Texas Instruments TMUX8108PWR

Overview

TMUX8108PWR from Texas Instruments is a single-channel 8:1 high-voltage analog multiplexer with ±50 V dual-supply or 100 V single-supply operation, 0.5 Ω on-resistance flatness, –110 dB crosstalk, and 40 pA input leakage-designed for precision signal routing in battery test equipment and semiconductor ATE.

For engineers reviewing the TMUX8108PWR datasheet, TMUX8108PWR pinout, TMUX8108PWR application, or TMUX8108PWR equivalent, key selection criteria include latch-up immunity, fail-safe 1.8-V logic compatibility up to 48 V, break-before-make switching, and TSSOP-16 package thermal performance under –40°C to +125°C industrial conditions.

Technical Context

The TMUX8108PWR implements a CMOS-based analog switch architecture with integrated logic decoder (A0–A2, EN) controlling eight bidirectional source pins (S1–S8) to a common drain (D). It supports asymmetric dual supplies and maintains consistent R_ON, leakage, and bandwidth across 10–100 V supply ranges.

Its fail-safe logic accepts 1.8 V to 48 V control signals independent of VDD/VSS, while latch-up immunity prevents destructive parasitic conduction in high-voltage transient environments-critical for automated test systems where supply sequencing is uncontrolled.

Key Specifications

Pinout & Package

PW package: 16-pin TSSOP (5 mm × 6.4 mm), thermally enhanced with exposed pad recommended to be tied to GND or VSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with TMUX8108RUMR, the TMUX8108PWR offers identical functionality in a larger TSSOP package with higher thermal resistance but broader manufacturing compatibility; versus ADG5208BRUZ, it delivers 4.5× higher voltage capability, 4× lower R_ON, and critical latch-up immunity for harsh test environments.

Availability

TMUX8108PWR is available at Aetrix Electronics and suitable for battery test equipment, semiconductor ATE, and industrial data acquisition systems requiring stable component supply across extended temperature and high-voltage operating conditions.

Supply support for TMUX8108PWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with broad industrial and automotive design expertise.

The TMUX8108PWR belongs to TI's high-voltage analog switch family, engineered specifically for robust signal routing in automated test equipment, battery management, and factory automation where supply flexibility, latch-up immunity, and precision parametrics are mandatory.

FAQ

What is the maximum supply voltage rating for TMUX8108PWR?

The TMUX8108PWR supports up to 100 V single-supply operation (VDD = 100 V, VSS = 0 V) or ±50 V dual-supply operation (VDD = +50 V, VSS = –50 V). Absolute maximum ratings allow VDD–VSS up to 110 V, but functional operation is specified from 10 V to 100 V differential. Exceeding 100 V violates recommended operating conditions and risks reliability degradation.

Does TMUX8108PWR support 1.8-V logic inputs with higher supply voltages?

Yes, TMUX8108PWR fully supports 1.8-V logic inputs while operating at high supply voltages (e.g., ±50 V or 100 V). Its logic pins accept 0–48 V regardless of VDD/VSS state-enabling direct interface to low-voltage FPGAs or MCUs without level shifters, even during partial power-up sequences.

Is TMUX8108PWR latch-up immune, and what does that mean for system design?

Yes, TMUX8108PWR features guaranteed latch-up immunity per JEDEC JESD78. This means it cannot enter destructive high-current latch-up states-even under overvoltage, ESD, or rapid supply transients-making it suitable for uncontrolled environments like semiconductor test handlers or battery pack monitoring where fault recovery is critical.

What is the on-resistance flatness specification for TMUX8108PWR, and why does it matter?

TMUX8108PWR specifies 0.5 Ω typical on-resistance flatness (ΔR_ON) across its full signal range. This tight flatness ensures minimal variation in signal attenuation as input voltage swings from –45 V to +45 V-critical for maintaining amplitude accuracy in wide-dynamic-range applications such as impedance spectroscopy or HV sensor conditioning.

Can TMUX8108PWR be used in bidirectional signal paths?

Yes, TMUX8108PWR supports fully bidirectional analog and digital signal routing between S1–S8 and D pins. Its symmetrical CMOS switch architecture imposes no directionality-allowing signals to flow source-to-drain or drain-to-source with identical R_ON, leakage, and bandwidth, which simplifies design in applications like loopback diagnostics or shared stimulus/response paths.