SN74ALS845

8-BIT BUS-INTERFACE D-TYPE LATCH

WITH 3-STATE OUTPUTS

SDAS233A – DECEMBER 1983 – REVISED JANUARY 1995

4

POST OFFICE BOX 655303

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

R2 = 500

TA = MIN to MAX†

UNIT

MIN

MAX

tPLH

D

Q

2

13

ns

tPHL

D

Q

4

18

ns

tPLH

LE

Q

5

21

ns

tPHL

LE

Q

8

26

ns

tPLH

PRE

Q

6

22

ns

tPHL

CLR

Q

6

24

ns

tPZH

OE

Q

3

16

ns

tPZL

OE

Q

5

18

ns

tPHZ

OE

Q

1

11

ns

tPLZ

OE

Q

2

12

ns

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.