SN74ALVC164245 Datasheet, PDF (2/20 Pages) Texas Instruments – 16-BIT 3.3-V TO 5-V LEVEL SHIFTING TRANSCEIVER WITH 3-STATE OUTPUTS

SN74ALVC164245
16-BIT 2.5-V TO 3.3-V/3.3-V TO 5-V LEVEL-SHIFTING TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS416P – MARCH 1994 – REVISED NOVEMBER 2005
www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port
outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data
from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the
A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic
HIGH or LOW level applied to prevent excess I_CC and I_CCZ.
TERMINAL ASSIGNMENTS⁽¹⁾
GQL OR ZQL PACKAGE
(56-Ball GQL/ZQL Package)
(TOP VIEW)
1
2
3
4
5
6
123456
A 1DIR
NC
NC
NC
NC
1OE
A
B 1B2
1B1
GND GND 1A1
1A2
B
C
C 1B4
1B3
V_CCB
V_CCA
1A3
1A4
D
D 1B6
1B5
GND GND 1A5
1A6
E
E 1B8
1B7
1A7
1A8
F
F 2B1
2B2
2A2
2A1
G
H
G 2B3
2B4
GND GND 2A4
2A3
J
H 2B5
2B6
V_CCB
V_CCA
2A6
2A5
K
J 2B7
2B8
GND GND 2A8
2A7
K 2DIR
NC
NC
NC
NC
2OE
abc
abc
GRD OR ZRD PACKAGE
(TOP VIEW)
123456
A
B
C
D
E
F
G
H
J
(1) NC – No internal connection
TERMINAL ASSIGNMENTS⁽¹⁾
(54-Ball GRD/ZRD Package)
1
2
3
4
5
6
A
1B1
NC 1DIR 1OE
NC
1A1
B
1B3 1B2
NC
NC
1A2 1A3
C
1B5
1B4
V_CCB
V_CCA
1A4
1A5
D
1B7 1B6 GND GND 1A6 1A7
E
2B1 1B8 GND GND 1A8 2A1
F
2B3 2B2 GND GND 2A2 2A3
G
2B5
2B4
V_CCB
V_CCA
2A4
2A5
H
2B7 2B6
NC
NC
2A6 2A7
J
2B8
NC 2DIR 2OE
NC
2A8
(1) NC – No internal connection
xxxxx
xxxxx
xxxxx
xxxxx
FUNCTION TABLE⁽¹⁾
(EACH 8-BIT SECTION)
CONTROL INPUTS
OE
DIR
L
L
L
H
H
X
OUTPUT CIRCUITS
A PORT B PORT
Enabled
Hi-Z
Hi-Z
Enabled
Hi-Z
Hi-Z
OPERATION
B data to A bus
A data to B bus
Isolation
(1) Input circuits of the data I/Os always are active.
2