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HD74HCT243RP Datasheet

  • HD74HCT243RP

  • BUS TRANSCEIVER|SINGLE|4-BIT|HCT-CMOS|SOP|14PIN|PLASTIC

  • 8頁

  • ETC

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HD74HCT242/HD74HCT243
Quad. Bus Transceivers (with 3-state outputs)
Description
The HD74HCT242 is an inverting buffer and the HD74HCT243 is a noninverting buffer. Each device has
one active high enable (GBA), and one active low enable (GAB). GBA enables the A outputs and
GAB
enables the B outputs.
The device does not have schmitt trigger inputs.
Features
鈥?/div>
LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility
鈥?/div>
High Speed Operation: t
pd
(A to Y) = 9.5 ns typ (C
L
= 50 pF)
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: V
CC
= 4.5 to 5.5 V
Low Input Current: 1 碌A(chǔ) max
Low Quiescent Supply Current: I
CC
(static) = 4 碌A(chǔ) max (Ta = 25擄C)
Function Table
HD74HCT242
Control Inputs
G
AB
H
L
H
L
I
O
O
Z
:
:
:
:
G
BA
H
H
L
L
Input
Output
Inverting Output
High Impedance
Data Port Status
A
O
Z
Z
I
B
I
Z
Z
O
HD74HCT243
Data Port Status
A
O
Z
Z
I
B
I
Z
Z
O

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