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74ACTQ16245(1999) View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
74ACTQ16245
(Rev.:1999)
Fairchild
Fairchild Semiconductor Fairchild
74ACTQ16245 Datasheet PDF : 7 Pages
1 2 3 4 5 6 7
Functional Description
The ACTQ16245 contains sixteen non-inverting bidirec-
tional buffers with 3-STATE outputs. The device is byte
controlled with each byte functioning identically, but inde-
pendent of the other. The control pins can be shorted
together to obtain full 16-bit operation. The following
description applies to each byte. When the T/R input is
HIGH, then Bus A data is transmitted to Bus B. When the
T/R input is LOW, Bus B data is transmitted to Bus A. The
3-STATE outputs are controlled by an Output Enable (OEn)
input for each byte. When OEn is LOW, the outputs are in
2-state mode. When OEn is HIGH, the outputs are in the
high impedance mode, but this does not interfere with
entering new data into the inputs.
Logic Diagram
Truth Tables
Inputs
OE1
T/R1
L
L
L
H
H
X
Outputs
Bus B0B7 Data to Bus A0A7
Bus A0A7 Data to Bus B0B7
HIGH-Z State on A0A7, B0B7
Inputs
OE2
T/R2
Outputs
L
L
L
H
H
X
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Bus B8B15 Data to Bus A8A15
Bus A8A15 Data to Bus B8B15
HIGH-Z State on A8A15, B8B15
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