1 Features

1• No Overshoot When Switching Inputs

• 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: 7 nA

• Break-before-make Switching

• ESD Protection HBM: 2000 V

2 Applications

• Analog and Digital Switching

• I2C and SPI Bus Multiplexing

• Remote Radio Units (RRU)

• Active Antenna System mMIMO (AAS)

• Rack Server

• Network Interface Card (NIC)

• Barcode Scanner

• Building Automation

• Analog Input Module

• Motor Drives

• Video Surveillance

• Electronic Point of Sale

• Desktop PC

• Appliances

3 Description

The TMUX1237 is a general purpose 2:1, single-pole

double-throw (SPDT), switch that supports a wide

operating range of 1.08 V to 5.5 V. The device

supports bidirectional analog and digital signals on

the source (Sx) and drain (D) pins ranging from GND

to VDD. The state of the select pin (SEL) controls

which of the two sources pins are connected to the

drain pin. Additionally, the TMUX1237 has a low

supply current of 7 nA which enables the device to be

used in a host of handheld or low power applications.

The TMUX1237 improves system reliability by

eliminating overshoot that might occur in a system

due to switching between two voltage levels on the

source (Sx) pins. In addition, the TMUX1237 also

maintains fast switching times, enabling it to improve

system performance for a wide range of applications

from communications equipment to building

automation.

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.