Texas Instruments 74ACT11244PWR

Overview

74ACT11244PWR from Texas Instruments is an octal noninverting 3-state buffer/line driver designed for memory address driving, bus interfacing, and clock distribution in high-density digital systems. It features TTL-compatible inputs, 5-V supply operation (4.5–5.5 V), ±24-mA output drive, 1.5–9.9-ns propagation delay, and 500-mA latch-up immunity at 125°C.

For engineers reviewing the 74ACT11244PWR datasheet, 74ACT11244PWR pinout, 74ACT11244PWR application, or 74ACT11244PWR equivalent, key selection criteria include 3-state bus-driving capability, flow-through pinout for PCB layout optimization, EPIC CMOS process performance, center-pin V_CC/GND noise suppression, and TSSOP-24 packaging for space-constrained industrial logic designs.

Technical Context

The 74ACT11244PWR implements two independent 4-bit noninverting buffer sections (1A→1Y and 2A→2Y), each controlled by dedicated 3-state enable inputs (1OE, 2OE). Its EPIC (Enhanced-Performance Implanted CMOS) 1-µm process delivers rail-to-rail output swing with TTL-level input thresholds (V_IL = 0.8 V, V_VIH = 2.0 V) and low dynamic power consumption.

Designed for high-speed bus applications, it uses a flow-through architecture with input and output pins arranged on opposite sides of the TSSOP-24 package. Center-placed V_CC and GND pins minimize simultaneous switching noise, while 10-pF typical output capacitance and 9-pF disabled-state power-dissipation capacitance support clean signal integrity in dense layouts.

Key Specifications

Pinout & Package

TSSOP-24 (PW) package: 7.8-mm × 4.4-mm body, 1.2-mm max height, 0.65-mm lead pitch, exposed metal thermal pad (non-electrical), RoHS-compliant NIPDAU finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Compared with SN74ACT541PWR and 74LVC244APW, the 74ACT11244PWR uniquely provides dual independent 3-state enables in a 5-V TTL-compatible TSSOP-24 package-enabling flexible bus arbitration and legacy system integration without redesigning PCB layout or adding level shifters.

Availability

74ACT11244PWR is available at Aetrix Electronics and suitable for industrial control backplanes, memory subsystems, FPGA peripheral interfaces, and clock distribution networks requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ACT11244PWR 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 heritage in high-reliability industrial and automotive ICs.

The 74ACT11244PWR belongs to TI's advanced CMOS (ACT) logic family, engineered for high-speed, low-noise 5-V digital interfacing in mission-critical industrial and computing infrastructure.

FAQ

What is the operating voltage range for the 74ACT11244PWR?

The 74ACT11244PWR operates from 4.5 V to 5.5 V. This range ensures compatibility with standard 5-V TTL and CMOS logic families, supports stable performance across power supply tolerances, and maintains specified timing and drive characteristics across the full industrial temperature range (−40°C to +85°C). Operation outside this range may cause functional failure or parametric degradation.

Does the 74ACT11244PWR support TTL-level input signals?

Yes, the 74ACT11244PWR features TTL-voltage-compatible inputs with V_IL ≤ 0.8 V and V_VIH ≥ 2.0 V. This allows direct connection to legacy 74LS, 74F, and microcontroller GPIOs without external pull-ups or level translators. The input structure is optimized for noise margin and reliable switching in mixed-logic environments where the 74ACT11244PWR serves as a bridge device.

How many independent 3-state enable controls does the 74ACT11244PWR have?

The 74ACT11244PWR has two independent active-low 3-state enable inputs: 1OE (pin 24) controls outputs 1Y1–1Y4, and 2OE (pin 17) controls outputs 2Y1–2Y4. This dual-enable architecture allows time-multiplexed bus access, isolated channel buffering, or selective output disabling-critical for flexible memory mapping and peripheral arbitration in systems using the 74ACT11244PWR.

What package type is used for the 74ACT11244PWR, and what are its key mechanical features?

The 74ACT11244PWR uses a TSSOP-24 (PW) package: 7.8 mm × 4.4 mm body, 1.2 mm max height, 0.65 mm lead pitch, and five GND pins plus two V_CC pins positioned centrally. These features reduce ground bounce, improve thermal dissipation, and support high-density PCB layouts-making the 74ACT11244PWR ideal for space-constrained industrial logic applications.

Is the 74ACT11244PWR suitable for high-noise industrial environments?

Yes, the 74ACT11244PWR is qualified for industrial use with −40°C to +85°C operation, 500-mA latch-up immunity at 125°C, and center-placed V_CC/GND pins that minimize simultaneous switching noise. Its EPIC CMOS process and flow-through pinout further enhance noise resilience-making the 74ACT11244PWR a robust choice for factory automation, motor drives, and other electrically harsh settings.