Nexperia USA Inc. 74LVC1G126GZYL

Overview

74LVC1G126GZYL from Nexperia is a single 3-state bus buffer/line driver with Schmitt-trigger inputs, IOFF partial power-down support, and overvoltage-tolerant inputs up to 5.5 V. It operates from 1.65 V to 5.5 V, delivers ±24 mA output drive at 3.0 V, and functions across –40 °C to +125 °C - enabling level translation between 3.3 V and 5 V logic domains in industrial I/O expansion and sensor interface circuits.

For engineers reviewing the 74LVC1G126GZYL datasheet, 74LVC1G126GZYL pinout, 74LVC1G126GZYL application, or 74LVC1G126GZYL equivalent, this device is selected for mixed-voltage signal routing where low quiescent current (≤4 μA), high noise immunity, fast propagation delay (≤4.5 ns at 3.3 V), and robust ESD protection (HBM >2000 V) are required in space-constrained PCB layouts.

Technical Context

This device implements a non-inverting 3-state buffer with active-high output enable (OE). Its Schmitt-trigger input thresholds provide hysteresis (typically 0.3–0.4 V at 3.3 V), allowing reliable operation with slow-rising signals from microcontrollers or mechanical switches. The IOFF circuit actively disables outputs during power-down, blocking backflow current when VCC = 0 V.

It complies with JEDEC standards JESD8-7 (1.65–1.95 V), JESD8-5 (2.3–2.7 V), JESD8C (2.7–3.6 V), and JESD36 (4.5–5.5 V), ensuring interoperability across legacy and modern logic families including TTL and LVC. Input voltage tolerance to 5.5 V enables direct connection to 5 V sources without external level-shifting components.

Key Specifications

Pinout & Package

XSON5 package (SOT8065-1): plastic thermal-enhanced extremely thin small outline package with side-wettable flanks (SWF); 5 terminals; body size 1.1 × 0.85 × 0.5 mm; no leads; designed for automated optical inspection (AOI) and high-density reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G126DBVR and 74LVC1G125GW, the 74LVC1G126GZYL offers superior thermal performance and automated optical inspectability in a 30% smaller footprint, making it optimal for next-generation miniaturized industrial and automotive control units where board area and reliability are prioritized over manual serviceability.

Availability

74LVC1G126GZYL is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, IoT sensor hubs, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and high-volume production cycles.

Supply support for 74LVC1G126GZYL 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, and energy-efficient logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC1G126 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for robust mixed-voltage interfacing, low static/dynamic power, and industrial-grade reliability in space- and power-constrained embedded systems.

FAQ

What is the maximum input voltage the 74LVC1G126GZYL can tolerate when VCC = 1.8 V?

The device tolerates input voltages up to 5.5 V regardless of VCC level, per datasheet Table 5 (VI input voltage limit) and Section 1. General description. This overvoltage capability allows direct connection to 5 V sources without external clamping, even when powered from 1.8 V - critical for mixed-supply system integration.

Does the 74LVC1G126GZYL support hot insertion in live backplanes?

Yes - its IOFF circuitry actively disables outputs and limits power-off leakage to ≤±2 μA when VCC = 0 V, preventing back-current flow into the device during hot-plug events. This behavior is verified in Table 7 (IOFF parameter) and Section 1, making it suitable for modular industrial backplane designs requiring live card replacement.

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

It provides input hysteresis of ~0.3–0.4 V at 3.3 V (Section 1, Table 7), meaning the rising and falling input thresholds differ by that amount. This prevents multiple output transitions due to slow or noisy edges - eliminating the need for external RC filters on switch debouncing or long-trace sensor lines, as confirmed in Functional Description and Static Characteristics sections.

Can the 74LVC1G126GZYL drive a 50 pF capacitive load at 10 MHz without signal degradation?

Yes - with typical propagation delay of 2.0 ns and output drive of ±24 mA at 3.0 V (Table 8, Table 2), it maintains clean edges into 50 pF loads (per test condition in Table 10). Dynamic power dissipation is calculated as PD = CPD × VCC² × fi × N, where CPD = 25 pF (enabled) ensures <1.5 mW additional dynamic load at 10 MHz and 3.3 V, well within its 250 mW total power limit.