SCES062N − DECEMBER 1995 − REVISED DECEMBER 2003
SN74LVC16245A
16 BIT BUS TRANSCEIVER
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.
GQL OR ZQL PACKAGE
(TOP VIEW)
1
A
B
C
D
E
F
G
H
J
K
2
3
4
5
6
terminal assignments
1
A
B
C
D
E
F
G
H
J
K
1DIR
1B2
1B4
1B6
1B8
2B1
2B3
2B5
2B7
2DIR
2
NC
1B1
1B3
1B5
1B7
2B2
2B4
2B6
2B8
NC
GND
VCC
GND
NC
GND
VCC
GND
NC
3
NC
GND
VCC
GND
4
NC
GND
VCC
GND
5
NC
1A1
1A3
1A5
1A7
2A2
2A4
2A6
2A8
NC
6
1OE
1A2
1A4
1A6
1A8
2A1
2A3
2A5
2A7
2OE
NC − No internal connection
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE
L
L
H
DIR
L
H
X
OPERATION
B data to A bus
A data to B bus
Isolation
logic diagram (positive logic)
1DIR
1
2DIR
48
24
1OE
25
2OE
1A1
47
2A1
36
2
1B1
13
2B1
To Seven Other Channels
Pin numbers shown are for the DGG, DGV, and DL packages.
To Seven Other Channels
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
