SN74LVCH16244A

16BIT BUFFER/DRIVER

WITH 3STATE OUTPUTS

SCAS313N − NOVEMBER 1993 − REVISED AUGUST 2003

2

POST OFFICE BOX 655303

description/ordering information (continued)

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator

in a mixed 3.3-V/5-V system environment.

preventing damaging current backflow through the device when it is powered down.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors

with the bus-hold circuitry is not recommended.

terminal assignments

123456

A

1OE

NC

NC

NC

NC

2OE

B

1Y2

1Y1

GND

GND

1A1

1A2

C

1Y4

1Y3

VCC

VCC

1A3

1A4

D

2Y2

2Y1

GND

GND

2A1

2A2

E

2Y4

2Y3

2A3

2A4

F

3Y1

3Y2

3A2

3A1

G

3Y3

3Y4

GND

GND

3A4

3A3

H

4Y1

4Y2

VCC

VCC

4A2

4A1

J

4Y3

4Y4

GND

GND

4A4

4A3

K

4OE

NC

NC

NC

NC

3OE

NC − No internal connection

FUNCTION TABLE

(each 4-bit buffer)

INPUTS

OUTPUT

OE

A

OUTPUT

Y

L

H

H

L

LL

H

X

Z

GQL OR ZQL PACKAGE

(TOP VIEW)

A

B

C

D

E

F

G

H

J

K

1

2345

6