TMUX7236 44 V, Low-RON, 2:1 (SPDT), 2-Channel Precision Switch with Latch-Up

Immunity and 1.8 V Logic

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: 2 Ω

• High current support: 330 mA (maximum) (WQFN)

• –40°C to +125°C operating temperature

• 1.8 V logic compatible

• Integrated pull-down resistor on logic pins

• Fail-safe logic

• Rail-to-rail operation

• Bidirectional operation

2 Applications

• Gas meters

• Flow transmitters

• Factory automation and industrial controls

• Programmable logic controllers (PLC)

• Analog input modules

• Semiconductor test

• Data acquisition systems

• Ultrasound scanners

• Optical networking

• Optical test equipment

• Remote radio units

• Wired networking

• Patient monitoring and diagnostics

3 Description

The TMUX7236 is a complementary metal-oxide

semiconductor (CMOS) switch with latch-up immunity

in a dual channel, 2:1 configuration. The device works

well with dual supplies (±5 V to ±22 V), a single

supply (5 V to 44 V), or asymmetric supplies (such

bidirectional analog and digital signals on the source

All logic control inputs support logic levels from

logic compatibility 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.

Device Information(1)

DEVICE NUMBER

PACKAGE

BODY SIZE (NOM)

TMUX7236

WQFN (16)

4.00 mm × 4.00 mm

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

S1A

S1B

D1

Log ic

Decoder

S2A

S2B

D2

SEL1

SEL2

EN

Block Diagram

TMUX7236

SCDS417 – MARCH 2022

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change

without notice.