Texas Instruments SN74LVC16244ADGVR

Overview

SN74LVC16244ADGVR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 1.65 V to 3.6 V operation. It features four independent 4-bit sections, each with active-low output-enable (OE) control, 5.5 V tolerant inputs, and a maximum propagation delay of 4.6 ns at 3.3 V - enabling use in high-speed bus interface and memory address driving applications in mixed-voltage systems.

For engineers reviewing the SN74LVC16244ADGVR datasheet, SN74LVC16244ADGVR pinout, SN74LVC16244ADGVR application, or SN74LVC16244ADGVR equivalent, key selection considerations include its Ioff support for live insertion, symmetrical 3-state timing (ten/tdis ≤ 5.1 ns), ±24 mA output drive capability at 3 V, and compatibility with TSSOP/TVSOP/SSOP packages across industrial temperature range (–40°C to 125°C).

Technical Context

This device implements sixteen CMOS-based noninverting buffers organized into four independent 4-bit groups, each controlled by a dedicated active-low OE input. Each group drives true (noninverted) outputs with rail-to-rail swing relative to VCC, supporting bidirectional voltage translation from 5-V inputs down to 1.65–3.6-V logic domains.

Its Ioff feature ensures isolation when VCC = 0 V, preventing current backflow during partial power-down or hot-plug scenarios. The architecture includes robust ESD protection (>2 kV HBM, >1 kV CDM), latch-up immunity (>250 mA per JESD17), and ground-bounce/undershoot mitigation (VOLP < 0.8 V, VOHV > 2 V at 3.3 V).

Key Specifications

Pinout & Package

SN74LVC16244ADGVR is packaged in a 48-pin TVSOP (DGV) with nominal body size 9.70 mm × 4.40 mm, lead pitch 0.4 mm, and RoHS-compliant NiPdAu finish. Pin numbering follows standard DGG/DGV/DL top-view convention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC162244ADGVR and 74ALVC16244PW, the SN74LVC16244ADGVR provides optimal balance of industrial temperature range, Ioff-enabled hot-swap safety, and proven layout compatibility - making it preferred for mission-critical embedded infrastructure where reliability outweighs marginal speed gains.

Availability

SN74LVC16244ADGVR is available at Aetrix Electronics and suitable for industrial automation, server memory subsystems, and network infrastructure requiring stable component supply across long product lifecycles and extended temperature ranges.

Supply support for SN74LVC16244ADGVR 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 interface ICs for industrial and computing markets.

The SN74LVC16244ADGVR belongs to TI's Widebus™ family of advanced logic devices, engineered specifically to enhance density, timing precision, and voltage flexibility in memory addressing, clock distribution, and bus-oriented transceiver applications.

FAQ

What is the maximum operating voltage for SN74LVC16244ADGVR inputs?

The SN74LVC16244ADGVR inputs tolerate up to 5.5 V regardless of VCC level, enabling direct connection to 5-V logic sources in mixed-voltage systems without external level shifters. This specification is guaranteed across the full operating temperature range (–40°C to 125°C) and applies to all 16 input pins (1A1–4A4). Input voltage must remain within –0.5 V to 5.5 V to avoid absolute maximum rating violations.

Does SN74LVC16244ADGVR support hot-swap or live insertion?

Yes, SN74LVC16244ADGVR supports live insertion via its Ioff feature, which disables current flow through inputs and outputs when VCC = 0 V. This prevents back-driving of powered circuitry during module replacement in backplane or docking station applications. The feature is characterized and guaranteed per JEDEC JESD78, with Ioff ≤ ±20 μA at VI/VO = 5.5 V and TA = 125°C.

What is the propagation delay of SN74LVC16244ADGVR at 3.3 V and 125°C?

At VCC = 3.3 V and TA = 125°C, the maximum propagation delay (tpd) of SN74LVC16244ADGVR is 4.6 ns, measured from input transition (10% to 90%) to output transition (50%). This value is specified in the "Switching Characteristics, –40°C to 125°C" table of the datasheet and applies uniformly across all 16 channels under load conditions of CL = 50 pF and RL = 500 Ω.

How many ground pins does SN74LVC16244ADGVR have in the TVSOP package?

SN74LVC16244ADGVR in the TVSOP (DGV) package has eight dedicated GND pins (pins 4, 10, 15, 21, 28, 34, 39, and 45), strategically distributed to minimize ground inductance and suppress simultaneous switching noise. This layout supports clean signal integrity for high-speed 16-bit bus operation and aligns with TI's recommended PCB grounding practices for Widebus™ devices.

Can SN74LVC16244ADGVR be used as a level translator between 5-V and 3.3-V logic?

Yes, SN74LVC16244ADGVR functions as a unidirectional level translator: 5-V inputs are safely accepted at any valid VCC (1.65–3.6 V), and outputs swing rail-to-rail relative to VCC. For example, with VCC = 3.3 V, it translates 5-V address signals from a microcontroller to 3.3-V memory devices. Bidirectional translation requires additional circuitry, as the device is noninverting and output-only.