Texas Instruments SN74ACT00NG4

Overview

SN74ACT00NG4 from Texas Instruments is a quadruple 2-input positive-NAND gate IC operating at 4.5V–5.5V V_CC, with TTL-compatible inputs, 8ns maximum propagation delay at 5V, and 24mA output drive capability. It performs Boolean Y = A•B logic in digital control, level-shifting, and signal conditioning circuits for industrial PLC I/O modules.

For engineers reviewing the SN74ACT00NG4 datasheet, SN74ACT00NG4 pinout, SN74ACT00NG4 application, or SN74ACT00NG4 equivalent, this page delivers verified package mapping (PDIP-14), functional pin roles, switching and DC electrical specs, real-world use cases, and two validated alternative parts - all extracted from TI's official SCAS523F revision F data sheet.

Technical Context

The SN74ACT00NG4 implements four independent NAND gates in positive logic, each with identical input thresholds (V_IL = 0.8V, V_IH = 2.0V) and rail-to-rail output swing (V_OL ≤ 0.5V at 24mA, V_OH ≥ 3.7V at –24mA). Its ACT logic family ensures compatibility with both TTL and CMOS interfaces while maintaining low power consumption (I_CC ≤ 20µA at 5.5V).

Designed for robust operation across –40°C to +85°C, it features input voltage tolerance up to 5.5V regardless of V_CC, enabling mixed-voltage interfacing. The device requires all unused inputs tied to V_CC or GND per TI SCBA004 guidance to prevent floating-induced malfunction.

Key Specifications

Pinout & Package

SN74ACT00NG4 uses a 14-pin plastic dual in-line package (PDIP, N package), body size 19.30mm × 6.35mm, with through-hole mounting and industry-standard pin spacing (2.54mm pitch). Pin 1 is located at the top-left corner with notch or dot marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC00N and SN74LS00N, the SN74ACT00NG4 uniquely combines TTL compatibility, 24mA drive, and 8ns speed - making it the only choice for industrial 5V logic requiring robust interfacing and timing-critical NAND functions.

Availability

SN74ACT00NG4 is available at Aetrix Electronics and suitable for industrial control logic, legacy system interface, power-on reset sequencing, and LED driver logic requiring stable component supply and long-term production continuity.

Supply support for SN74ACT00NG4 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of experience in industrial-grade logic families.

The SN74ACT00NG4 belongs to TI's advanced CMOS TTL-compatible (ACT) logic series, designed specifically for high-speed, noise-immune 5V digital systems in industrial automation, test equipment, and legacy interface applications.

FAQ

What is the operating temperature range for SN74ACT00NG4?

The SN74ACT00NG4 is rated for industrial operation from –40°C to +85°C. This range is confirmed in Section 4.2 "Recommended Operating Conditions" of TI's SCAS523F datasheet and applies specifically to the PDIP (N) package variant. It ensures reliability in factory-floor environments, motor control cabinets, and outdoor instrumentation enclosures where ambient temperatures fluctuate widely.

Does SN74ACT00NG4 support mixed-voltage interfacing?

Yes, SN74ACT00NG4 supports mixed-voltage interfacing because its inputs tolerate voltages up to 5.5V regardless of V_CC level (Section 4.1 Absolute Maximum Ratings). This allows safe connection to 5V control signals even when V_CC is nominally 5V, and enables robust interfacing with higher-voltage sensors or legacy peripherals without external clamping circuitry.

Can unused inputs on SN74ACT00NG4 be left floating?

No, unused inputs on SN74ACT00NG4 must never be left floating. Per TI's SCBA004 application report cited in Section 4.2, all unused inputs must be tied to V_CC or GND to prevent undefined logic states, increased power consumption, and potential oscillation. The SN74ACT00NG4 datasheet explicitly mandates this in Section 7.2.1 Layout Guidelines.

What is the maximum output current per channel for SN74ACT00NG4?

The SN74ACT00NG4 provides ±24mA maximum output current per channel under recommended operating conditions (Section 4.2). Specifically, I_OH = –24mA and I_OL = +24mA at V_CC = 4.5V–5.5V and T_A = –40°C to +85°C. This rating is validated across the full temperature range and enables direct drive of LEDs, small relays, or multiple downstream logic inputs.

Is SN74ACT00NG4 pin-compatible with SN74HC00N?

Yes, SN74ACT00NG4 and SN74HC00N share identical PDIP-14 pinouts and Boolean functionality (quadruple 2-input NAND), but they are not functionally interchangeable without design review. SN74ACT00NG4 offers higher drive strength (±24mA vs ±4mA), faster speed (8ns vs 15ns), and TTL-compatible inputs - differences that impact signal integrity, fanout, and voltage translation requirements in the target circuit.