1 Features
1• Wide supply range: 1.5 V to 5.5 V
• Low on-capacitance: 7.5 pF
• Low on-resistance: 2 Ω
• High bandwidth: 2 GHz
• -40°C to +125°C operating temperature
• 1.8 V 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 3.6 V Signals
– Pinout compatible to SN74CBTLV3257

2 Applications
• Flash memory sharing
• JTAG multiplexing
• SPI multiplexing
• eMMC multiplexing
• Servers
• Data center switches & routers
• Wireless infrastructure
• PC & notebooks
• Building automation
• Grid infrastructure
• ePOS
• Appliances

3 Description
The TMUX1574 is a complementary metal-oxide
semiconductor (CMOS) switch. The TMUX1574
offers 2:1 SPDT switch configuration with 4-channels.
Wide operating supply of 1.5 V to 5.5 V 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 (SxA, SxB) and drain (Dx) pins
and can pass signals above supply up to VDD x 2,
with a maximum input/output voltage of 5.5 V.
Powered-off Protection up to 3.6 V on the signal path
of the TMUX1574 provides isolation when the supply
voltage is removed (VDD = 0 V). 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
control inputs have 1.8 V logic compatible thresholds,
ensuring both TTL and CMOS logic compatibility
when operating in the valid supply voltage range.
Integrated pull down resistor on the logic pins
removes external components to reduce system size
and cost.