Texas Instruments SN74LVC16244ADL

Overview

SN74LVC16244ADL from Texas Instruments is a 16-bit noninverting 3-state buffer/driver operating from 1.65 V to 3.6 V, featuring 5.5-V-tolerant inputs, 4.1-ns max propagation delay at 3.3 V, and I_off support for live insertion. It serves as a bus interface and level translator in memory address, clock, and data bus systems.

For engineers reviewing the SN74LVC16244ADL datasheet, SN74LVC16244ADL pinout, SN74LVC16244ADL application, or SN74LVC16244ADL equivalent, key selection criteria include its quad 4-bit enable architecture, 3.6-V absolute input tolerance, −40°C to +125°C operating range, and SSOP-48 package compatibility with high-density PCB layouts.

Technical Context

The SN74LVC16244ADL implements four independent 4-bit buffer sections, each with an active-low output-enable (OE) input controlling Y1–Y4 outputs corresponding to A1–A4 inputs. All inputs accept voltages up to 5.5 V regardless of V_CC, enabling reliable 5-V-to-3.3-V down-translation in mixed-voltage systems.

Its CMOS design supports I_off protection-preventing current flow when V_CC = 0 V-and exceeds JESD 22 ESD ratings (2000-V HBM, 1000-V CDM). The device exhibits symmetrical drive strength (±24 mA at 3.0 V), low ground bounce (<0.8 V), and VOH undershoot >2 V at 3.3 V, TA = 25°C.

Key Specifications

Pinout & Package

SN74LVC16244ADL is supplied in a 48-pin SSOP (DL) package measuring 15.88 mm × 7.49 mm, with 0.635-mm lead pitch and RoHS-compliant NiPdAu lead finish. It features four independent 4-bit sections, each with dedicated OE control and dual power/ground rails for noise isolation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buffer/driver applications.

Compared with SN74LVC16244ADL, the TSSOP variant offers superior thermal performance in a slightly larger footprint, while the TVSOP version trades thermal efficiency for minimal height-making all three variants suitable for distinct mechanical and thermal design priorities without functional compromise.

Availability

SN74LVC16244ADL is available at Aetrix Electronics and suitable for servers, network switches, and industrial embedded systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for SN74LVC16244ADL 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 connectivity technologies, with decades of experience in high-reliability logic and interface solutions.

The SN74LVC16244ADL belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically to enhance density, speed, and voltage flexibility in memory addressing, clock distribution, and system-level bus architectures.

FAQ

What is the maximum input voltage rating for SN74LVC16244ADL?

The SN74LVC16244ADL supports input voltages up to 5.5 V across its entire valid V_CC range (1.65 V to 3.6 V). This 5.5-V tolerance is specified in the Absolute Maximum Ratings table and enables direct interfacing with 5-V logic families without external level-shifting circuitry. The SN74LVC16244ADL maintains full DC and AC functionality under this condition, making it ideal for mixed-voltage system integration.

Does SN74LVC16244ADL support hot-plug or partial-power-down operation?

Yes, SN74LVC16244ADL includes I_off circuitry that actively disables input and output leakage paths when V_CC = 0 V. This feature ensures no harmful current flows between powered and unpowered sections of a system, supporting safe live insertion, hot-swap backplane applications, and graceful partial-power-down sequences. The SN74LVC16244ADL remains electrically isolated and non-damaging under these conditions.

What is the propagation delay of SN74LVC16244ADL at 3.3 V?

The maximum propagation delay (t_pd) of SN74LVC16244ADL is 4.1 ns at V_CC = 3.3 V, −40°C to +85°C, as specified in the Switching Characteristics table. At the extended temperature range (−40°C to +125°C), the max t_pd increases to 4.6 ns. These values reflect worst-case A-to-Y path delay under standard load conditions (C_L = 50 pF, ΔV = ±0.3 V), ensuring timing margin compliance in high-speed bus designs using SN74LVC16244ADL.

How many independent output-enable controls does SN74LVC16244ADL provide?

SN74LVC16244ADL provides four independent active-low output-enable inputs: 1OE, 2OE, 3OE, and 4OE. Each controls a dedicated 4-bit buffer section (A1–A4 → Y1–Y4), allowing granular bus segmentation. This architecture enables selective activation of memory banks, peripheral groups, or data lanes without affecting other sections-critical for power management and signal integrity in complex SN74LVC16244ADL-based systems.

What package type is used for SN74LVC16244ADL?

SN74LVC16244ADL is packaged in a 48-pin SSOP (Shrink Small Outline Package), designated DL, with nominal dimensions of 15.88 mm × 7.49 mm and 0.635-mm lead pitch. This package offers mechanical robustness and thermal performance suitable for industrial environments, and is distinct from the TSSOP (DGG) and TVSOP (DGV) variants of the same SN74LVC16244ADL family.