5962-87628012A - Integrated Device Technology, Inc.

IDT54/74FCT374/A/C

FAST CMOS OCTAL D REGISTERS (3-STATE) MILITARY AND COMMERCIAL TEMPERATURE RANGES

JUNE 2000

1999 Integrated Device Technology, Inc. DSC-5423/-c

IDT54/74FCT374/A/C

MILITARY AND COMMERCIAL TEMPERATURE RANGES

FAST CMOS OCTAL

D REGISTERS (3-STATE)

DESCRIPTION:

The FCT374 is an 8-bit register built using an advanced dual metal CMOS

technology. These registers consist of eight D-type flip-flops with a buffered

common clock and buffered 3-state output control. When the output enable

(OE) is low, the eight outputs are enabled. When the OE input is high, the

outputs are in the high-impedance state.

Input data meeting the set-up and hold time requirements of the D inputs

is transferred to the O outputs on the low-to-high transition of the clock input.

The FCT374 has non-inverting outputs with respect to the data at the D

inputs.

FUNCTIONAL BLOCK DIAGRAMS

O0O1O2O3O4O5O6O7

CP D

CP CP CP CP CP CP CP

D0D1D2D3D4D5D6D7

FEATURES:

− IDT54/74FCT374 equivalent to FAST™ speed and drive

− IDT54/74FCT374A up to 30% faster than FAST

− IDT54/74FCT374C up to 50% faster than FAST

− IOL = 48mA (commercial) and 32mA (military)

− CMOS power levels (1mW typ. static)

− Edge triggered master/slave, D-type flip-flops

− Buffered common clock and buffered common three-state control

− Military product compliant to MIL-STD-883, Class B

− Meets or exceeds JEDEC Standard 18 specifications

− Available in the following packages:

• Commercial: SOIC

• Military: CERDIP, LCC, CERPACK

MILITARY AND COMMERCIAL TEMPERATURE RANGES

IDT54/74FCT374/A/C

FAST CMOS OCTAL D REGISTERS (3-STATE)

PIN CONFIGURATION

CERDIP/ SOIC/ CERPACK

TOP VIEW LCC

TOP VIEW

10 11 12 13

1920

L20-2 O6

GND

INDEX

D20-1

SO20-2

E20-1

VCC

GND

PIN DESCRIPTION

Pin Names Description

DND Flip-Flop Data Inputs

CP Clock Pulse for the register. Enters data on LOW-to-HIGH

transition.

ON3-State Outputs (true)

ON3- State Outputs (inverted)

OE Active LOW 3-state Output Enable Input

FUNCTION TABLE (1)

Inputs Outputs Internal

Function OE CP DNONQN

Hi-Z H

ZNC

Load Register

↑

NOTE:

1. H

HIGH Vo lta

e Level

LOW Volta

e Level

Don’t Car e

h-Impedance

No Chan

↑

LOW-to-HIGH transition

ABSOLUTE MAXIMUM RATINGS(1)

Symbol Rating Commercial Military Unit

VTERM(2) Terminal Voltage

with Respect to GND –0.5 to +7 –0.5 to +7 V

VTERM(3) Terminal Voltage

with Respect to GND –0.5 to VCC –0.5 to VCC V

TAOperating Temperature 0 to +70 –55 to +125 °C

TBIAS Temperature Under

Bias –55 to +125 –65 to +135 °C

TSTG Storage Temperature –55 to +125 –65 to +150 °C

PTPower Dissipation 0.5 0.5 W

IOUT DC Output Current 120 120 mA

8-link

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM

RATINGS may cause permanent damage to the device. This is a

stress rating only and functional operation of the device at these or

any other c onditions above t hose indicated in the operational s ections

of this specification is not implied. Exposure to absolute maximum

rating conditions for extended periods may affect reliability. No

terminal voltage may exceed VCC by +.5V unless otherwise noted.

