SGS Thomson Microelectronics 74ACT374 Datasheet

WITH 3 STATE OUTPUT NON INVERTING

■ HIGH SPEED:

=260MHz (TYP.) at VCC=5V

f

MAX

■ LOWPOWERDISSIPATION:

=8µA (MAX.) at TA=25oC

I

CC

■ COMPATIBLEWITHTTLOUTPUTS

V

=2V(MIN),VIL= 0.8V (MAX)

IH

■ 50Ω TRANSMISSION LINE DRIVING

CAPABILITY

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

|=IOL=24mA (MIN)

OH

■ BALANCEDPROPAGATIONDELAY S:

≅ t

t

PLH

PHL

■ OPERATINGVOLTAGERAN GE:

V

(OPR)= 4.5V to 5.5V

CC

■ PIN AND FUNCTION COMPATIBLE WITH

74SERIES374

■ IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The ACT374 is an advanced high-speed CMOS
OCTAL D-TYPE FLIP FLOP with 3 STATE
OUTPUT NON INVERTING fabricated with
sub-micron silicon gate and double-layer metal
wiring C
power applications mantaining high speed
operation similar to equivalent Bipolar Schottky
TTL.

These 8 bit D-Type flip-flops are controlled by a
clockinput (CK) andan output enableinput (OE).

2

MOS technology. It is ideal for low

74ACT374

OCTAL D-TYPE FLIP FLOP

B

(Plastic Package)

(Micro Package)

ORDER CODES :

74ACT374B 74ACT374M

On the positive transition of the clock, the Q
outputs will be set to logic state that were setup
at the D inputs.

While the (OE) input is low, the 8 outputs will be
in a normal logic state (high or low logic level)
and while high level the outputs will be in a high
impedancestate.

The output control does not affect the internal
operation of flip flop; that is, the old data can be
retained or the new data can be entered even
while the outputsare off.

The device is designed to interface directly High
Speed CMOS system with TTL and NMOS
components.

All inputs and outputs are equipped with
protectioncircuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.

M

PINCONNECTION AND IEC LOGIC SYMBOLS

April 1997

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74ACT374

INPUTAND OUTPUTEQUIVALENT CIRCUIT PIN DESCRIPTION

PI N No SYM B O L NAME AND FUNCT I ON

1 OE 3 State Output Enable

2, 5, 6, 9,

12, 15, 16,

19

3, 4, 7, 8,

13, 14, 17,

18
11 CLOCK Clock Input (LOW to

10 GND Ground (0V)
20 V

TRUTH TABLE

INPUTS OUTPUTS

OE CK D Q

HXXZ
L X NO CHANGE
LLL
LHH

X:DON’T CARE
Z:HIGHIMPEDANCE

Q0 to Q7 3 State Outputs

D0 to D7 Data Inputs

CC

Input (Active LOW)

HIGH, edge triggered)

Positive Supply Voltage

LOGICDIAGRAMS

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74ACT374

ABSOLUTE MAXIMUM RATINGS

Symb o l Parame t er Val u e Uni t

V

V

V

I

I

OK

I

orI

I

CC

T

T

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnot implied.

RECOMMENDED OPERATINGCONDITIONS

Symbol Parameter Valu e Unit

V

V

V

T

dt/dv Input Rise and Fall Time V

1) VINfrom0.8V to2.0V

Supply Voltage -0.5 to +7 V

CC

DC Input Voltage -0.5 to VCC+ 0.5 V

I

DC Output Voltage -0.5 to VCC+ 0.5 V

O

DC Input Diode Current ± 20 mA

IK

DC Output Diode Current ± 20 mA
DC Output Current ± 50 mA

O

DC VCCor Ground Current ± 400 mA

GND

Storage Temperature -65 to +150

stg

Lead Temperature (10 sec) 300

L

Supply Voltage 4.5 to 5.5 V

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature: -40to +85

op

= 4.5 to 5.5V (note 1) 8 ns/V

CC

CC
CC

o

C

o

C

V
V

o

C

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