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HD74HC245 Datasheet

  • HD74HC245

  • Octal Bus Transceivers (with 3-state outputs)

  • 9頁

  • HITACHI

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HD74HC245
Octal Bus Transceivers (with 3-state outputs)
Description
Each device has an active low enable input
G
and a direction control input, DIR. When DIR is high, data
flows from the A inputs to the B outputs. When DIR is low, data flows from the B inputs to the A outputs.
The HD74HC245 transfers true data from one bus to the other. This device does not have schmitt trigger
inputs.
Features
鈥?/div>
High Speed Operation: t
pd
= 8 ns typ (C
L
= 50 pF)
鈥?/div>
High Output Current: Fanout of 15 LSTTL Loads
鈥?/div>
Wide Operating Voltage: V
CC
= 2 to 6 V
鈥?/div>
Low Input Current: 1 碌A(chǔ) max
鈥?/div>
Low Quiescent Supply Current: I
CC
(static) = 4 碌A(chǔ) max (Ta = 25擄C)
Function Table
Enable G
L
L
H
H :
L :
X :
high level
low level
irrelevant
Direction Control DIR
L
H
X
Operation
B data to A bus
A data to B bus
Isolation

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