參數(shù)資料
型號: M74HC242B1R
廠商: 意法半導(dǎo)體
元件分類: 通用總線功能
英文描述: QUAD BUS TRANSCEIVER 3-STATE
中文描述: 四總線收發(fā)器三態(tài)
文件頁數(shù): 2/11頁
文件大小: 257K
代理商: M74HC242B1R
CHIP CARRIER
TRUTH TABLE
INPUTS
GAB
H
L
H
L
FUNCTION
A BUS
OUTPUT
INPUT
HIGH IMPEDANCE
HIGH IMPEDANCE
OUTPUTS
HC242 HC243
A = B
B = A
Z
Z
GBA
H
L
L
H
B BUS
INPUT
OUTPUT
A = B
B = A
Z
Z
PIN DESCRIPTION
PIN No
1
SYMBOL
GAB
NAME AND FUNCTION
Output Enable Input
(active LOW)
Not connected
Data Inputs/Outputs
Data Inputs/Outputs
Output Enable Input
Ground (0V)
Positive Supply Voltage
2, 12
3, 4, 5, 6
11, 10, 9, 8
13
7
14
NC
1A to 4A
1B to 4B
GBA
GND
V
CC
IEC LOGIC SYMBOLS
HC242
HC243
M54/M74HC242/243
2/11
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