SN74AUCH16244 Datasheet, PDF (2/13 Pages) Texas Instruments – 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS

SN74AUCH16244
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES391E – MARCH 2002 – REVISED DECEMBER 2002
description/ordering information (continued)
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.
This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
GQL PACKAGE
(TOP VIEW)
123456
A
B
C
D
E
F
G
H
J
K
terminal assignments
1
2
3
4
5
6
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
OE
A
OUTPUT
Y
L
H
H
L
L
L
H
X
Z
2
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