74ACT158
QUAD 2 CHANNEL MULTIPLEXER (INV.)
PRELIMINARY DATA
May 1997
n HIGH SPEED: t
PD
= 4 ns (TYP.) at V
CC
=5V
n LOW POWER DISSIPATION:
I
CC
=8µA (MAX.) at T
A
=25
o
C
n COMPATIBLE WITH TTL OUTPUTS
V
IH
=2V(MIN),V
IL
= 0.8V (MAX)
n 50Ω TRANSMISSION LINE DRIVING
CAPABILITY
n SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|=IOL =24mA(MIN)
n BALANCED PROPAGATION DELAYS:
t
PLH
≅ t
PHL
n OPERATING VOLTAGE RANGE:
VCC (OPR) = 4.5V to 5.5V
n PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 158
n IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The ACT158 is an high-speed CMOS QUAD
2-CHANNEL MULTIPLEXER fabricated with
sub-micron silicon gate and double-layer metal
wiring C
2
MOS technology. It is ideal for low
power applications maintaining high speed
operation similar to equivalent Bipolar Schottky
TTL.
It consists of four 2-input digital multiplexers with
common select and strobe inputs. It is an
inverting multiplexer. When the STROBE input is
held High selection of data is inhibit and all the
outputs become high. The SELECT decoding
determines whether the A or B inputs get routed
to their corresponding Y outputs.
The device is designed to interface directly High
Speed CMOS systems with TTL, NMOS and
CMOS output voltage levels.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
M
(Micro Package)
B
(Plastic Package)
ORDER CODES :
74ACT158B 74ACT158M
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