Texas Instruments 74AHCT16244DGVRE4

Overview

74AHCT16244DGVRE4 from Texas Instruments is a 16-bit noninverting 3-state buffer/driver with four independent 4-bit sections, TTL-compatible inputs (VIH = 2 V, VIL = 0.8 V), 5-V supply operation, and ±25 mA output drive per channel. It enables high-density bus interfacing in memory address, clock distribution, and peripheral data paths where controlled output enable and low-noise edge rates are required.

For engineers reviewing the 74AHCT16244DGVRE4 datasheet, 74AHCT16244DGVRE4 pinout, 74AHCT16244DGVRE4 application, or 74AHCT16244DGVRE4 equivalent, this device supports voltage translation from 3.3-V logic to 5-V buses, features distributed VCC/GND pins to suppress switching noise, and delivers guaranteed tPLH/tPHL ≤ 10.5 ns (CL = 15 pF) across –40°C to 125°C.

Technical Context

The 74AHCT16244DGVRE4 implements four identical 4-bit noninverting buffer sections, each with an active-low output-enable (OE) input controlling all four outputs simultaneously. Its EPIC™ CMOS process ensures latch-up immunity >250 mA and ESD protection >2000 V HBM.

All inputs accept TTL voltage levels and tolerate up to 5.5 V regardless of VCC; outputs switch rail-to-rail between GND and VCC with symmetrical drive strength and slow edge rates (Δt/Δv ≥ 20 ns/V) to minimize ringing on light loads.

Key Specifications

Pinout & Package

74AHCT16244DGVRE4 uses a 48-pin TVSOP (DGV) package measuring 9.70 mm × 4.40 mm with 0.4-mm pitch, optimized for high-density PCB layouts and flow-through signal routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Compared with SN74AHCT16244DGVR, 74AHCT16244DGVRE4 offers identical performance with EIA-481-compliant tape-and-reel for high-volume SMT; versus SN74LVC16244ADGGR, it provides essential 5-V operation and TTL compatibility at the cost of slightly higher propagation delay.

Availability

74AHCT16244DGVRE4 is available at Aetrix Electronics and suitable for telecom infrastructure, electronic points of sale, and motor drive applications requiring stable component supply, extended temperature support, and long-term industrial lifecycle assurance.

Supply support for 74AHCT16244DGVRE4 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 expertise in high-reliability industrial and automotive-grade components.

The SN74AHCT16244 series belongs to TI's Widebus™ family of high-density logic buffers, engineered specifically for noise-resilient memory addressing, clock distribution, and bus interface applications in demanding industrial environments.

FAQ

What is the maximum operating temperature for the 74AHCT16244DGVRE4?

The 74AHCT16244DGVRE4 is fully specified from –40°C to 125°C ambient temperature, meeting industrial-grade thermal requirements. Its EPIC™ CMOS process and robust thermal design (RθJA = 83.5°C/W in DGV package) ensure stable operation in enclosed enclosures or high-ambient environments such as motor drive cabinets and outdoor telecom nodes.

Does the 74AHCT16244DGVRE4 support 3.3-V input logic levels?

Yes, the 74AHCT16244DGVRE4 accepts TTL-compatible inputs with VIH ≥ 2.0 V and VIL ≤ 0.8 V, making it fully interoperable with 3.3-V CMOS and LVTTL outputs. Its inputs are overvoltage tolerant up to 5.5 V, allowing safe interfacing even when VCC = 5 V and input signals swing to 3.3 V.

How many output-enable inputs does the 74AHCT16244DGVRE4 have?

The 74AHCT16244DGVRE4 has four independent active-low output-enable inputs: 1OE, 2OE, 3OE, and 4OE - each controlling a separate 4-bit buffer section. This allows granular control over signal routing, such as enabling only specific address lanes or peripheral interfaces while keeping others in high-impedance state.

Can the 74AHCT16244DGVRE4 be used for level translation from 3.3 V to 5 V?

Yes, the 74AHCT16244DGVRE4 is explicitly designed for upward level translation: its TTL-compatible inputs reliably recognize 3.3-V logic highs (≥2 V), while its outputs swing rail-to-rail between GND and 5 V. This enables direct connection between 3.3-V microcontrollers and 5-V peripherals without external translators.

What is the recommended bypass capacitor strategy for the 74AHCT16244DGVRE4?

Each of the four VCC pins (7, 18, 31, 42) should be decoupled with a 0.01–0.022 µF ceramic capacitor placed as close as possible to the pin. For bulk filtering, add a shared 0.1 µF capacitor near the device. Avoid daisy-chaining bypass caps - use individual vias to ground planes to maintain low-inductance paths for high-frequency noise suppression.