NXP Semiconductors 74HCT00D,652

Overview

74HCT00D,652 from Nexperia is a quad 2-input NAND gate IC with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5.0 V), 4.5–5.5 V supply range, propagation delay of 12 ns (typ) at VCC = 4.5 V and CL = 50 pF, and SO14 (SOT108-1) package rated from –40 °C to +125 °C. It serves as a fundamental logic building block in digital control, interface buffering, and signal conditioning circuits where level translation between TTL and CMOS domains is required.

For engineers reviewing the 74HCT00D,652 datasheet, 74HCT00D,652 pinout, 74HCT00D,652 application, or 74HCT00D,652 equivalent, key selection considerations include its guaranteed TTL-level input compatibility, industrial temperature range, low static current (≤40 μA at VCC = 6.0 V), and SO14 package suitability for through-hole and reflow assembly in space-constrained industrial control boards.

Technical Context

The 74HCT00D,652 implements four independent 2-input NAND gates using silicon-gate CMOS technology with buffered outputs. Its input stage is designed to accept standard TTL voltage levels, enabling direct interfacing with legacy 5 V TTL logic without external level shifters.

Each gate features symmetrical output drive capability (±4.0 mA at VCC = 4.5 V), defined switching thresholds (VIH = 2.0 V, VIL = 0.8 V), and propagation delays tightly specified across temperature (12–29 ns over –40 °C to +125 °C). The device includes input clamp diodes for robustness against overvoltage transients.

Key Specifications

Pinout & Package

74HCT00D,652 is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads, 3.9 mm body width, and standard 1.27 mm lead pitch. Pin 1 is marked by a notch or index area on the package top edge.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad NAND gate applications.

Compared with SN74HCT00DR and MC74HCT00ADG, the 74HCT00D,652 offers the lowest typical propagation delay (12 ns), tighter input threshold tolerances, and MSL1 packaging for simplified handling-making it optimal for high-speed, high-reliability industrial control designs where timing margin and assembly simplicity are critical.

Availability

74HCT00D,652 is available at Aetrix Electronics and suitable for industrial motor control, PLC I/O modules, legacy system interface adapters, and power sequencing supervisors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HCT00D,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 specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74HCT00D,652 belongs to Nexperia's 74HCT logic family, engineered specifically for seamless interoperability between TTL and CMOS systems in rugged industrial environments-prioritizing noise immunity, wide operating temperature, and robust ESD performance.

FAQ

Is 74HCT00D,652 compatible with 3.3 V logic systems?

No. The 74HCT00D,652 is specified only for 4.5–5.5 V operation and requires TTL-level inputs (VIH ≥ 2.0 V). It lacks 3.3 V supply support or 3.3 V–tolerant inputs. For 3.3 V systems, consider the 74LVC00 or 74AHC00 families instead.

Can 74HCT00D,652 drive LED indicators directly?

Yes-each output can sink or source up to ±4.0 mA at VCC = 4.5 V, sufficient to drive low-current LEDs (e.g., 2 mA @ 1.8 V forward voltage) with appropriate series resistance. However, for higher-brightness or multi-LED loads, external drivers are recommended.

What is the significance of the "D,652" suffix in the part number?

The "D" denotes the SO14 (SOT108-1) package, and "652" is Nexperia's internal tape-and-reel ordering code indicating 2500 units per reel, standard packing, and RoHS-compliant finish-critical for automated SMT line setup and inventory planning.

Does 74HCT00D,652 require external pull-up or pull-down resistors on unused inputs?

Yes. Unused inputs must be tied to VCC or GND to prevent floating nodes, which cause increased ICC, noise susceptibility, and potential oscillation. Connecting to VCC via a 10 kΩ resistor is preferred for unused inputs to maintain defined logic state and minimize current draw.