SCAS664E 鈭?MARCH 2001 鈭?REVISED SEPTEMBER 2003
SN74LVC162244A
16 BIT BUFFER/DRIVER
WITH 3 STATE OUTPUTS
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.
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.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
GQL OR ZQL PACKAGE
(TOP VIEW)
1
A
B
C
D
E
F
G
H
J
K
2
3
4
5
6
A
B
C
D
E
F
G
H
J
K
terminal assignments
1
1OE
1Y2
1Y4
2Y2
2Y4
3Y1
3Y3
4Y1
4Y3
4OE
2
NC
1Y1
1Y3
2Y1
2Y3
3Y2
3Y4
4Y2
4Y4
NC
GND
VCC
GND
NC
GND
VCC
GND
NC
3
NC
GND
VCC
GND
4
NC
GND
VCC
GND
5
NC
1A1
1A3
2A1
2A3
3A2
3A4
4A2
4A4
NC
6
2OE
1A2
1A4
2A2
2A4
3A1
3A3
4A1
4A3
3OE
NC 鈭?No internal connection
FUNCTION TABLE
(each 4-bit buffer)
INPUTS
OE
L
L
H
A
H
L
X
OUTPUT
Y
H
L
Z
2
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
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