Nexperia USA Inc. 74LVC1G18GW,125

Overview

74LVC1G18GW,125 from Nexperia is a 1-of-2 non-inverting demultiplexer with 3-state deselected outputs, designed for signal routing in mixed-voltage digital systems. It accepts a single data input (A), routes it to either 1Y or 2Y based on select input (S) state, and places the unselected output in high-impedance OFF-state. Operates from 1.65 V to 5.5 V supply, supports 5.5 V-tolerant inputs, and features IOFF partial power-down protection - used in voltage-level translation between 3.3 V and 5 V logic domains.

For engineers reviewing the 74LVC1G18GW,125 datasheet, 74LVC1G18GW,125 pinout, 74LVC1G18GW,125 application, or 74LVC1G18GW,125 equivalent, key selection criteria include its dual-output 3-state demux function, Schmitt-trigger input tolerance, ±24 mA drive capability at 3.0 V, -40 °C to +125 °C operating range, and TSSOP6 (SOT363-2) package compatibility with space-constrained PCB layouts.

Technical Context

This device implements a single-pole double-throw (SPDT) signal switch using CMOS logic with non-inverting data path: input A passes unchanged to 1Y when S = LOW, or to 2Y when S = HIGH. The inactive output enters true high-impedance (Z) state per JEDEC-compliant 3-state specification, eliminating bus contention.

Its IOFF circuitry actively disables outputs during VCC = 0 V conditions, blocking backflow current up to ±50 mA, while Schmitt-trigger inputs tolerate slow-rising/falling edges and provide noise immunity exceeding 2000 V HBM ESD rating. Fully specified for partial power-down operation across 1.65–5.5 V supply range.

Key Specifications

Pinout & Package

TSSOP6 plastic thin shrink small outline package (SOT363-2), 6-lead, body width 1.25 mm, pin pitch 0.65 mm, footprint compatible with JEDEC MO-203 standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-to-2 demultiplexer applications.

Compared with SN74LVC1G18DBVR and 74AUP1G18GW,125, the 74LVC1G18GW,125 uniquely combines 5.5 V input tolerance, -40 °C to +125 °C operation, and TSSOP6 packaging - making it the only option suitable for industrial-grade mixed-voltage signal routing with full thermal and voltage margin.

Availability

74LVC1G18GW,125 is available at Aetrix Electronics and suitable for industrial automation controllers, FPGA configuration subsystems, and automotive body electronics requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74LVC1G18GW,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, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC1G18 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for robust voltage translation and signal integrity in space- and power-constrained digital systems.

FAQ

Can 74LVC1G18GW,125 operate with VCC = 1.8 V while accepting 3.3 V inputs?

Yes. Its inputs are overvoltage tolerant up to 5.5 V regardless of VCC level. At VCC = 1.8 V, VIH is 0.65 × VCC = 1.17 V and VIL is 0.35 × VCC = 0.63 V, allowing reliable recognition of 3.3 V logic HIGH/LOW states without damage or level shifting.

Does the device support hot insertion when VCC is unpowered?

Yes. The IOFF circuit ensures outputs are disabled and leakage current remains below ±2 μA when VCC = 0 V, preventing back-current flow from live system buses into the unpowered IC - satisfying IEC 61000-4-2 and hot-swap design requirements.

What is the maximum capacitive load this demux can drive reliably?

With 24 mA output drive at VCC = 3.0 V and 3.0 ns typical propagation delay, it reliably drives ≤30 pF loads (including trace and input capacitance) while maintaining <1 ns skew between 1Y and 2Y outputs - verified per JEDEC test condition CL = 30 pF, RL = 1 kΩ.

How does Schmitt-trigger action improve noise immunity in real-world layouts?

Schmitt-trigger inputs provide ~0.3 V hysteresis on both A and S pins, rejecting noise spikes <300 mV peak-to-peak and tolerating slow edge rates down to 20 ns/V (at VCC = 1.65 V), which prevents false triggering from crosstalk or long PCB traces in electrically noisy industrial enclosures.