Nexperia USA Inc. 74AHC1G02GV/C4H

Overview

74AHC1G02GV/C4H from Nexperia is a single 2-input CMOS NOR gate in SC-74A (SOT753) package, operating from 2.0 V to 5.5 V supply, with overvoltage-tolerant inputs up to 5.5 V, symmetrical output impedance, and guaranteed operation from –40 °C to +125 °C. It serves as a level-translating logic gate in mixed-voltage digital interfaces such as I²C bus buffering, microcontroller GPIO expansion, and power management enable sequencing.

For engineers reviewing the 74AHC1G02GV/C4H datasheet, 74AHC1G02GV/C4H pinout, 74AHC1G02GV/C4H application, or 74AHC1G02GV/C4H equivalent, this page delivers verified functional behavior, validated pin mapping for SOT753, real-world timing under 15 pF/50 pF loads, thermal derating guidance, and direct alternatives with TTL- vs. CMOS-input compatibility differences.

Technical Context

This device implements a standard 2-input NOR Boolean function with true complementary CMOS output stage, enabling rail-to-rail switching and balanced rise/fall times. Its overvoltage-tolerant inputs allow safe interfacing between 3.3 V logic domains and 5 V peripherals without external clamping.

It supports high-noise-immunity operation via hysteresis-free but robust VIH/VIL thresholds-1.5 V min VIH at VCC = 2.0 V and 3.85 V min VIH at VCC = 5.5 V-and exhibits low static current (≤40 μA at VCC = 5.5 V, –40 °C to +125 °C).

Key Specifications

Pinout & Package

SC-74A (SOT753) plastic surface-mounted package: 5-terminal, 1.3 mm × 1.7 mm body, 0.65 mm pitch, 0.9 mm height, side-wettable flanks not applicable.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input NOR gate applications.

Compared with 74AHC1G02GV/C4H, the 74AHCT1G02GV offers seamless integration with 5 V TTL sources but sacrifices some noise margin at low VCC, while the SN74LVC1G02DBVR provides broader voltage support and stronger drive at the cost of mechanical incompatibility and increased quiescent current above 3.3 V.

Availability

74AHC1G02GV/C4H is available at Aetrix Electronics and suitable for industrial automation, USB-C power delivery, automotive body electronics, and low-power sensor aggregation requiring stable component supply across extended temperature ranges.

Supply support for 74AHC1G02GV/C4H 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 specializing in high-performance, high-reliability logic, analog, and MOSFET solutions for industrial, automotive, and consumer markets.

The 74AHC1G02 belongs to Nexperia's AHC logic family, engineered for low-power, high-speed CMOS operation in space-constrained, thermally demanding applications where voltage translation and robust ESD performance are critical.

FAQ

Is 74AHC1G02GV/C4H pin-compatible with 74AHCT1G02GV?

Yes - both share identical SC-74A (SOT753) package and pinout: Pin 1 = B, Pin 2 = A, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC. The only functional difference is input threshold logic: AHC uses CMOS-compatible VIH (≥70% VCC), while AHCT uses TTL-compatible VIH (≥2.0 V), making them mechanically interchangeable but electrically distinct in mixed-signal contexts.

What is the maximum capacitive load this device can drive reliably?

The datasheet specifies timing parameters up to 50 pF load capacitance, with tpd = 7.5 ns max at VCC = 4.5 V. Driving >50 pF will increase propagation delay nonlinearly and may cause marginal setup/hold timing in synchronous systems; for >100 pF loads, add a series resistor (22–47 Ω) near the output to damp ringing and maintain signal integrity.

Can this NOR gate operate at 1.8 V supply?

No - the absolute minimum recommended VCC is 2.0 V per Table 6. At 1.8 V, VIH thresholds fall below specification (e.g., VIH min = 1.5 V at VCC = 2.0 V), resulting in unreliable HIGH recognition and potential logic contention; for 1.8 V systems, consider the SN74LVC1G02 or 74LVC1G02 variants instead.

Does this device require external pull-up or pull-down resistors on unused inputs?

No - unused inputs must be tied to VCC or GND to prevent floating states and excessive ICC. Leaving inputs unconnected causes undefined logic states, increased power consumption, and potential oscillation due to noise coupling; internal protection diodes do not provide sufficient biasing for stable DC operation.