1/11July 2001
■ HIGH SPEED :
t
PD
= 17 ns (TYP.) at V
CC
= 6V
■ LOW POWER DISSIPATION:
I
CC
=4µA(MAX.) at T
A
=25°C
■ HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 4mA (MIN)
■ BALANCED PROPAGATION DELAYS:
t
PLH
≅ t
PHL
■ WIDE OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 251
DESCRIPTION
The M74HC251 is an high speed CMOS
8-CHANNEL MULTIPLEXER (3-STATE)
fabricated with silicon gate C
2
MOS technology.
This Multiplexer features both true (Y) and
complement (W) outputs as well as STROBE
input. When the STROBE is high, both outputs are
in the high impedance state. When enabled,
address information on the data select inputs
determines which data input is routed to Y and W.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M74HC251
8-CHANNEL MULTIPLEXER (3-STATE)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE TUBE T & R
DIP M74HC251B1R
SOP M74HC251M1R M74HC251RM13TR
TSSOP M74HC251TTR
TSSOPDIP SOP
