Nexperia USA Inc. 74HC1G125GV-Q100H

Overview

74HC1G125GV-Q100 from Nexperia is a single-channel 3-state bus buffer/line driver optimized for automotive signal routing, featuring CMOS-level inputs, 2.0 V to 6.0 V supply operation, -40 °C to +125 °C temperature range, and AEC-Q100 Grade 1 qualification for under-hood ECUs and body control modules.

For engineers reviewing the 74HC1G125GV-Q100 datasheet, 74HC1G125GV-Q100 pinout, 74HC1G125GV-Q100 application, or 74HC1G125GV-Q100 equivalent, key selection criteria include input logic compatibility (CMOS), 3-state enable timing (t_en = 9 ns typ @ 4.5 V), output drive capability (±7.8 mA), and SC-74A (SOT753) package thermal derating (3.8 mW/K above 85 °C).

Technical Context

This device implements a non-inverting buffer with active-low 3-state output enable (OE), enabling bidirectional bus isolation in automotive serial communication interfaces and sensor signal conditioning paths. Its input clamp diodes allow safe interfacing to voltages exceeding V_CC when used with current-limiting resistors.

The 74HC1G125GV-Q100 uses standard HC logic thresholds (V_IH = 3.15 V min @ V_CC = 4.5 V; V_IL = 1.35 V max), delivers symmetrical output impedance, and maintains balanced propagation delays (t_pd = 10 ns typ A→Y @ 4.5 V, CL = 50 pF), supporting deterministic timing in safety-critical subsystems.

Key Specifications

Pinout & Package

SC-74A (SOT753) plastic surface-mounted package: 5-lead, 1.3 mm × 1.7 mm body, 0.65 mm lead pitch, 0.26 mm nominal thickness. Thermal resistance θ_JA = 260 K/W; total power dissipation derates linearly at 3.8 mW/K above 85 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC1G125GV-Q100, the 74HCT1G125GV-Q100 offers broader input compatibility with legacy hardware but sacrifices some noise margin, while the SN74LVC1G125DBVR provides faster switching at lower voltage but lacks automotive qualification and thermal robustness for under-hood deployment.

Availability

74HC1G125GV-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera interfaces, and infotainment system display routing requiring stable component supply across automotive production lifecycles.

Supply support for 74HC1G125GV-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 components for automotive, industrial, and consumer applications, with leadership in logic, MOSFETs, and ESD protection.

This device belongs to Nexperia's AEC-Q100-qualified 74HC logic family, engineered specifically for robust signal integrity and long-term reliability in automotive electronic control units operating across extreme ambient temperatures.

FAQ

What is the maximum clock frequency supported by the 74HC1G125GV-Q100?

The 74HC1G125GV-Q100 is not a clocked device-it has no internal clock and operates asynchronously. Its usable signal frequency depends on propagation delay (10 ns typ @ 4.5 V) and load capacitance. For clean edges into 50 pF, it reliably handles data rates up to ~30 MHz in point-to-point routing, assuming proper PCB layout and termination.

Can this buffer drive a 100 Ω transmission line directly?

No. With ±7.8 mA output drive at 4.5 V, the 74HC1G125GV-Q100 delivers only ~350 mV into 100 Ω-insufficient for standard LVCMOS signaling. It is designed for stub-loaded buses and short PCB traces (<10 cm), not controlled-impedance transmission lines. Use dedicated line drivers for such applications.

Does the input clamp diode allow continuous 12 V input when V_CC = 5 V?

Yes, but only with an external current-limiting resistor. The clamp diodes conduct when input exceeds V_CC + 0.5 V or falls below GND − 0.5 V. To stay within the ±20 mA absolute maximum input clamp current rating, a minimum 370 Ω resistor is required for sustained 12 V input at V_CC = 5 V.

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

t_dis = 31 ns (max @ 4.5 V) ensures rapid bus release during CAN dominant-to-recessive transitions. This meets ISO 11898-2 timing budgets for bit rates up to 1 Mbps, preventing extended bus occupation that could cause arbitration loss or error frames in multi-node networks.