Nexperia USA Inc. 74AHC1G126GV-Q100H

Overview

74AHC1G126GV-Q100 from Nexperia is a single-channel 3-state bus buffer/line driver with CMOS-level inputs, overvoltage-tolerant inputs (up to 5.5 V), symmetrical output impedance, and AEC-Q100 Grade 1 qualification for automotive use. It operates from 2.0 V to 5.5 V supply, delivers ≤7.0 ns propagation delay at 5 V/50 pF, and supports mixed-voltage signal translation in body control modules and infotainment interfaces.

For engineers reviewing the 74AHC1G126GV-Q100 datasheet, 74AHC1G126GV-Q100 pinout, 74AHC1G126GV-Q100 application, or 74AHC1G126GV-Q100 equivalent, key selection criteria include its 3-state enable timing (≤9.5 ns disable time), input voltage tolerance across rail boundaries, automotive temperature range (−40 °C to +125 °C), and SC-74A (SOT753) package compatibility with high-density PCB layouts.

Technical Context

This device implements a non-inverting buffer with active-low 3-state output control (OE), enabling bidirectional bus isolation in automotive serial communication paths. Its CMOS input threshold (VIH = 3.85 V min at VCC = 5.5 V) ensures robust noise immunity and compatibility with 3.3 V/5 V logic domains.

The architecture provides balanced tPLH/tPHL propagation delays (≤7.0 ns at VCC = 5 V, CL = 50 pF), matched enable/disable timing (ten ≤ 9.0 ns, tdis ≤ 11.0 ns), and low dynamic power dissipation (CPD = 9 pF), making it suitable for low-jitter signal conditioning in CAN/LIN subsystems and sensor interface multiplexing.

Key Specifications

Pinout & Package

74AHC1G126GV-Q100 uses the SC-74A (SOT753) surface-mount package: plastic, 5-terminal, 1.3 mm × 1.1 mm × 0.95 mm body, with gull-wing leads and pin 1 indicator in lower-left corner below marking "A26".

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHC1G126GV-Q100, the AHCT variant offers easier integration with legacy 5 V logic but sacrifices input voltage tolerance margin; the LVC part reduces cost and footprint but forfeits automotive qualification and long-term supply assurance.

Availability

74AHC1G126GV-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment interfaces, and engine control unit sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC1G126GV-Q100 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 logic, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile applications.

This device belongs to Nexperia's AEC-Q100-qualified 74AHC logic family, designed specifically for robust signal buffering and voltage translation in harsh automotive environments where reliability and thermal stability are mission-critical.

FAQ

What is the maximum input voltage the 74AHC1G126GV-Q100 can tolerate?

The device accepts input voltages up to 5.5 V regardless of VCC level, verified per datasheet Table 5 (Limiting Values) and Table 6 (Recommended Operating Conditions). This overvoltage tolerance allows safe interfacing with 5 V signals even when powered from 3.3 V or 2.5 V rails, eliminating external protection components in mixed-voltage designs.

Does the 74AHC1G126GV-Q100 support hot-swap operation?

Yes - its overvoltage-tolerant inputs and latch-up immunity (>100 mA per JESD78 Class II Level A) enable safe insertion into live backplanes or modular ECUs. The device remains functional during VCC ramp-up/down sequences, and no power sequencing constraints are imposed between VCC and input signals.

How does the 3-state disable timing affect CAN bus arbitration?

With tdis ≤ 11.0 ns at VCC = 5 V and CL = 50 pF, the output transitions to high-impedance faster than CAN bit timing windows (≥100 ns at 1 Mbps), preventing bus contention during node reconfiguration. This ensures deterministic arbitration behavior when multiple nodes share a common CAN transceiver enable line.

Can this buffer drive a 50 pF load at 5 V while maintaining AEC-Q100 compliance?

Yes - datasheet Table 8 confirms tpd ≤ 7.5 ns and VOL ≤ 0.55 V at IO = 8 mA, VCC = 5 V, CL = 50 pF across −40 °C to +125 °C. All static and dynamic parameters in that condition meet AEC-Q100 Grade 1 requirements, including supply current (ICC ≤ 40 μA) and output leakage (IOZ ≤ ±10 μA).