Nexperia USA Inc. 74AHCT2G125DC,125

Overview

74AHCT2G125DC,125 from Nexperia is a dual 3-state buffer/line driver with TTL-compatible inputs and overvoltage-tolerant inputs up to 5.5 V, designed for level translation in mixed-voltage systems. It operates from 4.5 V to 5.5 V, delivers propagation delay as low as 3.4 ns (VCC = 5 V, CL = 15 pF), supports -40 °C to +125 °C ambient range, and features symmetrical output impedance for clean signal integrity in bus-driving applications.

For engineers reviewing the 74AHCT2G125DC,125 datasheet, 74AHCT2G125DC,125 pinout, 74AHCT2G125DC,125 application, or 74AHCT2G125DC,125 equivalent, key selection criteria include TTL-level input compatibility, 3-state enable timing (enable/disable < 8.5 ns at 5 V), VSSOP8 package footprint constraints, and guaranteed operation across industrial temperature extremes without derating.

Technical Context

The 74AHCT2G125DC,125 implements two independent non-inverting buffers, each with active-low 3-state output enable (1OE, 2OE). Its TTL-input threshold (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensures direct interfacing with legacy 5 V logic families while maintaining CMOS output drive strength.

Dynamic behavior is characterized by matched tPLH/tPHL propagation delays, tightly controlled enable/disable times (ten ≤ 8.5 ns, tdis ≤ 10.0 ns at VCC = 5 V, CL = 50 pF), and low power dissipation capacitance (CPD = 11 pF per buffer), enabling high-speed, low-noise data routing in space-constrained PCB layouts.

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 'C25'.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT2G125DC,125, the DP variant trades space efficiency for thermal headroom, while the SN74LVC2G125DCUR sacrifices TTL compatibility for broader voltage scalability - making the DC version optimal for compact, mixed-voltage 5 V bus interfaces requiring drop-in legacy interoperability.

Availability

74AHCT2G125DC,125 is available at Aetrix Electronics and suitable for industrial bus interface, microcontroller GPIO expansion, legacy system upgrade interface, and test equipment signal conditioning requiring stable component supply across extended temperature ranges and long-lifecycle programs.

Supply support for 74AHCT2G125DC,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 74AHCT2G125DC,125 belongs to Nexperia's advanced logic family, engineered specifically for robust level translation and bus driving in industrial, automotive (non-safety), and computing applications demanding wide temperature operation and noise immunity.

FAQ

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

Yes - both share identical VSSOP8 (SOT765-1) pinout, supply voltage range, and functional behavior. The sole difference is input threshold: AHCT uses TTL-compatible inputs (VIH ≥ 2.0 V), while AHC uses CMOS inputs (VIH ≥ 3.85 V at VCC = 5.5 V). Swapping requires verifying source logic family compatibility.

What is the maximum capacitive load this device can drive while maintaining specified timing?

The datasheet specifies timing parameters up to 50 pF load capacitance (CL) at VCC = 4.5–5.5 V. Propagation delay increases to 7.5 ns (max) and disable time to 10.0 ns (max) at CL = 50 pF. For loads exceeding 50 pF, timing margins degrade predictably per the 11. Dynamic Characteristics table - design validation is required beyond that point.

Does the 74AHCT2G125DC,125 require external pull-up resistors on its output enable pins?

No - the 1OE and 2OE inputs are active-low CMOS inputs with leakage current ≤ 2.0 μA across temperature. They may be driven directly from MCU GPIO or logic gates. Pull-ups are unnecessary unless system-level fail-safe behavior (default-disabled outputs) is required during power-up or reset.

Can this device operate reliably at 4.5 V supply with full -40 °C to +125 °C specification?

Yes - Table 6 confirms recommended operating conditions include VCC = 4.5 V to 5.5 V across the full -40 °C to +125 °C ambient range. All static and dynamic specifications (VOH, VOL, tpd, ten, tdis) are guaranteed at 4.5 V minimum supply within that temperature span, with no derating required.