SN74HSTL16918

9-BIT TO 18-BIT HSTL-TO-LVTTL MEMORY ADDRESS LATCH

SCES096C – APRIL 1997 – REVISED JANUARY 1999

1

POST OFFICE BOX 655303

Widebus

™ Family

Outputs Meet Level III Specifications

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

JESD 17

Small-Outline Package

description

This 9-bit to 18-bit D-type latch is designed for

accept HSTL levels and the Q outputs provide

LVTTL levels.

The SN74HSTL16918 is particularly suitable for

driving an address bus to two banks of memory.

Each bank of nine outputs is controlled with its

own latch-enable (LE) input.

Each of the nine D inputs is tied to the inputs of two

D-type latches that provide true data (Q) at the

outputs. While LE is low, the Q outputs of the

corresponding nine latches follow the D inputs.

When LE is taken high, the Q outputs are latched

at the levels set up at the D inputs.

The

SN74HSTL16918

is

characterized

for

operation from 0

°C to 70°C.

FUNCTION TABLE

INPUTS

OUTPUT

LE

D

Q

L

H

H

L

LL

H

X

Q0†

† Output level before the

indicated steady-state input

conditions were established

Copyright

© 1999, 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.

Widebus is a trademark of Texas Instruments Incorporated.

DGG PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

2Q1

1Q1

GND

D1

D2

D3

D4

GND

1LE

GND

GND

2LE

GND

D5

D6

D7

D8

D9

GND

2Q9

1Q9

1Q2

2Q2

GND

1Q3

2Q3

1Q4

2Q4

GND

1Q5

2Q5

GND

1Q6

2Q6

1Q7

2Q7

GND

1Q8

2Q8