MC1455P1 - Motorola / Freescale Semiconductor



SEMICONDUCTOR TECHNICAL DATA

1REV 3

 Motorola, Inc. 1996

9/95

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The MC74LCX245 is a high performance, non–inverting octal

transceiver operating from a 2.7 to 3.6V supply. High impedance TTL

compatible inputs significantly reduce current loading to input drivers

while TTL compatible outputs offer improved switching noise

performance. A VI specification of 5.5V allows MC74LCX245 inputs to be

safely driven from 5V devices. The MC74LCX245 is suitable for memory

address driving and all TTL level bus oriented transceiver applications.

Current drive capability is 24mA at both A and B ports. The

Transmit/Receive (T/R) input determines the direction of data flow

through the bi–directional transceiver. Transmit (active–HIGH) enables

data from A ports to B ports; Receive (active–LOW) enables data from B

to A ports. The Output Enable input, when HIGH, disables both A and B

ports by placing them in a HIGH Z condition.

•Designed for 2.7 to 3.6V VCC Operation

•5V Tolerant — Interface Capability With 5V TTL Logic

•Supports Live Insertion and Withdrawal

•IOFF Specification Guarantees High Impedance When VCC = 0V

•LVTTL Compatible

•LVCMOS Compatible

•24mA Balanced Output Sink and Source Capability

•Near Zero Static Supply Current in All Three Logic States (10µA)

Substantially Reduces System Power Requirements

•Latchup Performance Exceeds 500mA

•ESD Performance: Human Body Model >2000V; Machine Model >200V

Pinout: 20–Lead (Top View)

1920 18 17 16 15 14

21 34567

OE B0 B1 B2 B3 B4 B5 B6 B7

T/R A0 A1 A2 A3 A4 A5 A6 A7 GND

DW SUFFIX

PLASTIC SOIC

CASE 751D–04

DT SUFFIX

PLASTIC TSSOP

CASE 948E–02

M SUFFIX

PLASTIC SOIC EIAJ

CASE 967–01

SD SUFFIX

PLASTIC SSOP

CASE 940C–03



LOW–VOLTAGE CMOS

OCTAL TRANSCEIVER

PIN NAMES

Function

Output Enable Input

T ransmit/Receive Input

Side A 3–State Inputs or 3–State

Outputs

Side B 3–State Inputs or 3–State

Outputs

Pins

T/R

A0–A7

B0–B7

MC74LCX245

MOTOROLA LCX DATA

BR1339 — REV 3

OE 19

T/R 1

LOGIC DIAGRAM

INPUTS

OPERATING MODE

OE T/R

OPERATING

MODE

Non–Inverting

L L B Data to A Bus

L H A Data to B Bus

H X Z

H = High V oltage Level; L = Low Voltage Level; Z = High Impedance State; X = High or Low Voltage Level

and T ransitions are Acceptable; For ICC reasons, Do Not Float Inputs

MC74LCX245

LCX DATA

BR1339 — REV 3 3 MOTOROLA

ABSOLUTE MAXIMUM RATINGS*

Symbol Parameter Value Condition Unit

VCC DC Supply Voltage –0.5 to +7.0 V

VIDC Input Voltage –0.5 ≤ VI ≤ +7.0 V

VODC Output Voltage –0.5 ≤ VO ≤ +7.0 Output in 3–State V

–0.5 ≤ VO ≤ VCC + 0.5 Note 1. V

IIK DC Input Diode Current –50 VI < GND mA

IOK DC Output Diode Current –50 VO < GND mA

+50 VO > VCC mA

IODC Output Source/Sink Current ±50 mA

ICC DC Supply Current Per Supply Pin ±100 mA

IGND DC Ground Current Per Ground Pin ±100 mA

TSTG Storage Temperature Range –65 to +150 °C

* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions

beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is not implied.

