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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 6,000

On Order: 0
Factory Stock:Factory Stock: 0
Factory Lead Time: N/A
Minimum Order: 3,000
Multiple Of: 3,000
Quantity Web Price
3,000 $0.215
6,000 $0.174
9,000+ $0.172


Attributes Table
No of Channels 1
Circuitry SPDT
ON Resistance 1.15Ω
Supply Voltage 2.7V to 5.5V
Features and Applications

FSA4157 is a high performance Single Pole/Double Throw (SPDT) analog switches. Both devices feature ultra low RON of 1.15 W maximum at 4.5 V VCC and operates over a wide VCC range of 1.65 V to 5.5 V for FSA4157, and 2.7 V to 5.5 V for FSA4157A. The device is fabricated with sub-micron CMOS technology to achieve fast switching speeds and is designed for break-before-make operation. The select input is TTL level compatible.

The FSA4157A features very low quiescent current even when the control voltage is lower than the VCC supply. This feature services the mobile handset applications very well allowing for the direct interface with baseband processor general purpose I/Os.


  • FSA4157A Features Lower ICC when the S Input is Lower Than VCC
  • Maximum 1.15 W On Resistance (RON) at 4.5 V VCC
  • 0.3 W max RON Flatness at 4.5 V VCC
  • Space-Saving 6-lead Pb-Free MicroPak™ and SC70 Packages
  • Broad VCC Operating Range:
  • FSA4157: 1.65 V to 5.5 V
  • FSA4157A: 2.7 V to 5.5 V
  • Fast Turn-On and Turn-Off Time
  • Break-Before-Make Enable Circuitry
  • Over-Voltage Tolerant TTL Compatible Control Circuitry