TMUX1308QPWRQ1

Overview

The TMUX1308QPWRQ1 is an automotive-grade, single-channel 8:1 CMOS multiplexer switch manufactured by Texas Instruments. It operates on a single supply voltage ranging from 1.62 V to 5.5 V and supports bidirectional analog and digital signals between ground and the supply rail. The device features a maximum on-resistance of 195 Ohms with a channel-to-channel matching of 7 Ohms. Key electrical parameters include a -3dB bandwidth of 500 MHz, typical off-isolation of -110 dB, and a propagation delay of 30 ns. Switching times are specified at a maximum of 32 ns for turn-on and 40 ns for turn-off. It is housed in a 16-TSSOP package and complies with AEC-Q100 standards for automotive applications.

Feature Summary

• Internal injection current control protects switches and keeps input signals within power supply ranges without external components.
• No internal diode paths to the VDD pin prevent damage to connected components or accidental power supply to rails.
• Logic inputs are compatible with 1.8V logic thresholds, ensuring TTL and CMOS compatibility across the operating voltage range.
• Fail-safe logic circuitry allows voltage application to control pins before power supply pins to protect against potential damage.

Applications

• Automotive infotainment systems requiring signal routing
• Industrial data acquisition systems
• Medical equipment signal conditioning

Procurement Notes

Verify the specific suffix 'QPWRQ1' corresponds to the TSSOP-16 package and automotive grade qualification. Confirm AEC-Q100 certification status for your target environment. Check RoHS compliance details as indicated in official documentation. Ensure the ordering part number matches the required tape and reel specifications for surface mount assembly processes.

Selection Notes

Select this component when an 8:1 multiplexing configuration is required in a compact 16-pin package. The 195 Ohm on-resistance suits general-purpose signal switching rather than high-current applications. The 500 MHz bandwidth supports high-frequency signal integrity needs. Verify that the 1.62 V minimum supply voltage aligns with the system's power architecture.

Part Context

This device belongs to the TMUX13xx-Q1 family of CMOS multiplexers designed for automotive reliability. It serves as a direct pin-compatible replacement for industry-standard 4051 and 4851 multiplexers. The Q1 designation indicates adherence to automotive quality and reliability standards, distinguishing it from commercial-grade variants in the same series.

Replacement Considerations

The TMUX1308DYYRQ1 offers a similar function in a SOT-23-THIN-16 package. The TMUX1308AQDYYRQ1 provides comparable performance in a thin SOT-23 form factor. Verify pinout compatibility and package dimensions before substituting these alternatives in existing designs.

FAQ

Can the control inputs tolerate voltages exceeding the supply voltage?

Yes, the control inputs (Ax) can withstand up to 5.5 V regardless of the applied supply voltage.

What is the maximum leakage current specification?

The maximum off-state leakage current (IS(off)) is typically 1 nA.

Does the device support bidirectional signal flow?

Yes, the source (Sx) and drain (Dx) pins support bidirectional analog and digital signals from ground to VDD.