1 Features
• Latch-up immune
• Dual supply range: ±4.5 V to ±22 V
• Single supply range: 4.5 V to 44 V
• Low On-Resistance: 1.2 Ω
• Low charge injection: −10 pC
• –40°C to +125°C operating temperature
• Integrated Pull-Down resistor on logic pins
• 1.8 V logic compatible
• Fail-safe logic
• Rail to rail operation
• Bidirectional signal path
• Break-before-make switching

2 Applications
• Optical networking
• Optical test equipment
• Wired networking
• Factory automation and industrial controls
• Programmable logic controllers (PLC)
• Semiconductor test
• Ultrasound scanners
• Patient monitoring and diagnostics
• Remote radio units
• Data acquisition systems

3 Description
The TMUX720x is a complementary metal-oxide
semiconductor (CMOS) switch with Latch-Up
immunity in a single channel, 1:1 (SPST)
configuration. The device works with a single supply
(4.5 V to 44 V), dual supplies (±4.5 V to ±22 V), or
asymmetric supplies (such as VDD = 12 V, VSS = –5
V). The TMUX720x supports bidirectional analog and
digital signals on the source (S) and drain (D) pin
ranging from VSS to VDD.
The TMUX720x can be enabled or disabled by
controlling the SEL pin. When disabled, both signal
path switches are off. All logic control inputs support
logic levels from 1.8 V to VDD, which is compatible for
both TTL and CMOS logic when operating in the valid
supply voltage range. Fail-Safe Logic circuitry allows
voltages on the control pins to be applied before
the supply pin, protecting the device from potential
damage.
The TMUX72xx family provides Latch-Up immunity,
preventing undesirable high current events between
parasitic structures within the device typically caused
by overvoltage events. A Latch-Up condition typically
continues until the power supply rails are turned off
and can lead to device failure. The Latch-Up immunity
feature allows the TMUX72xx family of switches and
multiplexers to be used in harsh environments.