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HD74AC245 Datasheet

  • HD74AC245

  • Octal Bidirectional Transceiver with 3-State Input/Output

  • 9頁

  • HITACHI

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HD74AC245/HD74ACT245
Octal Bidirectional Transceiver with 3-State Input/Output
Description
The HD74AC245/HD74ACT245 contains eight non-inverting bidirectional buffers with 3-state outputs and
is intended for bus-oriented applications. Current sinking capability is 24 mA at both the A and B ports.
The Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional
transceiver. Transmit (active-High) enables data from A ports to B ports; Receive (active-Low) enables
data from B ports to A ports. The Output Enable input, when High, disables, both A and B ports by placing
them in a High Z condition.
Features
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Noninverting Buffers
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Bidirectional Data Path
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A and B Outputs Source/Sink 24 mA
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HD74ACT245 has TTL-Compatible Inputs
Pin Names
OE
T/R
A
0
to A
7
B
0
to B
7
Output Enable Input
Transmit/Receive Input
Side A 3-State Inputs or 3-State Outputs
Side B 3-State Inputs or 3-State Outputs

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