Nexperia USA Inc. 74LVC1GX04GV-Q100H

Overview

74LVC1GX04GV-Q100 from Nexperia is an automotive-grade crystal oscillator driver IC designed for Pierce oscillator configurations. It operates across 1.65 V to 5.5 V supply, supports overvoltage-tolerant 5.5 V inputs, delivers ±24 mA output drive at 3.0 V, and features IOFF partial power-down protection. It is qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C) and used in engine control units, ADAS clock trees, and infotainment system timing references.

For engineers reviewing the 74LVC1GX04GV-Q100 datasheet, 74LVC1GX04GV-Q100 pinout, 74LVC1GX04GV-Q100 application, or 74LVC1GX04GV-Q100 equivalent, key selection criteria include its dual-output crystal driver topology (X1/X2/Y), IOFF-enabled safe power-down behavior, wide VCC range enabling mixed-voltage interface translation, and guaranteed operation up to +125 °C in automotive environments.

Technical Context

This device implements a CMOS inverter-based crystal driver with two functional outputs: X2 (inverted input path) and Y (non-inverted buffered output). Its internal structure enables direct integration into fundamental-mode Pierce oscillators, where X1 serves as the high-impedance input node connected to one crystal terminal, X2 drives the other crystal terminal via external biasing, and Y provides a clean, low-jitter buffered clock signal decoupled from crystal loading.

The IOFF circuit actively disables the Y output when VCC = 0 V, blocking backflow current and preventing latch-up during partial power-down - a critical requirement for domain-isolated automotive ECUs. Input thresholds scale with VCC (VIH ≥ 0.8VCC, VIL ≤ 0.2VCC at +125 °C), ensuring robust noise immunity across temperature and supply variations.

Key Specifications

Pinout & Package

74LVC1GX04GV-Q100 uses the SC-74 (SOT457) plastic surface-mount package: 6-pin, 1.7 mm body width, 0.95 mm height, lead pitch 0.95 mm. Pin 1 index located below marking "VX4" at lower-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar crystal driver applications.

Compared with 74LVC1GX04GW-Q100, the GV variant trades marginally lower thermal derating for 25% smaller PCB area; compared with SN74LVC1G04QDRYRQ1, it delivers purpose-built oscillator functionality, guaranteed automotive qualification, and integrated IOFF - eliminating design risk in safety-relevant timing paths.

Availability

74LVC1GX04GV-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and infotainment real-time clock circuits requiring stable component supply across extended automotive temperature ranges and long product lifecycles.

Supply support for 74LVC1GX04GV-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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions, with deep expertise in automotive-qualified components and advanced packaging.

The 74LVC1GX04-Q100 belongs to Nexperia's automotive logic family, engineered specifically for robust, low-power crystal oscillator implementation in safety-critical vehicle subsystems - prioritizing thermal resilience, IOFF protection, and AEC-Q100 compliance over generic logic performance.

FAQ

What crystal load capacitance is supported by the 74LVC1GX04GV-Q100?

The device supports standard parallel-load crystals from 12 pF to 20 pF, as confirmed by its 5.0 pF input capacitance and recommended Pierce oscillator design using external C1/C2 capacitors. The datasheet provides explicit formulas to calculate C1 and C2 values based on the crystal's specified CL and board stray capacitance (Cs = 5 pF), ensuring accurate frequency tuning and reliable start-up across temperature.

Can the 74LVC1GX04GV-Q100 drive a 5 V crystal oscillator circuit while powered from 3.3 V?

Yes - its inputs tolerate up to 5.5 V regardless of VCC, and its outputs swing rail-to-rail. When VCC = 3.3 V, the Y output delivers VOH ≥ 2.3 V and VOL ≤ 0.55 V at 24 mA, meeting TTL and 3.3 V CMOS logic thresholds. This allows direct interfacing with 5 V systems while maintaining low-power operation, provided the crystal itself is rated for 3.3 V excitation.

How does the IOFF feature protect the device during partial power-down?

When VCC drops to 0 V, the IOFF circuit disables the Y output driver stage, limiting leakage current to ≤±2 μA. This prevents reverse current flow from live downstream circuits (e.g., 5 V clock distribution nets) into the unpowered IC, avoiding latch-up, data corruption, or damage to adjacent powered domains - a mandatory requirement for ISO 26262-compliant power architecture.

Is external feedback resistor Rf required for stable oscillation?

Yes - a 1 MΩ feedback resistor between Y and X1 is mandatory per the recommended Pierce oscillator configuration (Fig. 9). It biases the internal inverter in its linear region, establishing proper DC operating point for gain and ensuring reliable oscillation start-up. Omitting Rf results in undefined biasing, potential failure to oscillate, or excessive crystal drive leading to aging or fracture.