2. Input and V CC t erm i nal s only.

3. Outputs and I/O termi nal s only.

CAPACITANCE (TA = +25OC, f = 1.0MHz)

Symbol Parameter(1) Conditions Typ. Max. Unit

CIN Input Capacitance VIN = 0V 6 10 pF

COUT Output

Capacitance VOUT = 0V 8 12 pF

8-link

NOTE:

1. This paramet er i s measured at characterization but not tested.

IDT54/74FCT374/A/C

FAST CMOS OCTAL D REGISTERS (3-STATE) MILITARY AND COMMERCIAL TEMPERATURE RANGES

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified: VLC = 0.2V; VHC = VCC - 0.2V

Commercial: TA = 0°C to +70°C, VCC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10%

Symbol Parameter Test Conditions(1) Min. Typ.(2) Max. Unit

VIH Input HIGH Level Guaranteed Logic HIGH Level 2 — — V

VIL Input LOW Level Guaranteed Logic LOW Level — — 0.8 V

II H Input HIGH Current VCC = Max. VI = VCC ——5µA

= 2.7V — — 5(4)

II L Input LOW Current VI = 0.5V — — –5(4)

VI = GND — — –5

IOZH Off State (High Impedance) VCC = Max. VO = VCC ——10µA

Output Current VO = 2.7V — — 10(4)

IOZL VO = 0.5V — — –10(4)

VO = GND — — –10

VIK Clamp Diode Voltage VCC = Min., IN = –18mA — –0.7 –1.2 V

IOS Short Circuit Current VCC = Max.(3), VO = GND –60 –120 — mA

VOH Output HIGH Voltage VCC = 3V, VIN = VLC or VHC, IOH = –32µA VHC VCC —V

CC = Min. IOH = –300µA VHC VCC —

VIN = VIH or VIL IOH = –12mA MIL. 2.4 4.3 —

IOH = –15mA COM'L. 2.4 4.3 —

VOL Output LOW Voltage VCC = 3V, VIN = VLC or VHC, IOL = 300µA — GND VLC V

VCC = Min. IOL = 300µA — GND VLC(4)

VIN = VIH or VIL IOL = 32mA MIL. — 0.3 0.5

IOL = 48mA COM'L. — 0.3 0.5

NOTES:

1. For conditi ons shown as M ax. or Min. , use appropriate value speci fied under Elec trical Charac teristi cs for t he appl i c abl e device t ype.

2. Typical values are at V CC = 5. 0V, +25°C ambi ent and maximum l oadi ng.

3. Not more than one output should be shorted at one t i m e. Duration of t he short ci rc ui t test should not exceed one second.

4. This paramet er i s guaranteed but not tested.

MILITARY AND COMMERCIAL TEMPERATURE RANGES

IDT54/74FCT374/A/C

FAST CMOS OCTAL D REGISTERS (3-STATE)

NOTES:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at VCC = 5.0V, +25°C ambient.

3. Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.

5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.

6. IC = IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fiNi)

ICC = Quiescent Current

∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)

DH = Duty Cycle for TTL Inputs High

NT = Number of TTL Inputs at DH

ICCD = Dynamic Current Caused by an Output Transition Pair (HLH or LHL)

fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

fi = Input Frequency

Ni = Number of Inputs at fi

All currents are in milliamps and all frequencies are in megahertz.

POWER SUPPLY CHARACTERISTICS

VLC = 0.2V; VHC = VCC - 0.2V

Symbol Parameter Test Conditions(1) Min. Typ.(2) Max. Unit

ICC Quiescent Power Supply Current VCC = Max.

VIN ≥ VHC; VIN ≤ VLC —0.21.5mA

∆I

CC Quiescent Power Supply Current

TTL Inputs HIGH VCC = Max.

VIN = 3.4V(3) —0.52mA

CCD Dynamic Power Supply Current(4) VCC = Max.

Outputs Open

OE = GND

One Input Toggling

50% Duty Cycle

VIN ≥ VHC

VIN ≤ VLC — 0.15 0.25 mA/

MHz

ICTotal Power Supply Current(6) VCC = Max.

Outputs Open

fCP = 10MHz

50% Duty Cycle

VIN ≥ VHC

VIN ≤ VLC

(FCT)

—1.74mA

OE = GND

fi = 5MHz

50% Duty Cycle

One Bit Toggling

VIN = 3.4V

VIN = GND —2.26

CC = Max.

