74LCX157 Datasheet, PDF (1/17 Pages) Fairchild Semiconductor – Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs

74LCX157
Low voltage CMOS Quad 2 channel multiplexer
with 5V tolerant inputs
Features
■ 5V tolerant inputs
■ High speed:
– t_PD = 6.0ns (Max) at V_CC = 3V
■ Power down protection on inputs and outputs
■ Symmetrical output impedance:
– |I_OH| = I_OL = 24mA (Min) at V_CC = 3V
■ PCI bus levels guaranteed at 24mA
■ Balanced propagation delays:
– t_PLH ≅ t_PHL
■ Operating voltage range:
– V_CC (Opr) = 2.0V to 3.6V
■ Pin and function compatible with
74 series 157
■ Latch-up performance exceeds
500mA (JESD 17)
■ ESD performance:
– HBM > 2000V
(MIL STD 883 method 3015); MM > 200V
SO-16
TSSOP16
Description
The 74LCX157 is a low voltage CMOS Quad 2
channel multiplexer fabricated with sub-micron
silicon gate and double-layer metal wiring C²MOS
technology. It is ideal for low power and high
speed 3.3V applications; it can be interfaced to
5V signal environment for inputs.
It consists of four 2-input digital multiplexer with
common select and strobe inputs. It is a non-
inverting multiplexer. When the STROBE input is
held high selection of data is inhibited and all the
outputs become low. The SELECT decoding
determines whether the A or B inputs get routed
to their corresponding Y outputs.
It has same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power
consumption.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
Order codes
Part number
74LCX157MTR
74LCX157TTR
February 2007
Package
SO-16
TSSOP16
Rev 6
Packaging
Tape and reel
Tape and reel
1/17
www.st.com
17