TMUX722x 44 V, Low-RON, 1:1 (SPST), 2-Channel Precision Switches 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: 2.1 Ω

• –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

• Optical Networking

• Optical Test Equipment

• HVAC Controller

• Ultrasound Scanners

• Active Oscilloscope Probes

• Factory Automation and Industrial Controls

• Programmable Logic Controllers (PLC)

• Analog Input Modules

• Semiconductor Test

• Patient Monitoring and Diagnostics

• Wired Networking

• Data Acquisition Systems

S1

S2

D1

D2

VDD

VSS

SW

SW

SEL1

SEL2

TMUX7221

(SELx = Logic 1)

S1

S2

D1

D2

VDD

VSS

SW

SW

SEL1

SEL2

TMUX7222

(SELx = Logic 1)

Block Diagram

3 Description

The TMUX722x are complementary metal-oxide

semiconductor

(CMOS)

switches

with

latch-up

immunity in a dual channel, 1:1 (SPST) configuration.

These devices work 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

TMUX722x supports bidirectional analog and digital

signals on the source (Sx) and drain (D) pins ranging

from VSS to VDD.

The TMUX722x can be enabled or disabled by

controlling the SEL pins turning on signal path 1

(S1 to D1) and/or signal path 2 (S2 to D2). All

logic control inputs support logic levels from 1.8 V to

VDD, ensuring both TTL and CMOS 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. For more information,

see Section 8.3.5.

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.

Package Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMUX7221

TMUX7222

DGS (VSSOP, 10)

3.00 mm × 3.00 mm

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

TMUX7221, TMUX7222

SCDS444 – FEBRUARY 2023

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.