Outputs Open

fCP = 10MHz

50% Duty Cycle

VIN ≥ VHC

VIN ≤ VLC

(FCT)

—47.8

(5)

OE = GND

Eight Bits Toggling

fi = 2.5MHz

50% Duty Cycle

VIN = 3.4V

VIN = GND — 6.2 16.8(5)

IDT54/74FCT374/A/C

FAST CMOS OCTAL D REGISTERS (3-STATE) MILITARY AND COMMERCIAL TEMPERATURE RANGES

NOTES:

1. See test circuit and waveforms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

FCT374 FCT374A FCT374C

Com'l. Mil. Com'l. Mil. Com'l. Mil.

Symbol

Parameter Conditions(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit

tPLH

tPHL Propagation Delay

CP to ONCL = 50pF

RL = 500Ω2 10 2 11 2 6.5 2 7.2 2 5.2 2 6.2 ns

tPZH

tPZL Output Enable Time 1.5 12.5 1.5 14 1.5 6.5 1.5 7.5 1.5 5.5 1.5 6.2 ns

tPHZ

tPLZ Output Disable Time 1.5 8 1.5 8 1.5 5.5 1.5 6.5 1.5 5 1.5 5.7 ns

tSU Set-up Time HIGH

or LOW, DN to CP 2—2—2—2—2—2—ns

HHold Time HIGH

or LOW, DN to CP 1.5 — 1.5 — 1.5 — 1.5 — 1.5 — 1.5 — ns

tWCP Pulse Width

HIGH or LOW 7—7—5—6—5—6—ns

MILITARY AND COMMERCIAL TEMPERATURE RANGES

IDT54/74FCT374/A/C

FAST CMOS OCTAL D REGISTERS (3-STATE)

Pulse

Generator

D.U.T.

VCC

VIN

VOUT

50pF 500Ω

500Ω

7.0V

1.5V

DATA

INPUT

TI MI NG

INPUT

ASYNCHRONOUS CONTROL

PRESET

CLEAR

ETC.

SYNCHRO NOU S CONTRO L

tSU tH

tREM

tSU tH

HIGH-LOW-HIGH

PULSE

LOW-HIGH-LOW

PULSE

1.5V

SAME PHASE

INPUT TR ANS ITION

1.5V

VOH

tPLH

OUTPUT

OPPOSITE PHASE

INPUT TR ANS ITION

1.5V

tPLH tPHL

tPHL

VOL

CONTROL

INPUT

1.5V

3.5V

OUTPUT

NORMALLY

LOW

OUTPUT

NORMALLY

HIGH

SWITCH

CLOSED

SWITCH

OPEN

VOL

0.3V

tPLZ

tPZL

tPZH tPHZ

3.5V

1.5V

ENABLE DISABLE

VOH

PRESET

CLEAR

CLOCK ENABLE

ETC.

Octal link

TEST CIRCUITS AND WAVEFORMS

PROPAGATION DELAY

TEST CIRCUITS FOR ALL OUTPUTS

ENABLE AND DISABLE TIMES

SET-UP, HOLD, AND RELEASE TIMES PULSE WIDTH

SWITCH POSITION

Test Switch

Open Drain

Disable Low Closed

Enable Low

All Other Tests Open

8-link

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.

RT = Termination resistance: should be equal to ZOUT of the Pulse

Generator.

NOTES:

1. Diagram shown for input Control Enable-LOW and input Control

Disable-HIGH.

2. Pul se Generator f or All Pulses: Rate ≤ 1.0MHz; Zo ≤ 50Ω; tF ≤ 2.5ns;

tR ≤ 2.5ns.

IDT54/74FCT374/A/C

FAST CMOS OCTAL D REGISTERS (3-STATE) MILITARY AND COMMERCIAL TEMPERATURE RANGES

CORPORATE HEADQUARTERS for SALES:

2975 Stender Way 800-345-7015 or 408-727-6116

Santa Clara, CA 95054 fax: 408-492-8674

www.idt.com*

*To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2.

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

ORDERING INFORMATION

IDT XX

Tem p. Range XXXX

Device Type XX

Package X

Process

SO Com mercial Options

Small Outline IC (SO20-2)

F a s t CMOS Octal D Re g is ter (3 - S tate )

74 – 55°C to +125°C

– 0°C to +70°C

M ilit a ry Op tio ns

CER DIP (D20-1)

CER PAC K (E20-1)

Leadless Chip Carrier (L20-2)

Blank

BCommercial

MIL-STD-883, Class B

FCT

374

374A

374C