Nexperia USA Inc. 74VHCT08PW,118

Overview

74VHCT08PW,118 from Nexperia is a quad 2-input AND gate IC operating at 4.5–5.5 V supply, delivering TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V), propagation delay as low as 3.2 ns (CL = 15 pF), and rated for -40 °C to +125 °C industrial temperature range in TSSOP14 package. It serves as a logic-level combiner in digital control signal routing, bus gating, and enable-path logic within microcontroller peripheral interfaces.

For engineers reviewing the 74VHCT08PW,118 datasheet, 74VHCT08PW,118 pinout, 74VHCT08PW,118 application, or 74VHCT08PW,118 equivalent, this page delivers verified pin functions, real-world timing behavior under 15–50 pF loads, TTL/CMOS interoperability details, thermal derating data for TSSOP14, and validated drop-in alternatives for industrial control and embedded interface designs.

Technical Context

The 74VHCT08PW,118 implements four independent 2-input AND gates using high-speed Si-gate CMOS technology compliant with JEDEC JESD7-A. Its inputs accept TTL logic levels while outputs drive CMOS loads, enabling seamless interfacing between legacy TTL and modern low-power CMOS systems.

Each gate features Schmitt-trigger action on all inputs, supports input voltages up to 7.0 V independent of VCC, and maintains balanced tPLH/tPHL propagation delays across temperature extremes. The device operates with static current below 2.0 μA at 5.5 V and dynamic power dissipation modeled via CPD = 12.0 pF.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1); 14-lead, 4.4 mm body width, 0.65 mm lead pitch; exposed pad not electrically connected unless tied to GND for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AHCT08PW and 74LVC08PW, the 74VHCT08PW,118 uniquely balances TTL input compatibility, Schmitt-trigger noise immunity, and 125 °C operation - making it the sole option among the three qualified for combined industrial temperature and legacy logic interface requirements.

Availability

74VHCT08PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller peripheral enable logic, legacy TTL-to-CMOS bus interface, and motor driver safety interlock applications requiring stable component supply across extended temperature ranges.

Supply support for 74VHCT08PW,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 global semiconductor expert headquartered in Nijmegen, Netherlands, specializing in high-performance logic, discrete, and MOSFET solutions for industrial, automotive, and consumer markets.

The 74VHCT series targets industrial-grade logic interfacing where TTL compatibility, extended temperature operation, and robust ESD performance are mandatory - designed specifically for reliability-critical control and signal conditioning in harsh environments.

FAQ

Can 74VHCT08PW,118 operate at 3.3 V supply?

No. The 74VHCT08PW,118 is specified only for 4.5–5.5 V operation per Table 5. At 3.3 V, VIH minimum (2.0 V) exceeds 60% of VCC, violating input threshold ratio requirements and risking unreliable logic recognition. Use 74LVC08PW instead for 3.3 V systems.

Does the TSSOP14 package require soldering the exposed pad?

No. The exposed thermal pad in SOT402-1 has no electrical function per datasheet note (1). If soldered, it must remain floating or connect to GND solely for thermal improvement - no electrical continuity is required or guaranteed for device operation.

What is the maximum capacitive load for guaranteed timing performance?

The datasheet specifies timing parameters up to CL = 50 pF (Table 7). Beyond 50 pF, propagation delay increases linearly per CPD = 12.0 pF; for example, at CL = 100 pF and f_i = 1 MHz, dynamic power rises by ~72 μW, and t_pd degrades beyond 10.0 ns worst-case.

How does Schmitt-trigger action improve noise immunity?

Schmitt-trigger inputs provide 0.3–0.5 V hysteresis between VIH and VIL thresholds. This prevents multiple transitions on slowly rising/falling signals (e.g., mechanical switch bounce or long PCB traces), ensuring one clean logic edge per input event - critical for reliable interrupt generation and state machine control.