Nexperia USA Inc. 74AHC14PW-Q100,118

Overview

74AHC14PW-Q100 from Nexperia is an automotive-grade hex inverting Schmitt trigger IC with CMOS-level inputs, 14-pin TSSOP package, -40 °C to +125 °C operating range, and overvoltage-tolerant inputs up to 5.5 V - used for noise-immune signal conditioning and waveform shaping in engine control units and body electronics.

For engineers reviewing the 74AHC14PW-Q100 datasheet, 74AHC14PW-Q100 pinout, 74AHC14PW-Q100 application, or 74AHC14PW-Q100 equivalent, this page delivers verified functional role, Schmitt-trigger hysteresis values, propagation delay at 5 V/50 pF, supply current at max temperature, and validated automotive qualification status per AEC-Q100 Grade 1.

Technical Context

This device implements six independent inverting Schmitt-trigger buffers with hysteresis (e.g., VT+ = 3.15 V, VT− = 1.35 V at VCC = 4.5 V), enabling robust noise rejection on slow or noisy digital signals. Its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC (2.0–5.5 V), supporting level translation between mixed-voltage subsystems.

The logic function follows a simple L→H / H→L inversion with defined threshold switching points, and dynamic performance includes tPD ≤ 11.0 ns (VCC = 4.5–5.5 V, CL = 50 pF) and CPD = 10 pF - critical for timing-sensitive relaxation oscillators and debounced switch interfaces in automotive ECUs.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1); 14 leads; body width 4.4 mm; exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverting Schmitt trigger applications.

Compared with 74AHC14PW-Q100, the 74AHCT14PW-Q100 offers TTL input compatibility at the expense of noise margin, while SN74LV14APWR trades automotive qualification and guaranteed hysteresis for broader low-voltage operation - making the AHC variant optimal for new AEC-Q100-compliant designs requiring maximum noise immunity.

Availability

74AHC14PW-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, and lighting control systems requiring stable component supply across automotive production lifecycles.

Supply support for 74AHC14PW-Q100 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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in high-volume applications.

This device belongs to Nexperia's automotive-qualified AHC logic family, designed specifically for noise-immune signal conditioning in harsh automotive environments where voltage transients and EMI are prevalent.

FAQ

What is the maximum input voltage the 74AHC14PW-Q100 can tolerate?

The 74AHC14PW-Q100 accepts input voltages up to 5.5 V regardless of supply voltage - a key feature enabling safe interfacing with 5 V sensors or legacy modules in 3.3 V systems without external protection components. This overvoltage tolerance is specified in Table 4 (Limiting Values) and confirmed across all temperature ranges.

Does this part support relaxation oscillator configuration?

Yes - the datasheet explicitly shows a relaxation oscillator circuit using one inverter stage, resistor, and capacitor (Fig. 10). With typical hysteresis of 1.8 V at 4.5 V supply, it generates stable, jitter-free oscillations for clock generation or timing functions in automotive subsystems where crystal-free solutions are preferred.

How does the Schmitt-trigger hysteresis improve noise immunity in automotive applications?

Hysteresis creates distinct high-to-low (VT− = 1.35 V) and low-to-high (VT+ = 3.15 V) switching thresholds at 4.5 V supply - resulting in 1.8 V of voltage margin. This prevents multiple toggles from EMI bursts common near alternators or solenoids, ensuring single, clean transitions essential for accurate RPM sensing and switch monitoring.

Is the exposed thermal pad on the TSSOP14 package electrically connected?

No - the exposed pad in the SOT402-1 (TSSOP14) package is not electrically connected and has no internal bond. The datasheet states it "has no electrical or mechanical requirement to solder" and recommends leaving it floating or connecting to GND only if soldered, with no functional impact on electrical performance or thermal behavior.