Nexperia USA Inc. 74LVC1G125GW,165

Overview

74LVC1G125GW,165 from Nexperia is a single 3-state bus buffer/line driver with Schmitt-trigger inputs, operating from 1.65 V to 5.5 V supply, supporting mixed-voltage translation between 3.3 V and 5 V systems, delivering ±24 mA output drive at VCC = 3.0 V, and specified for -40 °C to +125 °C industrial operation.

For engineers reviewing the 74LVC1G125GW,165 datasheet, 74LVC1G125GW,165 pinout, 74LVC1G125GW,165 application, or 74LVC1G125GW,165 equivalent, this device serves as a low-power, voltage-tolerant interface buffer in space-constrained digital subsystems requiring fast enable/disable control, IOFF protection during partial power-down, and robust noise immunity in mixed-supply environments.

Technical Context

This device implements a non-inverting buffer with active-low 3-state output enable (OE), enabling bidirectional bus isolation. Its Schmitt-trigger inputs accept slow-rising signals and tolerate input voltages up to 5.5 V regardless of VCC, allowing direct interfacing with legacy 5 V TTL logic while powered from 1.65–5.5 V supplies.

The IOFF circuit ensures output high-impedance state and blocks backflow current when VCC = 0 V, making it suitable for hot-swap and partial power-down architectures. Propagation delay ranges from 0.5 ns (VCC = 4.5–5.5 V) to 10.5 ns (VCC = 1.65–1.95 V, -40 °C to +85 °C), with enable/disable times under 6.5 ns across full voltage and temperature range.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-lead, 1.25 mm body width, 0.65 mm lead pitch, 0.5 mm max height - optimized for automated placement and reflow in compact consumer and industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus buffer applications.

Compared with SN74LVC1G125DBVR and 74AUP1G125GW,165, the 74LVC1G125GW,165 uniquely balances wide-voltage translation, industrial temperature range, and TSSOP5 manufacturability-making it optimal for cost-sensitive, mixed-supply embedded systems where footprint and thermal performance are critical.

Availability

74LVC1G125GW,165 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, microcontroller GPIO expansion, and USB-C power delivery sequencing requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74LVC1G125GW,165 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 specializing in high-performance, energy-efficient logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC1G125 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for robust, low-power voltage translation and bus interfacing in space-constrained, mixed-supply embedded systems.

FAQ

Can the 74LVC1G125GW,165 operate with VCC = 1.65 V while driving a 5 V input signal?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC, so a 5 V signal applied to pin A is safely clamped and interpreted correctly even at minimum 1.65 V supply. This enables true bidirectional voltage translation without external components.

What happens to the output when VCC is removed but OE remains high?

The IOFF circuit activates automatically when VCC drops to 0 V, forcing the Y output into high-impedance state and limiting leakage current to ±2 μA. This prevents backfeeding into powered downstream circuits and protects against latch-up during power sequencing.

Is the TSSOP5 (SOT353-1) package compatible with standard reflow profiles?

Yes. The SOT353-1 package is qualified for IPC/JEDEC J-STD-020D reflow, with peak temperature up to 260 °C and 60-second exposure above 217 °C. Its 0.65 mm pitch and exposed pad-free design ensure reliable solder joint formation in automated assembly.

How does the Schmitt-trigger input improve noise immunity compared to standard CMOS inputs?

It provides ≥0.3 V hysteresis, meaning the input threshold rises to ~1.9 V after a LOW-to-HIGH transition and falls to ~1.6 V after HIGH-to-LOW-rejecting noise spikes smaller than 300 mV and preventing chatter on slow-rising signals from mechanical switches or long cables.