TPW3188Q-TS3R-S

Overview

The TPW3188Q-TS3R-S is an automotive-grade single-pole octal-throw (SP8T) analog switch manufactured by 3PEAK. It supports supply voltages of 1.8 V, 2.5 V, 3.3 V, and 5 V with a bandwidth of 250 MHz. The device features low on-state resistance, typically 75 Ω at 5 V and 650 Ω at 1.8 V. Switching times are fast, with tON at 22 ns and tOFF at 8 ns. It includes three digital select inputs (S0, S1, S2), eight independent I/Os, and an active-low enable input (/EN). Qualified to AEC-Q100 Grade 1, it operates from -40°C to +125°C. The TS3R suffix indicates the TSSOP-16 package in tape and reel format.

Feature Summary

• AEC-Q100 Grade 1 qualification for automotive reliability across extended temperature ranges.
• Break-before-make switching action prevents momentary shorting during channel transitions.
• Low power dissipation design enables high-speed switching with minimal supply current.
• Input signal range extends to the positive supply rail for flexible voltage handling.

Applications

• Automotive sensor multiplexing and signal routing
• Industrial control systems requiring isolated signal paths
• Battery-powered instrumentation with low standby current needs

Procurement Notes

Verify the specific ordering suffix matches the required package type. The TS3R suffix denotes the TSSOP-16 package configuration. Confirm that the component meets the necessary environmental standards for the target deployment environment before finalizing procurement orders.

Selection Notes

Select this component when an 8-channel multiplexer is required in an automotive or industrial setting. Ensure the system supply voltage aligns with the desired on-resistance performance. Verify that the TSSOP-16 package dimensions fit the PCB layout constraints compared to the QFN alternative.

Part Context

This part belongs to the TPW3188Q series of general-purpose analog switches designed for harsh environments. It serves as a direct pin-to-pin replacement for the industry-standard TPW4051, facilitating easier migration for existing designs while offering automotive-grade reliability enhancements.

Replacement Considerations

The datasheet explicitly identifies the TPW4051 as a compatible industry version for pin-to-pin replacement. Designers migrating from other SP8T devices should verify thermal characteristics and exact on-resistance tolerances against the original component specifications.

FAQ

What is the function of the /EN pin?

The /EN pin is an active-low digital enable input. When held HIGH, all internal switches are turned off, isolating the common port from the channels.

Does the device support simultaneous connection of multiple channels?

No, the TPW3188Q is a single-pole device. It connects only one of the eight independent channels (A0-A7) to the common port (D) at any given time based on the S0, S1, and S2 logic states.

How does the break-before-make feature benefit the circuit?

It ensures that the previous channel disconnects before the new channel connects. This prevents momentary short circuits between channels during switching operations, protecting downstream components.