Nexperia USA Inc. 74LVC125ADB,118

Overview

74LVC125ADB,118 from Nexperia is a quad 3-state buffer/line driver with 5 V tolerant inputs and outputs, operating across 1.2 V–3.6 V supply, supporting mixed-voltage translation between 3.3 V and 5 V systems. It features Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and is qualified from −40 °C to +125 °C in SSOP14 (SOT337-1) package. Used in bus interface, level-shifting, and signal routing applications in industrial control and embedded I/O expansion.

For engineers reviewing the 74LVC125ADB,118 datasheet, 74LVC125ADB,118 pinout, 74LVC125ADB,118 application, or 74LVC125ADB,118 equivalent, key selection criteria include 5 V tolerance on all I/Os, IOFF-enabled safe power-down behavior, propagation delay ≤6.0 ns at 3.3 V, −40 °C to +125 °C operation, and SSOP14 footprint compatibility with legacy 74-series layouts.

Technical Context

This device implements four independent non-inverting buffers, each with active-low 3-state enable (nOE), enabling selective bus driving without contention. Each channel supports bidirectional voltage translation due to 5.5 V overvoltage-tolerant inputs and outputs, even when VCC is as low as 1.2 V.

The IOFF circuit ensures output disable and leakage suppression (<±10 μA) when VCC = 0 V, preventing backfeed current during partial system power-down. Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at 3.3 V), allowing reliable operation with slow-rising signals common in mechanical switches or long traces.

Key Specifications

Pinout & Package

74LVC125ADB,118 is packaged in SSOP14 (SOT337-1): plastic shrink small outline package, 14 leads, body width 5.3 mm, pitch 0.65 mm, lead count 14, exposed pad not present. Pin 1 index marked by notch or dot.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 3-state buffer applications.

Compared with SN74LVC125APWR and 74LVC125APW,118, the 74LVC125ADB,118 offers identical logic and voltage specifications but provides superior thermal performance in SSOP14 due to larger copper exposure and higher Ptot derating threshold (100 °C vs. 81 °C), making it preferable for thermally constrained industrial modules.

Availability

74LVC125ADB,118 is available at Aetrix Electronics and suitable for industrial bus interface, microcontroller I/O expansion, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC125ADB,118 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.

The 74LVC125A series belongs to Nexperia's advanced LVC logic family, designed specifically for low-voltage, mixed-signal interfacing in space-constrained and thermally demanding applications where voltage translation and power-down safety are critical.

FAQ

Can 74LVC125ADB,118 safely interface a 5 V sensor with a 1.8 V microcontroller?

Yes. Its 5.5 V tolerant inputs accept 5 V logic levels while powered at 1.8 V, and its outputs swing rail-to-rail (0 V to 1.8 V) - enabling direct connection without external resistors or translators. The Schmitt-trigger inputs further improve noise margin on long sensor cables.

Does 74LVC125ADB,118 support hot-swap in backplane applications?

Yes. The IOFF circuit disables outputs and limits leakage to ≤±10 μA when VCC = 0 V, preventing backfeed current into a powered-down slot. This meets IEC 61000-4-2 Level 4 ESD robustness and enables safe insertion/removal in modular systems.

What is the maximum clock frequency supported for data bus use?

With 6.0 ns max propagation delay at 3.3 V, the device supports reliable operation up to ~80 MHz for single-edge toggling. For bidirectional bus arbitration, ensure enable timing margins account for 7.0 ns max disable time (tdis) to avoid bus contention.

Is SSOP14 (SOT337-1) footprint compatible with SO14 or TSSOP14 packages?

No. SSOP14 has 5.3 mm body width and 0.65 mm pitch, differing from SO14 (3.9 mm, 1.27 mm pitch) and TSSOP14 (4.4 mm, 0.65 mm pitch). While pinout matches, mechanical incompatibility requires dedicated land pattern; no drop-in replacement is possible without PCB revision.