SN74LVC161284

19BIT BUS INTERFACE

SCAS583J − NOVEMBER 1996 − REVISED FEBRUARY 2005

3

POST OFFICE BOX 655303

logic diagram

See Note B

See Note B

See Note A

B1−B8

Y9−Y13

PERI LOGIC OUT

C14−C17

HOST LOGIC IN

VCC CABLE

DIR

HD

A1−A8

A9−A13

PERI LOGIC IN

A14−A17

HOST LOGIC OUT

42

48

1

19

24

30

25

NOTES: A. The PMOS transistor prevents backdriving current from the signal pins to VCC CABLE when VCC CABLE is open or at GND.

B. The PMOS transistors prevent backdriving current from the signal pins to VCC CABLE when VCC CABLE is open or at GND. The

PMOS transistor is turned off when the associated driver is in the low state.