TMUX1309APWR

Overview

The TMUX1309APWR is a general-purpose CMOS multiplexer featuring two independent 4:1 channels in a 16-pin TSSOP package. It supports bidirectional analog and digital signals with a supply voltage range of 1.62V to 5.5V. Key electrical parameters include an on-resistance maximum of 195 Ohms at 5V, off-isolation of -90dB at 1MHz, and crosstalk of -90dB at 1MHz. The device operates within a temperature range of -40°C to +125°C, drawing a maximum supply current of 1µA.

Feature Summary

• Internal injection current control eliminates the need for external protection diodes or resistors.
• No internal ESD diode path to VDD prevents back-powering and unintended power rail loading.
• Fail-safe logic allows control pin voltages to be applied before the supply voltage.
• Break-before-make switching prevents signal overlap during channel transitions.

Applications

• Analog and digital multiplexing and demultiplexing
• Diagnostics and monitoring systems
• Data center switches
• Remote radio units (RRU)
• Electricity meters

Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the TSSOP-16 package configuration required for your PCB layout. Confirm that the component meets RoHS compliance standards for your manufacturing process. Ensure the design accommodates the specified thermal dissipation limits for the selected operating environment.

Selection Notes

Select this component when differential signal routing is required due to its dual-channel architecture. Verify that the 195 Ohm on-resistance meets the signal integrity requirements of the high-impedance loads. Ensure the 1.8V logic compatibility aligns with the system's control voltage levels.

Part Context

This part belongs to the TMUX13xxA family of low-voltage multiplexers optimized for high-impedance loads. It serves as a pin-compatible replacement for industry-standard 4052, 4852, and 1309 multiplexers, facilitating direct upgrades in existing designs without requiring schematic modifications.

Replacement Considerations

Pin-compatible alternatives include the TMUX1308A for single-ended applications. Other standard replacements are the 4052, 4852, and 1309 multiplexers. Verify functional equivalence regarding injection current handling and logic thresholds before substitution.

FAQ

How does the device handle input signals exceeding the supply voltage?

The internal injection current control circuitry allows signals on disabled or enabled paths to exceed VDD without affecting the enabled signal path or damaging the device.

What is the purpose of the Fail-Safe Logic feature?

It protects the device from potential damage by allowing voltages on the control pins (EN, A0, A1) to be applied before the supply voltage is present.

Does this multiplexer have an internal diode path to the supply pin?

No, the device does not have an internal diode path to the supply pin, which eliminates the risk of providing unintended power to the supply rail.