STG3157_10 Datasheet, PDF (1/18 Pages) STMicroelectronics – Low voltage low on-resistance SPDT switch with break-before-make feature

STG3157
Low voltage low on-resistance SPDT switch
with break-before-make feature
Features
■ High speed:
– t_PD = 0.3 ns (max) at V_CC = 4.5 V
– t_PD = 0.8 ns (max) at V_CC = 3.0 V
– t_PD = 1.2 ns (max) at V_CC = 2.3 V
■ Ultra low power dissipation:
– I_CC = 1 µA (max) at T_A = 85 °C
■ Low on-resistance; at V_IN = 0 V:
– R_ON = 7 Ω (max T_A = 85 °C) at V_CC = 4.5 V
– R_ON = 9 Ω (max T_A = 85 °C) at V_CC = 3.0 V
■ Wide operating voltage range:
– V_CC (OPR) = 1.65 V to 5.5 V single supply
■ TTL threshold ON control input at
V_CC = 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 C²MOS
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 V_CC = 3.0 V. The IN input is provided to
control the SPDT switch, and is compatible with
standard CMOS output. Switch S1 is ON
SOT323-6L
(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.
Table 1. Device summary
Order code
STG3157CTR
Package
SOT323-6L
Packing
Tape and reel
April 2010
Doc ID 9007 Rev 2
1/18
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