
- 70 252 - 315 - 343 A
CIinput
capacitance -3.5- - - - - pF
Table 6. Static characteristics …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max Min Max
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 7 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
10. Dynamic characteristics
Table 7. Dy namic characteristics
GND = 0 V; for load circuit see Figure 8.
Symbol Parameter Conditions 25 C40 C to +125 CUnit
Min Typ Max Max
(85 C) Max
(125 C)
74HC244-Q100
tpd propagation delay nAn to nYn;
see Figure 6
[1]
VCC = 2.0 V - 30 110 145 165 ns
VCC = 4.5 V - 11 22 28 33 ns
VCC = 5.0 V; CL=15pF - 9 - - - ns
VCC = 6.0 V - 9 19 24 28 ns
ten enable time nOE to nYn; see Figure 7 [2]
VCC = 2.0 V - 36 150 190 225 ns
VCC = 4.5 V - 13 30 38 45 ns
VCC = 6.0 V - 10 26 33 38 ns
tdis disable time nOE to nYn or see Figure 7 [3]
VCC = 2.0 V - 39 150 190 225 ns
VCC = 4.5 V - 14 30 38 45 ns
VCC = 6.0 V - 11 26 33 38 ns
tttransition time see Figure 6 [4]
VCC = 2.0 V - 14 60 75 90 ns
VCC = 4.5 V - 5 12 15 18 ns
VCC = 6.0 V - 4 10 13 15 ns
CPD power dissipation
capacitance per buffer; VI=GNDtoV
CC [5] -35- - -pF
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 8 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
[1] tpd is the same as tPHL and tPLH.
[2] ten is the same as tPZH and tPZL.
[3] tdis is the same as tPHZ and tPLZ.
[4] tt is the same as tTHL and tTLH.
[5] CPD is used to determine the dynamic power dissipation (PD in W):
PD=C
PD VCC2fiN+ (CLVCC2fo) where:
fi= input frequency in MHz;
fo= output frequency in MHz;
CL= output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
(CLVCC2fo) = sum of outputs.
11. Waveforms
74HCT244-Q100
tpd propagation delay nAn to nYn;
see Figure 6
[1]
VCC = 4.5 V - 13 22 28 33 ns
VCC = 5.0 V; CL=15pF - 11 - - - ns
ten enable time nOE to nYn; VCC = 4.5 V; see
Figure 7 [2] -153038 45ns
tdis disable time nOE to nYn; VCC = 4.5 V; see
Figure 7 [3] -152531 38ns
tttransition time VCC = 4.5 V; see Figure 6 [4] - 5 12 15 18 ns
CPD power dissipation
capacitance per buffer;
VI=GNDtoV
CC 1.5 V [5] -35- - -pF
Table 7. Dy namic characteristics …continued
GND = 0 V; for load circuit see Figure 8.
Symbol Parameter Conditions 25 C40 C to +125 CUnit
Min Typ Max Max
(85 C) Max
(125 C)
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 6. Input (nAn) to output (nYn) propagation delays and output transition times
001aae013
tPLH
tPHL
VM
VM
VMVM
nYn output
nAn input
VI
GND
VOH
VOL
tTLH
tTHL
90 %
10 %
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 9 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 7. 3-state enable and disable times
001aae014
tPLZ
tPHZ
outputs
disabled outputs
enabled
VY
VX
outputs
enabled
nYn output
LOW-to-OFF
OFF-to-LOW
nYn output
HIGH-to-OFF
OFF-to-HIGH
nOE input
VI
VOL
VOH
VCC
VM
GND
GND
tPZL
tPZH
VM
VM
Table 8. Measurement points
Type Input Output
VMVMVXVY
74HC244-Q100 0.5 VCC 0.5 VCC 0.1 VCC 0.9 VCC
74HCT244-Q100 1.3 V 1.3 V 0.1 VCC 0.9 VCC
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 10 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Fig 8. Test circuit for measuring switching times
V
M
V
M
t
W
t
W
10 %
90 %
0 V
V
I
V
I
negative
pulse
positive
pulse
0 V
V
M
V
M
90 %
10 %
t
f
t
r
t
r
t
f
001aad983
DUT
V
CC
V
CC
VIVO
RT
RLS1
CL
open
G
Table 9. Test data
Type Input Load S1 position
VItr, tfCLRLtPHL, tPLH tPZH, tPHZ tPZL, tPLZ
74HC244-Q100 VCC 6ns 15pF, 50 pF 1kopen GND VCC
74HCT244-Q100 3 V 6 ns 15 pF, 50 pF 1 kopen GND VCC
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 11 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
12. Package outline
Fig 9. Package outline SOT163-1 (SO20)
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 12 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
Fig 10. Package outline SOT360-1 (TSSOP20)
UNIT A1A2A3bpcD
(1) E(2) (1)
eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 0.15
0.05 0.95
0.80 0.30
0.19 0.2
0.1 6.6
6.4 4.5
4.3 0.65 6.6
6.2 0.4
0.3 0.5
0.2 8
0
o
o
0.13 0.10.21
DIMENSIONS (mm are the original dimensions)
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
0.75
0.50
SOT360-1 MO-153 99-12-27
03-02-19
wM
bp
D
Z
e
0.25
110
20 11
pin 1 index
θ
A
A1
A2
Lp
Q
detail X
L
(A )
3
HE
E
c
vMA
X
A
y
0 2.5 5 mm
scale
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1
A
max.