1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Typ Max Unit

VCC Supply Voltage Operating

Data Retention Only 2.0

1.5 3.3

3.3 3.6

3.6 V

VIInput Voltage 0 5.5 V

VOOutput Voltage (HIGH or LOW State)

(3–State) 0

0VCC

5.5 V

IOH HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA

IOL LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA

IOH HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA

IOL LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA

TAOperating Free–Air Temperature –40 +85 °C

∆t/∆VInput Transition Rise or Fall Rate, VIN from 0.8V to 2.0V,

VCC = 3.0V 0 10 ns/V

DC ELECTRICAL CHARACTERISTICS

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

VIH HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V

VIL LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V

VOH HIGH Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOH = –100µA VCC – 0.2 V

VCC = 2.7V ; IOH = –12mA 2.2

VCC = 3.0V ; IOH = –18mA 2.4

VCC = 3.0V ; IOH = –24mA 2.2

VOL LOW Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOL = 100µA 0.2 V

VCC = 2.7V ; IOL= 12mA 0.4

VCC = 3.0V ; IOL = 16mA 0.4

VCC = 3.0V ; IOL = 24mA 0.55

2. These values of VI are used to test DC electrical characteristics only.

MC74LCX245

MOTOROLA LCX DATA

BR1339 — REV 3

DC ELECTRICAL CHARACTERISTICS (continued)

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

IIInput Leakage Current 2.7V ≤ VCC ≤ 3.6V ; 0V ≤ VI ≤ 5.5V ±5.0 µA

IOZ 3–State Output Current 2.7 ≤ VCC ≤ 3.6V ; 0V ≤ VO ≤ 5.5V;

VI = VIH or V IL ±5.0 µA

IOFF Power–Of f Leakage Current VCC = 0V ; VI or VO = 5.5V 10 µA

ICC Quiescent Supply Current 2.7 ≤ VCC ≤ 3.6V ; VI = GND or VCC 10 µA

2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI or VO ≤ 5.5V ±10 µA

∆ICC Increase in ICC per Input 2.7 ≤ VCC ≤ 3.6V ; VIH = VCC – 0.6V 500 µA

AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)

Limits

TA = –40°C to +85°C

VCC = 3.0V to 3.6V VCC = 2.7V

Symbol Parameter Waveform Min Max Max Unit

tPLH

tPHL Propagation Delay

Input to Output 1 1.5

1.5 7.0

7.0 8.0

8.0 ns

tPZH

tPZL Output Enable T ime to

High and Low Level 2 1.5

1.5 8.5

8.5 9.5

9.5 ns

tPHZ

tPLZ Output Disable T ime From

High and Low Level 2 1.5

1.5 7.5

7.5 8.5

8.5 ns

tOSHL

tOSLH Output–to–Output Skew

(Note 3.) 1.0

1.0 ns

3. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.

The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (tOSHL) or LOW–to–HIGH (tOSLH); parameter

guaranteed by design.

DYNAMIC SWITCHING CHARACTERISTICS

TA = +25°C

Symbol Characteristic Condition Min Typ Max Unit

VOLP Dynamic LOW Peak Voltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V

VOLV Dynamic LOW Valley V oltage (Note 4.) VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V 0.8 V

4. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is

measured in the LOW state.

CAPACITIVE CHARACTERISTICS

Symbol Parameter Condition Typical Unit

CIN Input Capacitance VCC = 3.3V, VI = 0V or VCC 7pF

CI/O Input/Output Capacitance VCC = 3.3V, VI = 0V or VCC 8pF

CPD Power Dissipation Capacitance 10MHz, VCC = 3.3V, VI = 0V or VCC 25 pF

MC74LCX245

LCX DATA

BR1339 — REV 3 5 MOTOROLA

WAVEFORM 1 – PROPAGATION DELAYS

tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns

2.7V

VOH

VOL

An, Bn

Bn, An

tPHL

tPLH

WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES

tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns

2.7V

≈

OE, T/R

An, Bn

tPZH

≈

3.0V

tPHZ

tPZL tPLZ

An, Bn

1.5V

1.5V1.5V

1.5V 1.5V

Figure 1. AC Waveforms

1.5V

VCC

VOH – 0.3V

VOL + 0.3V

GND

1.5V

OPEN

PULSE

GENERATOR

DUT

VCC

GND

TEST SWITCH

tPLH, tPHL Open

tPZL, tPLZ 6V

Open Collector/Drain tPLH and tPHL 6V

tPZH, tPHZ GND

CL = 50pF or equivalent (Includes jig and probe capacitance)

