Texas Instruments TS5A3357DCUR

Overview

TS5A3357 from Texas Instruments is a single-channel, 3:1 analog multiplexer/demultiplexer switch with 5 Ω typical ON-state resistance, break-before-make switching, and 334 MHz bandwidth at 5 V supply. It operates from 1.65 V to 5.5 V, supports bidirectional signal routing, and is used in portable audio signal path selection where low THD (0.05%) and minimal charge injection (3.4 pC) preserve signal fidelity.

For engineers reviewing the TS5A3357 datasheet, TS5A3357 pinout, TS5A3357 application, or TS5A3357 equivalent, key selection criteria include its VSSOP-8 package, dual digital control inputs (IN1/IN2), 0.5 ns break-before-make time, and compatibility with 1.8 V–5.5 V logic-level control in space-constrained portable systems.

Technical Context

The TS5A3357 implements a CMOS-based SP3T (single-pole, triple-throw) analog switch architecture with independent IN1/IN2 control enabling selection among three normally-open paths (NO0–NO2) to a common terminal (COM). Its break-before-make timing prevents momentary shorting between channels during state transitions.

It features rail-to-rail analog signal handling up to V+, 5.5-V-tolerant digital inputs, and matched ON-resistance (Δron = 0.1 Ω) across channels - critical for precision instrumentation and high-fidelity audio routing where channel-to-channel gain consistency is required.

Key Specifications

Pinout & Package

VSSOP-8 package (2.3 mm × 2.0 mm body size), thermally enhanced for compact portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMUX1574RTER and ADG774ARUZ, the TS5A3357 delivers guaranteed 0.5 ns break-before-make, lower THD, and true single-chip 3:1 integration - making it optimal for portable audio and medical sensing where signal integrity and minimal component count are critical.

Availability

TS5A3357 is available at Aetrix Electronics and suitable for portable instrumentation, USB-C interface management, and medical sensor signal routing requiring stable component supply across industrial and consumer production cycles.

Supply support for TS5A3357 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 and embedded processing technologies, with decades of expertise in precision signal chain and power management solutions.

The TS5A3357 belongs to TI's high-performance analog switch portfolio, designed specifically for low-distortion, low-power signal routing in battery-operated portable electronics where size, efficiency, and fidelity are paramount.

FAQ

What is the maximum analog signal voltage the TS5A3357 can handle?

The TS5A3357 supports analog signals from 0 V to V+, where V+ ranges from 1.65 V to 5.5 V. For example, with a 3.3 V supply, the analog signal swing is limited to 0–3.3 V. Exceeding V+ on any analog pin may damage the device, as confirmed in Absolute Maximum Ratings (Section 7.1).

Does the TS5A3357 require external pull-up or pull-down resistors on its control pins?

Yes - unused or floating IN1/IN2 pins must be tied to V+ or GND to prevent undefined switching states. TI recommends 50-Ω termination to ground for unused pins and explicit biasing of IN1/IN2 to avoid unintended channel activation, per Application Note SCBA004.

Can the TS5A3357 be used in bidirectional signal paths?

Yes - the TS5A3357 is fully bidirectional: COM, NO0, NO1, and NO2 support signal flow in either direction. This is explicitly stated in Section 9.1 and validated by symmetric ON-resistance and capacitance specs (CNO(ON) = CCOM(ON) = 17 pF at 5 V).

What is the significance of the 0.1 Ω ON-resistance match (Δron) in the TS5A3357?

The 0.1 Ω Δron ensures that the ON-resistance variation between NO0, NO1, and NO2 paths is tightly controlled. This minimizes gain mismatch in multi-channel instrumentation or audio mixing applications, enabling accurate relative signal amplitude preservation without per-channel calibration.

How does the TS5A3357's charge injection specification impact sampling systems?

With 3.4 pC charge injection at 5 V, the TS5A3357 introduces minimal voltage glitch on sampled-hold nodes. In a 0.1 nF load (per Figure 21), this yields ~34 mV transient - acceptable for 12-bit systems but requiring careful timing alignment in high-resolution data acquisition to avoid aperture error.