Nexperia USA Inc. 74AHC1G32GV,125

Overview

74AHC1G32GV,125 from Nexperia is a single 2-input OR gate in SC-74A (SOT753) package, operating from 2.0 V to 5.5 V supply, with CMOS-level inputs, overvoltage-tolerant inputs up to 5.5 V, and guaranteed operation from –40 °C to +125 °C. It serves as a level-translating logic buffer in mixed-voltage I/O interfaces of microcontroller peripheral expansion circuits.

For engineers reviewing the 74AHC1G32GV,125 datasheet, 74AHC1G32GV,125 pinout, 74AHC1G32GV,125 application, or 74AHC1G32GV,125 equivalent, this device is selected for low-power, high-noise-immunity discrete logic functions where input voltage translation between 3.3 V and 5 V domains is required without external level shifters.

Technical Context

This OR gate implements standard positive-logic summation (Y = A + B) with symmetrical output impedance and balanced propagation delays across temperature and voltage. Its overvoltage-tolerant inputs enable direct connection to 5.5 V signals while powered from as low as 2.0 V, eliminating need for external clamping diodes in mixed-supply systems.

Static characteristics include VIH(min) = 1.5 V at VCC = 2.0 V and VOL(max) = 0.36 V at IO = 8.0 mA and VCC = 4.5 V; dynamic performance delivers tpd = 3.2 ns (typ) at VCC = 5.0 V and CL = 15 pF, with CPD = 16 pF for dynamic power estimation.

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 - optimized for space-constrained PCB layouts and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input OR gate applications.

Compared with 74AHCT1G32GV,125, the AHC variant offers broader input threshold flexibility in low-VCC systems; versus SN74LVC1G32DBVR, it trades higher drive strength for essential overvoltage tolerance in heterogeneous supply architectures.

Availability

74AHC1G32GV,125 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical device power sequencing, and consumer IoT wake-up logic requiring stable component supply across extended temperature ranges and mixed-voltage designs.

Supply support for 74AHC1G32GV,125 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, energy-efficient logic, analog, and discrete components, with leadership in automotive-qualified and industrial-grade standard products.

The 74AHC series targets general-purpose, high-speed CMOS logic applications demanding wide supply range, low power, and robust mixed-signal interoperability in embedded control and interface subsystems.

FAQ

Is 74AHC1G32GV,125 pin-compatible with 74AHCT1G32GV,125?

Yes - both share identical SC-74A (SOT753) pinout: Pin 1 = B, Pin 2 = A, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC. The only functional difference is input threshold specification: AHC uses CMOS-level inputs (VIH ≥ 1.5 V @ VCC = 2.0 V), while AHCT uses TTL-level inputs (VIH ≥ 2.0 V). Physical replacement is mechanically and electrically valid if input voltage compatibility is verified.

Can 74AHC1G32GV,125 safely interface a 5 V sensor output to a 3.3 V microcontroller?

Yes - its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC level. When powered from 3.3 V, it correctly interprets 5 V sensor HIGH signals as logic HIGH and outputs a 3.3 V-compatible HIGH on Y, enabling direct level translation without external components or risk of latch-up.

What is the maximum capacitive load this OR gate can drive reliably?

At VCC = 5.0 V, the device maintains tpd ≤ 7.0 ns (max) with CL = 50 pF, and output drive is rated ±8.0 mA. For reliable signal integrity, keep total load (including trace capacitance and fanout) ≤ 50 pF. Exceeding this increases propagation delay and may cause marginal timing in high-speed paths, though functionality remains intact up to the absolute max rating of ±25 mA output current.

Does 74AHC1G32GV,125 support partial power-down or I/O isolation when VCC = 0 V?

No - it lacks Ioff or power-down isolation features. When VCC = 0 V, inputs remain overvoltage tolerant up to 5.5 V, but outputs enter high-impedance only if actively disabled (not applicable here); unpowered operation risks undefined output states and potential back-powering through I/O pins. Always power VCC before applying input signals in system-level sequencing.