RL = R1 = 500Ω or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

Figure 2. Test Circuit

MC74LCX245

MOTOROLA LCX DATA

BR1339 — REV 3

OUTLINE DIMENSIONS

DW SUFFIX

PLASTIC SOIC PACKAGE

CASE 751D–04

ISSUE E

M SUFFIX

PLASTIC SOIC EIAJ PACKAGE

CASE 967–01

ISSUE O

MIN MINMAX MAX

MILLIMETERS INCHES

DIM

0.510

0.299

0.104

0.019

0.035

0.012

0.009

0.415

0.029

0.499

0.292

0.093

0.014

0.020

0.010

0.004

0.395

0.010

12.95

7.60

2.65

0.49

0.90

0.32

0.25

10.55

0.75

12.65

7.40

2.35

0.35

0.50

0.25

0.10

10.05

0.25

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE

MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.150

(0.006) PER SIDE.

5. DIMENSION D DOES NOT INCLUDE

DAMBAR PROTRUSION. ALLOWABLE

DAMBAR PROTRUSION SHALL BE 0.13

(0.005) TOTAL IN EXCESS OF D DIMENSION

AT MAXIMUM MATERIAL CONDITION.

1.27 BSC 0.050 BSC

–A

–

–B

–P 10 PL

110

1120

–T

–

D 20 PL

SEATING

PLANE

R X 45°

0.010 (0.25) B

M M

0.010 (0.25) T A B

MS S

G 18 PL

DIM MIN MAX MIN MAX

INCHES

--- 2.05 --- 0.081

MILLIMETERS

0.05 0.20 0.002 0.008

0.35 0.50 0.014 0.020

0.18 0.27 0.007 0.011

12.35 12.80 0.486 0.504

5.10 5.45 0.201 0.215

1.27 BSC 0.050 BSC

7.40 8.20 0.291 0.323

0.50 0.85 0.020 0.033

1.10 1.50 0.043 0.059

0.70 0.90 0.028 0.035

--- 0.81 --- 0.032

NOTES:

1 DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2 CONTROLLING DIMENSION: MILLIMETER.

3 DIMENSIONS D AND E DO NOT INCLUDE MOLD

FLASH OR PROTRUSIONS AND ARE MEASURED

AT THE PARTING LINE. MOLD FLASH OR

PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)

PER SIDE.

4 TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

5 THE LEAD WIDTH DIMENSION (b) DOES NOT

INCLUDE DAMBAR PROTRUSION. ALLOWABLE

DAMBAR PROTRUSION SHALL BE 0.08 (0.003)

TOTAL IN EXCESS OF THE LEAD WIDTH

DIMENSION AT MAXIMUM MATERIAL CONDITION.

DAMBAR CANNOT BE LOCATED ON THE LOWER

RADIUS OR THE FOOT. MINIMUM SPACE

BETWEEN PROTRUSIONS AND ADJACENT LEAD

TO BE 0.46 ( 0.018).

20 11

bA1

LEQ1

VIEW P

DETAIL P

0.13 (0.005) M0.10 (0.004)

MC74LCX245

LCX DATA

BR1339 — REV 3 7 MOTOROLA

OUTLINE DIMENSIONS

SD SUFFIX

PLASTIC SSOP PACKAGE

CASE 940C–03

ISSUE B

DT SUFFIX

PLASTIC TSSOP PACKAGE

CASE 948E–02

ISSUE A

DIM

AMIN MAX MIN MAX

INCHES

6.60 0.260

MILLIMETERS

B4.30 4.50 0.169 0.177

C1.20 0.047

D0.05 0.15 0.002 0.006

F0.50 0.75 0.020 0.030

G0.65 BSC 0.026 BSC

H0.27 0.37 0.011 0.015

J0.09 0.20 0.004 0.008

J1 0.09 0.16 0.004 0.006

K0.19 0.30 0.007 0.012

K1 0.19 0.25 0.007 0.010

L6.40 BSC 0.252 BSC

M0 8 0 8

____

NOTES:

6 DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

7 CONTROLLING DIMENSION: MILLIMETER.

8 DIMENSION A DOES NOT INCLUDE MOLD FLASH,

PROTRUSIONS OR GATE BURRS. MOLD FLASH

OR GATE BURRS SHALL NOT EXCEED 0.15

(0.006) PER SIDE.

