1 Features
1• Rail to rail operation
• Bidirectional signal path
• 1.8 V Logic compatible
• Fail-safe logic
• Low on-resistance: 3 Ω
• Wide supply range: 1.08 V to 5.5 V
• -40°C to +125°C Operating temperature
• Low supply current: 4 nA
• Transition time: 14 ns
• Break-before-make switching
• ESD protection HBM: 2000 V

2 Applications
• Analog and Digital Switching
• I2C and SPI bus Multiplexing
• Remote Radio Units
• Barcode scanner
• Motor drives
• Building automation
• Analog input module
• Power delivery
• Video surveillance
• Electronic point of sale
• Appliances
• Consumer audio

3 Description
The TMUX1219 is a general purpose complementary
metal-oxide semiconductor (CMOS) single-pole
double-throw (SPDT) switch. The TMUX1219
switches between two source inputs based on the
state of the SEL pin. Wide operating supply of 1.08 V
to 5.5 V allows for use in a broad array of
applications from personal electronics to building
automation. 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 4 nA enables use in portable applications.
All logic inputs have 1.8 V 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.