Nexperia USA Inc. 74LVC1G157GM,132

Overview

74LVC1G157GM,132 from Nexperia is a single 2-input CMOS multiplexer with Schmitt-trigger inputs, IOFF partial power-down protection, and dual-voltage translation capability (1.65 V to 5.5 V supply). It selects between two data sources (I0/I1) using a common select input (S), delivering the chosen signal to output Y. Used in mixed-voltage logic interfacing, level-shifting I/O expansion, and low-power signal routing in portable and industrial control systems.

For engineers reviewing the 74LVC1G157GM,132 datasheet, 74LVC1G157GM,132 pinout, 74LVC1G157GM,132 application, or 74LVC1G157GM,132 equivalent, key selection criteria include its 6-terminal XSON6 package (SOT886), ±24 mA drive at 3.0 V, IOFF-enabled hot-swap compatibility, -40 °C to +125 °C operation, and guaranteed propagation delay ≤5.0 ns at 5 V.

Technical Context

This device implements a single-pole double-throw (SPDT) analog/digital signal selector using standard LVC logic architecture. Its Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at 3.3 V), enabling robust operation with slow-rising signals from microcontrollers or sensors.

The IOFF circuit actively disables output Y when VCC = 0 V, blocking backflow current up to ±50 mA - critical for live insertion and multi-rail system partitioning. Input overvoltage tolerance to 5.5 V allows safe interfacing with 5 V sources even when powered from 1.8 V or 2.5 V rails.

Key Specifications

Pinout & Package

XSON6 plastic extremely thin small outline package (SOT886); no leads; 6 terminals; body dimensions 1.0 × 1.45 × 0.5 mm; wettable flank terminals for automated optical inspection (AOI).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input multiplexer applications.

Compared with SN74LVC1G157DBVR, the 74LVC1G157GM,132 offers 40% smaller footprint and better thermal performance for high-density portable designs; compared with 74LVC1G3157GM,132, it lacks enable control but delivers identical multiplexing functionality at lower cost and gate count where bus arbitration isn't required.

Availability

74LVC1G157GM,132 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable device I/O expansion, automotive body control modules, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74LVC1G157GM,132 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC1G157 belongs to Nexperia's LVC logic family, engineered for low-voltage operation, mixed-supply interoperability, and robustness in harsh environments - targeting space-constrained, power-sensitive, and thermally demanding applications.

FAQ

Can 74LVC1G157GM,132 operate with VCC = 1.8 V while interfacing with 5 V inputs?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC, allowing safe connection to 5 V sources when powered from 1.8 V. The output swings from 0 V to 1.8 V, so downstream logic must accept 1.8 V as HIGH - verified by VIH = 0.65×VCC (1.17 V min) at this rail.

Does the IOFF feature require external pull-down resistors on Y during power-down?

No. IOFF actively disables the output stage when VCC = 0 V, presenting high impedance (>10 MΩ) at Y without external components. This eliminates leakage paths and avoids unintended signal coupling in multi-rail systems during power sequencing.

What is the maximum capacitive load the Y output can drive while maintaining 5 ns propagation delay?

At VCC = 5 V, the 5 ns max tpd is specified with CL = 50 pF (per Table 10). Driving >50 pF increases delay nonlinearly; for 30 pF loads (common in PCB traces + input capacitance), tpd remains ≤4.0 ns - confirmed in Table 8 under "I0, I1 to Y" conditions.

How does the Schmitt-trigger input improve reliability in noisy environments?

Schmitt action provides ~0.3 V hysteresis at 3.3 V, meaning the input must transition fully below 1.35 V to register LOW and above 1.65 V to register HIGH. This prevents multiple toggles from slow or noisy edges - critical for reliable debouncing of mechanical switches or long-cable sensor signals.