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74ACT16245MTD Datasheet(Hoja de datos) 2 Page - Fairchild Semiconductor

No. de Pieza. 74ACT16245MTD
Descripción  16-Bit Transceiver with 3-STATE Outputs
Descarga  6 Pages
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Fabricante  FAIRCHILD [Fairchild Semiconductor]
Página de inicio  http://www.fairchildsemi.com
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Functional Description
The ACT16245 contains sixteen non-inverting bidirectional
buffers with 3-STATE outputs. The device is byte controlled
with each byte functioning identically, but independent 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.
Truth Tables
H
HIGH Voltage Level
L
LOW Voltage Level
X
Immaterial
Z
High Impedance
Logic Diagram
Inputs
Outputs
OE1
T/R1
L
L
Bus B0–B7 Data to Bus A0–A7
L
H
Bus A0–A7 Data to Bus B0–B7
H
X
HIGH-Z State on A0–A7, B0–B7
Inputs
Outputs
OE2
T/R2
LL
Bus B8–B15 Data to Bus A8–A15
LH
Bus A8–A15 Data to Bus B8–B15
H
X
HIGH-Z State on A8–A15, B8–B15




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