參數(shù)資料
型號: HD74HC243
廠商: Hitachi,Ltd.
英文描述: Octal Buffers And Line Drivers With 3-State Outputs 20-CDIP -55 to 125
中文描述: 四??偩€收發(fā)器(3態(tài)輸出),四。總線收發(fā)器(帶noninverted三態(tài)輸出)
文件頁數(shù): 1/10頁
文件大?。?/td> 60K
代理商: HD74HC243
HD74HC242/HD74HC243
Quad. Bus Transceivers (with 3-state outputs)
Quad. Bus Transceivers (with noninverted 3-state outputs)
Description
The HD74HC242 is an inverting buffer and the HD74HC243 is a noninverting buffer. Each device has one
active high enable (GBA), and one active low enable (
G
AB). GBA enables the A output and
G
AB enables
the B outputs. The device does not have schmitt trigger inputs.
Features
High Speed Operation: t
pd
= 10 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
Function Table
HD74HC242
HC74HC243
Control inputs
G
AB
Data Port Status
Data Port Status
GBA
A
O
B
A
B
H
H
I
O
I
L
H
Z
Z
Z
Z
H
L
Z
Z
O
Z
Z
L
I
O :
O
:
Z
L
I
I
O
:
Input
Output
Inverting Output
Hight Impedance
:
相關(guān)PDF資料
PDF描述
HD74HC244 Octal Buffers And Line Drivers With 3-State Outputs 20-CDIP -55 to 125
HD74HC245 Octal Buffers And Line Drivers With 3-State Outputs 20-LCCC -55 to 125
HD74HC251 Octal Buffers And Line Drivers With 3-State Outputs 20-CDIP -55 to 125
HD74HC253 Octal Buffers And Line Drivers With 3-State Outputs 20-CFP -55 to 125
HD74HC257 Octal Buffers And Line Drivers With 3-State Outputs 20-CDIP -55 to 125
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