Nexperia USA Inc. 74HCT08D,652

Overview

74HCT08D,652 from Nexperia is a quad 2-input AND gate IC with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), 4.5–5.5 V operating supply range, and SO14 (SOT108-1) package. It delivers propagation delay of 14–36 ns across temperature (−40 °C to +125 °C), supports 25 mA output drive, and integrates input clamp diodes for overvoltage-tolerant interfacing in industrial control logic stages.

For engineers reviewing the 74HCT08D,652 datasheet, 74HCT08D,652 pinout, 74HCT08D,652 application, or 74HCT08D,652 equivalent, key selection criteria include TTL-level input compatibility, SO14 thermal derating (10.1 mW/K above 100 °C), guaranteed operation up to +125 °C, and static output voltage margins (VOH ≥ 3.7 V, VOL ≤ 0.4 V at IO = ±4 mA).

Technical Context

This device implements four independent 2-input AND gates in a single monolithic CMOS structure, with inputs designed to accept standard TTL logic levels-enabling direct interface with legacy 5 V TTL families without level-shifting. Each gate features symmetric input structure and rail-to-rail output swing capability under specified load conditions.

Its functional behavior follows strict Boolean AND logic (nY = nA · nB), with propagation delays characterized across VCC (4.5–5.5 V), temperature (−40 °C to +125 °C), and capacitive load (CL = 50 pF). Input clamp diodes allow safe use with current-limiting resistors when interfacing to signals exceeding VCC.

Key Specifications

Pinout & Package

74HCT08D,652 uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, and surface-mount construction rated for reflow soldering per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT08DR and MC74HCT08ADR2G, the 74HCT08D,652 provides tighter propagation delay consistency (14–36 ns vs. 13–35 ns and 15–38 ns), higher guaranteed HBM ESD rating (class 2 >2000 V), and broader industrial temperature validation (−40 °C to +125 °C with full static/dynamic characterization).

Availability

74HCT08D,652 is available at Aetrix Electronics and suitable for industrial PLC logic modules, automotive body control units, legacy system interface adapters, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for 74HCT08D,652 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 discrete components with emphasis on reliability and manufacturability.

The 74HCT08D,652 belongs to Nexperia's 74HCT logic family, engineered specifically for robust 5 V TTL-compatible interfacing in industrial and automotive environments where wide temperature operation and ESD resilience are mandatory.

FAQ

Can 74HCT08D,652 operate at 3.3 V supply?

No. The 74HCT08D,652 is specified only for 4.5 V to 5.5 V operation per its recommended conditions table. At 3.3 V, input thresholds (VIH = 2.0 V min) become non-functional relative to VCC, and output drive degrades below specification. Use 74HC08 or 74LVC08 for 3.3 V systems.

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

The 74HCT08D,652 is characterized up to 50 pF load capacitance per output, with propagation delay and transition time specifications guaranteed under that condition. Driving >50 pF may increase tpd beyond 36 ns and cause excessive ringing; add series termination or buffer stages for heavier loads.

Does the SO14 package require thermal pad soldering?

No. The SOT108-1 package has no exposed thermal pad. Its thermal performance relies on PCB copper area connected to pins 7 (GND) and 14 (VCC). For continuous 500 mW dissipation, use ≥250 mm² of 2-oz copper on inner layers tied to those pins via multiple vias.

How does input clamping affect interfacing with 12 V sensors?

Clamp diodes allow safe 12 V input when a series resistor limits current to <20 mA (per IIK absolute max). For example, a 390 Ω resistor yields ~18 mA at 12 V, staying within rating. Without the resistor, permanent damage occurs due to forward-biasing the diode beyond its current limit.