Nexperia USA Inc. 74AHCT04D,118

Overview

74AHCT04D,118 from Nexperia is a hex inverter IC with TTL-compatible inputs, 14-pin SO14 package, −40 °C to +125 °C operating range, 3.0 ns typical propagation delay at 5 V/15 pF, and ±8 mA output drive-used for logic-level inversion and signal conditioning in industrial control interfaces and microcontroller I/O expansion.

For engineers reviewing the 74AHCT04D,118 datasheet, 74AHCT04D,118 pinout, 74AHCT04D,118 application, or 74AHCT04D,118 equivalent, key selection criteria include TTL input threshold compatibility (VIH = 2.0 V min), rail-to-rail CMOS output swing, balanced tPLH/tPHL timing, and SO14 thermal derating behavior above 100 °C.

Technical Context

This device implements six independent CMOS inverter stages with Schottky-clamped TTL-level inputs, enabling direct interfacing with legacy LSTTL logic without level shifters. Its input structure accepts VI up to 5.5 V regardless of VCC, and outputs switch rail-to-rail between GND and VCC.

Propagation delay is tightly matched across all six channels (Δtpd ≤ 0.5 ns typical), supporting synchronous signal inversion in clock distribution, bus buffering, and address decoding where skew-sensitive timing is required.

Key Specifications

Pinout & Package

74AHCT04D,118 uses the SOT108-1 (SO14) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, and JEDEC MS-012 compliant footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter applications.

Compared with SN74AHCT04DR and 74LVC04AD,118, the 74AHCT04D,118 delivers tighter propagation delay matching across temperature, guaranteed TTL input thresholds, and superior ESD robustness - making it optimal for legacy 5 V system upgrades requiring zero-tolerance timing and interoperability.

Availability

74AHCT04D,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller GPIO buffering, and legacy system bus interface requiring stable component supply across extended temperature ranges.

Supply support for 74AHCT04D,118 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 leading Dutch semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global manufacturing and R&D centers.

The 74AHCT series targets industrial and automotive-adjacent applications demanding TTL compatibility, wide temperature operation, and robust ESD performance - bridging legacy and modern 5 V logic systems.

FAQ

Is 74AHCT04D,118 compatible with 3.3 V logic inputs?

No - the 74AHCT04D,118 has fixed TTL input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and requires VCC = 4.5–5.5 V. It will not reliably recognize 3.3 V HIGH signals as valid logic HIGH. For 3.3 V systems, use the 74AHC04D,118 or 74LVC04AD,118 instead.

What is the maximum capacitive load this device can drive at 50 MHz?

At 50 MHz, CL must remain ≤ 25 pF to maintain tpd ≤ 7.0 ns and avoid excessive dynamic power (PD = CPD × VCC² × fi × N). With CPD = 13.9 pF and VCC = 5.0 V, driving >25 pF risks timing violations and output waveform degradation due to increased rise/fall times.

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

No - unused inputs may be tied directly to VCC or GND. The device features CMOS input structure with negligible leakage (<0.1 μA), so floating inputs are prohibited due to risk of metastability and increased ICC. Always terminate all six inputs.

Can 74AHCT04D,118 operate with VCC = 4.0 V?

No - the 74AHCT04D,118 is specified only for VCC = 4.5–5.5 V per JEDEC 7-A and Nexperia's recommended operating conditions. At 4.0 V, VIH and VOH parameters fall outside guaranteed limits, risking incorrect logic interpretation and marginal output drive strength.