Nexperia USA Inc. 74AHC2G125DC,125

Overview

74AHC2G125DC,125 from Nexperia is a dual CMOS buffer/line driver with 3-state outputs, controlled by independent active-low enable inputs (1OE, 2OE). It operates from 2.0 V to 5.5 V, features overvoltage-tolerant inputs up to 5.5 V, and delivers symmetrical output impedance and balanced propagation delays (e.g., 3.4 ns typ at VCC = 5.0 V, CL = 15 pF). It serves as a level-translating bus interface in mixed-voltage digital systems such as industrial I/O expansion modules.

For engineers reviewing the 74AHC2G125DC,125 datasheet, 74AHC2G125DC,125 pinout, 74AHC2G125DC,125 application, or 74AHC2G125DC,125 equivalent, key selection criteria include its dual-channel 3-state drive capability, wide supply range, TTL-compatible input threshold option via AHCT variant, and VSSOP8 package suitability for space-constrained PCB layouts.

Technical Context

This device implements two independent non-inverting buffers, each with dedicated active-low 3-state output control (1OE, 2OE), enabling bidirectional bus management without external logic. Its overvoltage-tolerant inputs allow safe interfacing between 3.3 V logic and 5 V buses, while symmetrical output drive supports clean signal integrity on shared lines.

The AHC family uses pure CMOS input thresholds (VIH ≥ 0.7×VCC, VIL ≤ 0.3×VCC), ensuring robust noise immunity across the full −40 °C to +125 °C operating range. Propagation delay (tpd), enable time (ten), and disable time (tdis) are tightly matched between channels, critical for synchronous data routing in timing-sensitive peripherals.

Key Specifications

Pinout & Package

VSSOP8 plastic very thin shrink small outline package (SOT765-1); 8 leads; body width 2.3 mm; pin 1 indicator located on lower left corner below marking code.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 3-state buffer applications.

Compared with 74AHC2G125DC,125, the AHCT variant offers deterministic input switching points for TTL legacy compatibility, while the LVC variant extends voltage flexibility and drive strength at the cost of pinout incompatibility and increased quiescent current.

Availability

74AHC2G125DC,125 is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded microcontroller bus expansion, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC2G125DC,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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions optimized for reliability and energy efficiency.

The 74AHC series targets high-speed, low-power digital interface applications in industrial, computing, and communications equipment, emphasizing robustness across wide voltage and temperature ranges.

FAQ

Can 74AHC2G125DC,125 operate with VCC = 2.5 V?

Yes. The device is fully specified from 2.0 V to 5.5 V. At VCC = 2.5 V, VIH is guaranteed ≥1.75 V and VIL ≤0.75 V per datasheet Table 7, and propagation delay increases to 8.0 ns (max) at CL = 15 pF. All DC and AC parameters remain valid within this range.

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

The datasheet specifies performance up to 50 pF (Table 8), with tpd = 7.5 ns (max) at VCC = 5.5 V. Driving >50 pF may increase propagation delay and edge rate degradation; for 100 pF loads, add series termination or verify timing margins using the CPD = 9 pF value in dynamic power calculations.

Is the 74AHC2G125DC,125 pin-compatible with the 74AHCT2G125DC,125?

Yes - both share identical VSSOP8 (SOT765-1) pinout and footprint. The only functional difference is input threshold behavior: AHC uses CMOS-ratio thresholds, AHCT uses fixed TTL thresholds. No PCB redesign is needed when swapping between them.

Does this device require external pull-up or pull-down resistors on OE pins?

No. The OE inputs are CMOS-compatible with rail-to-rail voltage recognition and negligible leakage (<2.0 μA). However, to prevent floating states during power-up or reset, tie OE to VCC via a 10 kΩ resistor if active-low assertion is not actively driven by the host controller.