74ACT11374

OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOP

WITH 3-STATE OUTPUTS

SCAS217A – JULY 1987 – REVISED APRIL 1996

1

POST OFFICE BOX 655303

PCB Layout

Minimize High-Speed Switching Noise

CMOS) 1-

mm Process

125

°C

Small-Outline (DW) and Shrink

Small-Outline (DB) Packages, and Standard

Plastic 300-mil DIPs (NT)

description

This 8-bit flip-flop features 3-state outputs designed specifically for driving highly-capacitive or relatively

low-impedance loads. It is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus

drivers, and working registers.

The eight flip-flops of the 74ACT11374 are edge-triggered D-type flip-flops. On the positive transition of the clock

(CLK) input, the Q outputs are set to the logic levels set up at the data (D) inputs.

An output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high or low

logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus

lines significantly. The high-impedance third state provides the capability to drive bus lines in a bus-organized

system without need for interface or pullup components.

OE does not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered

while the outputs are in the high-impedance state.

The 74ACT11374 is characterized for operation from –40

°C to 85°C.

FUNCTION TABLE

(each flip-flop)

INPUTS

OUTPUT

OE

CLK

D

Q

L

↑

H

H

L

↑

LL

L

LX

Q0

L

HX

Q0

L

↓

XQ0

H

X

X

Z

Copyright

© 1996, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

EPIC is a trademark of Texas Instruments Incorporated.

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

1Q

2Q

3Q

4Q

GND

GND

GND

GND

5Q

6Q

7Q

8Q

OE

1D

2D

3D

4D

5D

6D

7D

8D

CLK

DB, DW, OR NT PACKAGE

(TOP VIEW)