1.1
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 13 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
Fig 11. Package outline SOT764-1 (DHVQFN20)
terminal 1
index area
0.51
A1Eh
b
UNIT ye
0.2
c
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 4.6
4.4
Dh
3.15
2.85
y1
2.6
2.4 1.15
0.85
e1
3.5
0.30
0.18
0.05
0.00 0.05 0.1
DIMENSIONS (mm are the original dimensions)
SOT764-1 MO-241 - - -- - -
0.5
0.3
L
0.1
v
0.05
w
0 2.5 5 mm
scale
SOT764-1
DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
20 terminals; body 2.5 x 4.5 x 0.85 mm
A(1)
max.
AA1c
detail X
y
y1C
e
L
Eh
Dh
e
e1
b
29
19 12
11
10
1
20
X
D
E
C
BA
terminal 1
index area
AC
CB
vM
wM
E(1)
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
D(1)
02-10-17
03-01-27
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 14 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
13. Abbreviations
14. Revision history
Table 10. Abbreviations
Acronym Description
CMOS Complementary Metal Oxide Semiconductor
DUT Device Under Test
ESD ElectroStatic Discharge
HBM Human Body Model
MM Machine Model
TTL Transi stor-Transistor Logic
MIL Military
Table 11. Revision history
Document ID Release date Data sheet status Change notice Supersedes
74HC_HCT244_Q100 v.1 20120807 Product data sheet - -
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 15 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
15. Legal information
15.1 Data sheet status
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of de vice(s) descr ibed in th is docume nt may have cha nged since this docume nt was publis hed and ma y dif fer in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nexperia.com.
15.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liab ility for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and tit le. A short data sh eet is intended
for quick reference only and shou ld not be rel ied u pon to cont ain det ailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall pre vail.
Product specificatio n — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the Nexperia product is
deemed to off er functions and qualities beyond tho se described in the
Product data sheet.
15.3 Disclaimers
Limited warr a nty and liability — Information in this document is believed to
be accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no
responsibility for the content in this document if provided by an inf ormation
source outside of Nexperia.
In no event shall Nexperia be liable for any indirect, incidental,
punitive, special or consequ ential damages (including - wit hout limitatio n - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of Nexperia.
Right to make changes — Nexperia reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all informa tion supplied prior
to the publication hereof .
Suitability for use in automotive applications — This Nexperia
product has been qualified for use in automotive
applications. Unless ot herwise agreed in writing, the product is not designed,
authorized or warranted to be suitable for use in life support, lif e-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of a Nexperia product can reasonably be expected
to result in perso nal injury, death or severe propert y or environmental
damage. Nexperia and its suppliers accept no liability for
inclusion and/or use of Nexperia products in such equipment or
applications an d ther efo re su ch inclusi on a nd/or use is at the cu stome r's own
risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no
representation or warranty tha t such application s will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and ope ration of their applications
and products using Nexperia products, and Nexperia
accepts no liability for any assistance with applicati ons or customer product
design. It is customer’s sole responsibility to determine whether the Nexperia
product is suitable and fit for the customer’s applications and
products planned, as well as fo r the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
Nexperia does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using Nexperia
products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). Nexperia does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanent ly and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — Nexperia
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nexperia.com/profile/terms, unless otherwise
agreed in a valid written individua l agreement. In case an individual
agreement is concluded only the ter ms and conditions of the respective
agreement shall apply. Nexperia hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of Nexperia products by customer.
Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product develop ment.
Preliminary [short] dat a sheet Qualification This document contains data from the preliminary specification.
Product [short] dat a sheet Production This document contains the product specificatio n.
© Nexperia B.V. 2017. All rights reserved
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 1. — 7 August 2012 16 of 17
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
No offer to sell or license — Nothing in this document may be interpret ed or
construed as an of fer to sell product s that is op en for accept ance or the grant ,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
15.4 Trademarks
Notice: All referenced b rands, produc t names, service names and trademarks
are the property of their respect i ve ow ners.
16. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Nexperia 74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
17. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5 Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
6 Functional description . . . . . . . . . . . . . . . . . . . 4
7 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4
8 Recommended operating conditions. . . . . . . . 5
9 Static characteristics. . . . . . . . . . . . . . . . . . . . . 5
10 Dynamic characteristics . . . . . . . . . . . . . . . . . . 7
11 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
12 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 11
13 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 14
14 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 14
15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
15.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
15.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
16 Contact information. . . . . . . . . . . . . . . . . . . . . 16
17 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
© Nexperia B.V. 2017. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release:
07 August 2012