BiMOS II

LATCHED DRIVERS

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

TRUTH TABLE

STROBE

CLEAR

ENABLE

t-1

t

0

100

X

OFF

1

100

X

ON

X

X1X

X

OFF

X

X

X

1

X

OFF

X

0

0

0

ON

ON

X

0

0

0

OFF

OFF

X = irrelevant.

t-1 = previous output state.

t = present output state.

OUTPUT

CLEAR

STROBE

OUTPUT

ENABLE

INN

OUTN

A

C

BC

B

G

D

E

F

A

C

B

G

E

TIMING CONDITIONS

A. Minimum Data Active Time Before Strobe Enabled

(Data Set-Up Time) .......................................................... 50 ns

B. Minimum Data Active Time After Strobe Disabled

(Data Hold Time) .............................................................. 50 ns

C. Minimum Strobe Pulse Width ..................................................125 ns

D. Typical Time Between Strobe Activation and

Output On to Off Transition ............................................ 500 ns

E. Minimum Time Between Strobe Activation and

Output Off to On Transition ............................................ 500 ns

F. Minimum Clear Pulse Width ....................................................300 ns

G. Minimum Data Pulse Width .....................................................225 ns

Information present at an input is transferred to its latch when the

STROBE is high. A high CLEAR input will set all latches to the output

OFF condition regardless of the data or STROBE input levels. A high

OUTPUT ENABLE will set all outputs to the OFF condition, regardless

of any other input conditions. When the OUTPUT ENABLE is low, the

outputs depend on the state of their respective latches.

Dwg. No. A-10,895A

UCN5801A

221

22

SUPPLY

CLEAR

1

OUTPUT

ENABLE

STROBE

3

4

5

6

7

16

17

18

19

20

7

8

9

10

11

12

13

14

15

GROUND

Dwg. PP-015

COMMON

223

24

SUPPLY

CLEAR

1

OUTPUT

ENABLE

STROBE

3

4

5

6

7

21

22

7

8

9

10

11

GROUND

Dwg. PP-015-1

COMMON

NO

CONNECTION

NO

CONNECTION

NC

NC

12

13

18

19

20

14

15

16

17

UCN5801LW