1 Features
• AEC-Q100 qualified for automotive applications
– Device temperature grade 1: –40°C to 125°C
ambient operating temperature
• Dual supply range: ±3 V to ±12 V
• Single supply range: 3 V to 24 V
• –55°C to +125°C operating temperature
• Break-before-make switching
• ESD protection HBM: 2000 V
• TMUX405x – pin compatible with:
– Industry standard 4051 and 4052 muxes

2 Applications
• Analog multiplexing and demultiplexing
• Digital multiplexing and demultiplexing
• Battery Management Systems (BMS)
• HVAC control module
• Automotive head unit
• Telematics
• On-board (OBC) and wireless charging

3 Description
The TMUX405x-Q1 devices are general purpose
complementary metal-oxide semiconductor (CMOS)
multiplexers (MUX). The TMUX4051-Q1 is an 8:1,
1-channel multiplexer, the TMUX4052-Q1 is a 4:1, 2-
channel multiplexer. The devices work with a single
supply (3 V to 24 V), dual supplies (±3 V to ±12 V),
or asymmetric supplies (such as VDD = 12 V, VSS
= –5 V). The wide supply voltage range allows the
TMUX405x-Q1 devices to be used in a broad array of
applications from factory automation to appliances.
The TMUX405x-Q1 devices support bidirectional
analog and digital signals on the source (Sx) and
drain (Dx) pins ranging from VSS to VDD. All logic
inputs have 1.8 V logic compatible thresholds,
ensuring both TTL and CMOS logic compatibility
when operating with a valid supply voltage.