STG3157
Datasheet
Low voltage low on-resistance SPDT switch with break-before-make feature
Maturity status link
STG3157
Device summary
Order code
STG3157CTR
Package
SOT323-6L
Packing
Tape and reel
Features
• High speed:
– tPD = 0.3 ns (max) at VCC = 4.5 V
– tPD = 0.8 ns (max) at VCC = 3.0 V
– tPD = 1.2 ns (max) at VCC = 2.3 V
• Ultra low power dissipation:
– ICC = 1 μA (max) at TA = 85 °C
• Low on-resistance; at VIN = 0 V:
– RON = 7 Ω (max TA = 85 °C) at VCC = 4.5 V
– RON = 9 Ω (max TA = 85 °C) at VCC = 3.0 V
• Wide operating voltage range:
– VCC (OPR) = 1.65 V to 5.5 V single supply
• TTL threshold ON control input at VCC = 2.7 to 3.6 V
• Pin and function compatible with 74 series 3157
• Latch-up performance exceeds 150 mA (JESD 17)
Description
The STG3157 is a high-speed CMOS analog SPDT (single-pole double-throw) switch
or 2:1 multiplexer/demultiplexer bus switch manufactured using silicon gate CMOS
technology. It is designed to operate from a 1.65 V to 5.5 V supply, making the device
ideal for portable applications.
The STG3157 features very low on-resistance (< 9 Ω) at VCC = 3.0 V. The IN input is
provided to control the SPDT switch, and is compatible with standard CMOS output.
Switch S1 is ON (connected to common port D) when the IN input is held high, and
OFF (a high impedance state exists between the two ports) when IN is held low.
Switch S2 is ON (connected to common port D) when the IN input is held low and
OFF (a high impedance state exists between the two ports) when IN is held high.
Additional key features are fast switching speed, break-before-make delay time, and
very low power consumption. All inputs and outputs are equipped with protection
circuits to protect against static discharge, giving them immunity from ESD and
transient excess voltage.
DS2882 - Rev 3 - November 2018
For further information contact your local STMicroelectronics sales office.
www.st.com