Nexperia USA Inc. 74AXP1G157GSH

Overview

74AXP1G157GSH from Nexperia is a single 2-input Schmitt-trigger multiplexer operating from 0.7 V to 2.75 V supply, selecting between I0 and I1 under S control to deliver true (non-inverted) output Y. It features IOFF partial power-down protection, 0.5 pF input capacitance, and −40 °C to +85 °C operation-used in low-voltage signal routing for portable sensor interfaces and battery-powered logic subsystems.

For engineers reviewing the 74AXP1G157GSH datasheet, 74AXP1G157GSH pinout, 74AXP1G157GSH application, or 74AXP1G157GSH equivalent, key selection criteria include ultra-low static current (0.6 µA max at 85 °C), sub-1 ns propagation delay at 2.3–2.7 V, Schmitt-trigger noise immunity, and XSON6 package compatibility with high-density PCB layouts.

Technical Context

This device implements a single-pole double-throw (SPDT) analog/digital multiplexer function using CMOS logic with Schmitt-trigger inputs to tolerate slow-rising signals and reject noise. Its IOFF circuit actively disables output leakage when VCC = 0 V, enabling safe hot-insertion and bus-sharing in multi-rail systems.

It supports JEDEC voltage standards across five VCC ranges (1.1–1.3 V, 1.4–1.6 V, etc.), ensuring interoperability with mixed-supply SoCs and microcontrollers. Propagation delay varies from 0.9 ns (min, 2.3–2.7 V) to 138 ns (max, 0.75–0.85 V), scaling predictably with supply voltage and load.

Key Specifications

Pinout & Package

XSON6 plastic extremely thin small outline package (no leads); body dimensions 1.0 mm × 1.0 mm × 0.35 mm (SOT1202); thermal pad optional; pin 1 indicator located on lower-left corner below marking code.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC1G157GV and SN74LVC1G157DBVR, the 74AXP1G157GSH uniquely supports sub-1 V operation, integrates IOFF for system-level power management, and delivers superior noise rejection via Schmitt-trigger inputs-making it optimal for ultra-low-power, mixed-voltage, and EMI-prone environments.

Availability

74AXP1G157GSH is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable device power sequencing, and IoT edge node data multiplexing requiring stable component supply across extended temperature and ultra-low-voltage conditions.

Supply support for 74AXP1G157GSH 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 delivering high-performance logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in consumer, industrial, and automotive applications.

The 74AXP series targets ultra-low-power, wide-VCC logic functions for battery-constrained and mixed-supply systems-designed specifically for energy-efficient signal routing in wearables, IoT endpoints, and portable medical devices.

FAQ

Does the 74AXP1G157GSH support true analog signal switching?

No. It is a digital CMOS multiplexer with rail-to-rail input voltage tolerance (up to 2.75 V), but its pass transistors are not characterized for analog linearity, THD, or on-resistance flatness. Use only for digital signal routing or slowly varying logic-level analog signals where distortion is acceptable.

Can the 74AXP1G157GSH be used with VCC = 0 V while other system rails remain active?

Yes. The IOFF circuit automatically disables the output when VCC = 0 V, limiting backflow current to ±0.1 µA max. This allows safe connection to live 1.8 V or 2.5 V buses during firmware updates or partial system resets without risk of damage.

What is the minimum recommended load capacitance for achieving specified propagation delay?

The datasheet specifies propagation delay with CL = 5 pF (test condition in Table 10). Performance degrades linearly with higher capacitance: Figure 8–12 show tpd increases by ~0.1 ns per 1 pF above 5 pF at 2.5 V. For <1 ns delay, keep total load ≤10 pF including trace and probe capacitance.

How does Schmitt-trigger action affect the input threshold voltages?

Schmitt-trigger thresholds scale with VCC: VIH ≥ 0.65 × VCC and VIL ≤ 0.35 × VCC over 1.1–1.95 V range. Hysteresis is typically 0.15 × VCC, providing noise margins of ≥150 mV at 1.2 V and ≥300 mV at 2.0 V-critical for reliable decoding of mechanical switch or encoder signals.