9 DIMENSION B DOES NOT INCLUDE INTERLEAD

FLASH OR PROTRUSION. INTERLEAD FLASH OR

PROTRUSION SHALL NOT EXCEED 0.25 (0.010)

PER SIDE.

10 DIMENSION K DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN

EXCESS OF THE K DIMENSION AT MAXIMUM

MATERIAL CONDITION.

11 TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

12 DIMENSION A AND B ARE TO BE DETERMINED

AT DATUM PLANE –W–.

ÍÍÍÍ

110

1120

PIN 1

IDENT

–T–

0.100 (0.004)

DGH

SECTION N–N

JJ1

–W–

SEATING

PLANE

–V–

–U–

0.10 (0.004) V S

20X REFK

L/2

U0.15 (0.006) T

DETAIL E

0.25 (0.010)

DETAIL E

6.40 0.252

––– –––

U0.15 (0.006) T

20 11

101

K20X REF

0.12 (0.005) V S

L/2

PIN 1

IDENT

0.20 (0.008) T

–V– –U–

0.076 (0.003)

–T–

SEATING

PLANE

DETAIL E

0.25 (0.010)

ÇÇÇ

ÉÉÉ

JJ1

SECTION N–N

DIM

AMIN MAX MIN MAX

INCHES

7.07 7.33 0.278 0.288

MILLIMETERS

B5.20 5.38 0.205 0.212

C1.73 1.99 0.068 0.078

D0.05 0.21 0.002 0.008

F0.63 0.95 0.024 0.037

G0.65 BSC 0.026 BSC

H0.59 0.75 0.023 0.030

J0.09 0.20 0.003 0.008

J1 0.09 0.16 0.003 0.006

K0.25 0.38 0.010 0.015

K1 0.25 0.33 0.010 0.013

____

NOTES:

13 DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

14 CONTROLLING DIMENSION: MILLIMETER.

15 DIMENSION A DOES NOT INCLUDE MOLD FLASH,

PROTRUSIONS OR GATE BURRS. MOLD FLASH

OR GATE BURRS SHALL NOT EXCEED 0.15

(0.006) PER SIDE.

16 DIMENSION B DOES NOT INCLUDE INTERLEAD

FLASH OR PROTRUSION. INTERLEAD FLASH OR

PROTRUSION SHALL NOT EXCEED 0.15 (0.006)

PER SIDE.

17 DIMENSION K DOES NOT INCLUDE DAMBAR

PROTRUSION/INTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN

EXCESS OF K DIMENSION AT MAXIMUM

MATERIAL CONDITION. DAMBAR INTRUSION

SHALL NOT REDUCE DIMENSION K BY MORE

THAN 0.07 (0.002) AT LEAST MATERIAL

CONDITION.

18 TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

19 DIMENSION A AND B ARE TO BE DETERMINED

AT DATUM PLANE –W–.

L7.65 7.90 0.301 0.311

M0 8 0 8

DETAIL E

–W–

MC74LCX245

MOTOROLA LCX DATA

BR1339 — REV 3

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding

the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and

specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola

data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”

must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of

others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other

applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury

or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola

and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees

arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that

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Opportunity/Af firmative Action Employer.

How to reach us:

USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,

P.O. Box 5405; Denver , Colorado 80217. 1–800–441–2447 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315

MFAX: RMF AX0@email.sps.mot.com – T OUCHTONE 602–244–6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,

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MC74LCX245/D

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