74ACT11373

OCTAL TRANSPARENT D-TYPE LATCH

WITH 3-STATE OUTPUTS

SCAS015B – JUNE 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 latch 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 latches of the 74ACT11373 are transparent D-type latches. While the latch-enable (LE) input is high,

the Q outputs follow the data (D) inputs. When the enable is taken low, the Q outputs are latched at the levels

that were set up at the D inputs.

A buffered 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-impendance third state and increased drive provide the capability to drive

the bus lines in a bus-organized system without need for interface or pullup components.

OE does not affect the internal operations of the latches. Old data can be retained or new data can be entered

while the outputs are off.

The 74ACT11373 is characterized for operation from –40

°C to 85°C.

FUNCTION TABLE

(each latch)

INPUTS

OUTPUT

OE

LE

D

Q

L

H

H

H

L

HL

L

L

LX

Q0

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.

DB, DW, OR NT PACKAGE

(TOP VIEW)

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

LE