M74HC257B1R Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
fabricante
M74HC257B1R
STMicroelectronics
M74HC257B1R Datasheet PDF : 12 Pages
| |||
IEC LOGIC SYMBOL
HC257
LOGIC DIAGRAM
HC257
M54/M74HC257/258
HC258
HC258
TRUTH TABLE
INPUTS
OE
SELECT
A
H
X
X
L
L
L
L
L
H
L
H
X
L
H
X
X = DON’T CARE Z = HIGH IMPEDANCE
OUTPUTS
B
Y (257)
Y (258)
X
Z
Z
X
L
H
X
H
L
L
L
H
H
H
L
3/12
Share Link: 