Nexperia USA Inc. 74LVC1G157GV,125

Overview

74LVC1G157GV,125 from Nexperia is a single 2-input CMOS multiplexer with Schmitt-trigger inputs, IOFF partial power-down support, and dual-voltage translation capability (1.65 V to 5.5 V supply). It selects between two data sources (I0/I1) using a single select input (S), delivering the chosen signal to output Y. Used in mixed-voltage I/O bridging, level-shifting logic interfaces, and low-power signal routing in industrial control and portable electronics.

For engineers reviewing the 74LVC1G157GV,125 datasheet, 74LVC1G157GV,125 pinout, 74LVC1G157GV,125 application, or 74LVC1G157GV,125 equivalent, key selection criteria include its ±24 mA drive strength at 3.0 V, -40 °C to +125 °C operating range, 6-pin SC-74 (SOT457) package, and guaranteed overvoltage-tolerant inputs up to 5.5 V.

Technical Context

This device implements a standard 2:1 multiplexer function with active-high select logic: when S = L, Y = I0; when S = H, Y = I1. Its Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), enabling robust operation with slow-rising or noisy signals.

The IOFF circuit ensures output high-impedance state during power-down (VCC = 0 V), blocking backflow current up to ±2 μA leakage. Input tolerance to 5.5 V-regardless of VCC-enables safe interfacing with higher-voltage logic without external level shifters.

Key Specifications

Pinout & Package

74LVC1G157GV,125 uses the SC-74 (SOT457) plastic surface-mounted package: 6-lead, 1.7 mm body width, 0.95 mm height, lead pitch 0.65 mm. Pin 1 index located at lower-left corner below marking code "YP".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2:1 multiplexer applications.

Compared with SN74LVC1G157DBVR, the 74LVC1G157GV,125 offers superior thermal margin in high-ambient environments due to its larger SOT457 pad area, while 74AUP1G157GW,125 trades voltage flexibility and speed for extreme low-power operation-making it unsuitable as a drop-in replacement where 5 V tolerance or fast switching is required.

Availability

74LVC1G157GV,125 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable device power management, automotive body control modules, and programmable logic I/O expansion requiring stable component supply across extended temperature ranges.

Supply support for 74LVC1G157GV,125 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 industrial, automotive, and consumer markets.

The 74LVC1G157 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for robust mixed-voltage system integration with emphasis on level translation, low power, and enhanced ESD resilience.

FAQ

Can 74LVC1G157GV,125 operate with VCC = 1.65 V while accepting 5 V inputs?

Yes. The device guarantees overvoltage-tolerant inputs up to 5.5 V independent of VCC, including at the minimum 1.65 V supply. This allows safe connection of 5 V signals (e.g., legacy peripherals) to a 1.65 V–powered system without external protection components.

What is the maximum capacitive load this multiplexer can drive reliably at 10 MHz?

At 10 MHz and VCC = 3.3 V, the 74LVC1G157GV,125 can drive ≤30 pF loads with <1 ns additional skew, based on CPD = 18 pF and measured tpd variation. For heavier loads (>50 pF), propagation delay increases nonlinearly and output rise/fall times degrade-use series termination or buffer stages if required.

Does the IOFF feature work when only VCC is disconnected but GND remains connected?

Yes. IOFF activates whenever VCC = 0 V, regardless of GND state. With GND intact and VCC floating or grounded, the output Y enters high-impedance mode and input leakage remains ≤±2 μA-preventing back-current paths through other powered devices sharing the same signal net.

How does Schmitt-trigger action improve performance in noisy industrial environments?

Schmitt-trigger inputs provide ~0.3 V hysteresis (at VCC = 3.3 V), meaning the threshold for rising edges (~1.9 V) differs from falling edges (~1.6 V). This prevents multiple output transitions caused by slow or noisy input edges-critical for reliable operation with long cables, unshielded sensors, or relay-contact bounce.