1 Features
• AEC-Q100 Qualified for Automotive Applications
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature
– Device HBM Classification Level H1C
– Device CDM Classification Level C3
• Rail to rail operation
• Bidirectional signal path
• 1.8V Logic compatible
• Fail-safe logic
• Low on-resistance: 3Ω
• Wide supply range: 1.08V to 5.5V
• -40°C to +125°C Operating temperature
• Low supply current: 4nA
• Transition time: 14ns
• Break-before-make switching
• ESD protection HBM: 2000V

2 Applications
• Analog and Digital Switching
• I2C and SPI bus Multiplexing
• Advanced driver assistance systems (ADAS)
• Body electronics and lighting
• Infotainment and cluster
• Zone architecture
• Body control modules
• Battery management systems
• Telematics
• Automotive head unit

3 Description
The TMUX1219-Q1 is a general purpose
complementary metal-oxide semiconductor (CMOS)
single-pole double-throw (SPDT) switch. The
TMUX1219-Q1 switches between two source inputs
based on the state of the SEL pin. Wide operating
supply of 1.08V to 5.5V allows for use in a wide
array of automotive applications. The device supports
bidirectional analog and digital signals on the source
Sx) and drain (D) pins ranging from GND to VDD.
A low supply current of 4nA enables use in portable
applications.
All logic inputs have 1.8V logic compatible thresholds,
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.