74AC157_01 Datasheet, PDF (1/10 Pages) STMicroelectronics – QUAD 2 CHANNEL MULTIPLEXER

74AC157
QUAD 2 CHANNEL MULTIPLEXER
s HIGH SPEED: t_PD = 4ns (TYP.) at V_CC = 5V
s LOW POWER DISSIPATION:
I_CC = 4µA(MAX.) at T_A=25°C
s HIGH NOISE IMMUNITY:
V_NIH = V_NIL = 28 % V_CC (MIN.)
s 50Ω TRANSMISSION LINE DRIVING
CAPABILITY
s SYMMETRICAL OUTPUT IMPEDANCE:
|I_OH| = I_OL = 24mA (MIN)
s BALANCED PROPAGATION DELAYS:
t_PLH ≅ t_PHL
s OPERATING VOLTAGE RANGE:
V_CC (OPR) = 2V to 6V
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 157
s IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74AC157 is an advanced high-speed CMOS
QUAD 2-CHANNEL MULTIPLEXER fabricated
with sub-micron silicon gate and double-layer
metal wiring C²MOS tecnology.
It consists of four 2-input digital multiplexer with
common SELECT and STROBE inputs. It is a
non-inverting multiplexer. When the STROBE
DIP
SOP
TSSOP
ORDER CODES
PACKAGE
DIP
SOP
TSSOP
TUBE
74AC157B
74AC157M
T&R
74AC157MTR
74AC157TTR
input is held high selection of data is inhibit and all
the outputs become low. The SELECT decoding
determines whether the A or B inputs get routed to
their corresponding Y outputs.
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
April 2001
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