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HD74VCR2245A Datasheet

  • HD74VCR2245A

  • 13頁

  • ETC

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HD74LVCR2245A
Octal Bidirectional Transceivers with 3鈥搒tate Outputs
ADE-205-235B (Z)
3rd. Edition
January 2001
Description
The HD74LVCR2245A has eight buffers with three state outputs in a 20 pin package. When (T /
R)
is high,
data flows from the A inputs to the B outputs, and when (T /
R)
is low, data flows from the B inputs to the
A outputs. A and B bus are separated by making enable input (OE) high level.
All outputs, which are designed to sink up to 12 mA, include equivalent 26
鈩?/div>
resistors to reduce overshoot
and undreshoot.
Low voltage and high speed operation is suitable at battery drive product (note type personal computer) and
low power consumption extends the life of a battery for long time operation.
Features
鈥?/div>
V
CC
= 1.65 to 5.5 V
鈥?/div>
All inputs V
IH
(Max) = 5.5 V (@V
CC
= 0 to 5.5 V)
鈥?/div>
All inputs / outputs V
I / O
(Max) = 5.5 V (@V
CC
= 0 V or output off state)
鈥?/div>
Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25擄C)
鈥?/div>
Typical V
OH
undershoot > 2.0 V (@V
CC
= 3.3 V, Ta = 25擄C)
鈥?/div>
High output current 鹵12 mA (@V
CC
= 3.0 to 5.5 V)
鈥?/div>
All outputs have equivalent 26
鈩?/div>
series resistors, so no external resistors are required

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