Nexperia USA Inc. 74LVC1G125GF,132

Overview

74LVC1G125GF,132 from Nexperia is a single 3-state bus buffer/line driver with Schmitt-trigger inputs, designed for level translation between 1.65 V–5.5 V logic domains. It supports mixed-voltage interfacing (e.g., 3.3 V MCU to 5 V peripheral), features ±24 mA output drive at 3.0 V, IOFF partial power-down protection, and operates from –40 °C to +125 °C in the SOT891 package.

For engineers reviewing the 74LVC1G125GF,132 datasheet, 74LVC1G125GF,132 pinout, 74LVC1G125GF,132 application, or 74LVC1G125GF,132 equivalent, this device serves as a compact, low-power, voltage-tolerant interface solution for space-constrained industrial control, portable instrumentation, and automotive body electronics where rail-to-rail input compatibility and high noise immunity are required.

Technical Context

This device implements a non-inverting buffer with active-low 3-state enable (OE), enabling bidirectional bus control in shared-data-path systems. Its Schmitt-trigger inputs accept slow-rising signals (Δt/ΔV down to 20 ns/V at 1.65 V) and tolerate overvoltage up to 5.5 V regardless of VCC.

The IOFF circuit ensures output isolation during partial power-down by disabling the output stage when VCC = 0 V, limiting backflow current to ≤±2 μA - critical for hot-swap and multi-rail power sequencing in embedded systems.

Key Specifications

Pinout & Package

SOT891 (XSON6) package: plastic extremely thin small outline, no leads, 6 terminals, body size 1.2 × 1.0 × 0.35 mm, side-wettable flanks optional. Pin 1 marked by indentation on lower-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G125DBVR and 74LVC1G125GW,125, the 74LVC1G125GF,132 offers superior thermal performance in ultra-compact layouts and native support for automated optical inspection (AOI) via side-wettable flanks - making it optimal for high-reliability, high-density automotive and industrial modules.

Availability

74LVC1G125GF,132 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, portable medical instrumentation, and smart energy metering interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC1G125GF,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 delivering high-performance, reliable discrete, logic, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in demanding applications.

The 74LVC1G125 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered specifically for voltage translation and bus interfacing in space-constrained, mixed-supply embedded systems - emphasizing low power, wide VCC tolerance, and industrial-grade reliability.

FAQ

Can 74LVC1G125GF,132 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 rated supply of 1.65 V. This is achieved via internal input clamping structures that prevent forward-biasing of substrate diodes, allowing safe 5 V signal injection into 1.8 V or 1.65 V systems without external components.

What is the maximum capacitive load the output can drive while maintaining specified tpd?

The datasheet specifies propagation delay (tpd) with a 50 pF load at VCC = 3.0–3.6 V. At 50 pF and 3.3 V, tpd remains ≤4.5 ns. Driving >50 pF increases delay nonlinearly and may exceed timing budgets; for 100 pF loads, measured tpd rises to ~7 ns - derating must be applied in high-capacitance routing scenarios.

Does the n.c. pin on SOT891 require PCB connection or grounding?

No. The n.c. (no-connect) pin is internally unconnected and electrically inert. It may be left floating on the PCB, though grounding it improves mechanical stability and thermal dissipation marginally. Neither connection nor omission affects electrical performance or reliability per Nexperia's qualification testing.

How does IOFF behavior differ from standard high-impedance disable mode?

Standard 3-state disable leaves output transistors in cutoff but does not block current if VCC = 0 V and external voltage is applied to Y or A. IOFF actively disables both PMOS and NMOS output transistors and adds isolation circuitry, limiting leakage to ≤±2 μA even when VCC = 0 V and Y/A are biased to 5.5 V - essential for hot-swap and multi-rail sequencing.