1 Features
• Wide Supply Range: 1.5V to 5.5V
• Low On-Capacitance: 3.3pF
• Low On-Resistance: 2Ω
• High Bandwidth: 3GHz
• -40°C to +125°C Operating Temperature
• 1.8V Logic Compatible
• Supports Input Voltage Beyond Supply
• Integrated Pull Down Resistor on Logic Pins
• Bidirectional Signal Path
• Fail-Safe Logic
• Powered-off protection up to 3.6V
– Pinout compatible to SN74CBTLV3126
– Pinout compatible (logic variant) of
SN74CBTLV3125

2 Applications
• Servers
• Wired Networking
• Wireless Infrastructure
• Data Center Switches & Routers
• PC/Notebooks
• Building Automation
• ePOS
• Motor Drives
• Appliances
• Battery-Powered Equipment
• JTAG Isolation
• SPI Isolation

3 Description
The TMUX1511 is a complementary metal-oxide
semiconductor (CMOS) switch. The TMUX1511 offers
1:1 SPST switch configuration with 4 independently
controlled channels. Wide operating supply of
1.5V to 5.5V allows for use in a broad array
of applications from servers and communication
equipment to industrial applications. The device
supports bidirectional analog and digital signals on the
source (Sx) and drain (Dx) pins and can pass signals
above supply up to VDD x 2, with a maximum input/
output voltage of 5.5V.
Up to 3.6V on the signal path of the TMUX1511
provides isolation when the supply voltage is removed
(VDD = 0V). Without this protection feature, switches
can back-power the supply rail through an internal
ESD diode and cause potential damage to the
system.
Fail-Safe Logic circuitry allows voltages on the logic
control pins to be applied before the supply pin,
protecting the device from potential damage. All logic
control inputs have 1.8V logic compatible thresholds,
ensuring both TTL and CMOS logic compatibility
when operating in the valid supply voltage range.