UM3157 Datasheet, PDF (1/8 Pages) Union Semiconductor, Inc. – Low-Voltage SPDT Analog Switch

UM3157
Low-Voltage SPDT Analog Switch
UM3157 SC70-6/SC88/SOT363
General Description
The UM3157 is an advanced CMOS analog switch fabricated with silicon gate CMOS
technology. It achieves very low propagation delay and R_DS(ON) resistances while maintaining
CMOS low power dissipation. These make it ideal for portable and battery power applications.
The switch conducts signals within power rails equally well in both directions when on, and
blocks up to the power supply level when off. Break-before-make is guaranteed.
The select pin has over-voltage protection that allows voltages above V_CC, up to 6.5V to be
present on the pin without damage or disruption of operation of the part, regardless of the
operating voltage.
The UM3157 can maintain low power consumption for rail-to-rail signaling as long as the control
signal input is held at a level that is greater than V_IH minimum and less than V_IL maximum by
improving the control circuitry input buffer. so the part can be used in mixed voltage rail
environments, especially services the mobile handset applications very well allowing for the direct
interface with baseband processor general purpose I/Os, and it is no longer necessary to have the
control input equal to V_CC to maintain low power consumption
Applications
Features
z Sample-and-Hold Circuits
z Battery powered Equipment
z Audio and Video Signal Routing
z Communication Circuits
z Control Inputs Are 5V Tolerant
z Low Charge Injection
z Excellent ON-State Resistance Matching
z Low Total Harmonic Distortion (THD)
z 1.65V to 5.5V Single-Supply Operation
z ESD Performance:
Human Body Model＞2KV
Machine Model＞200V
z SC70-6/SC88/SOT363 Package
z Pb-Free Package
Pin Configurations
Top View
M: Monthly Code
UM3157
SC70-6/SC88/SOT363
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http://www.union-ic.com Rev.03 Dec.2008
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