Texas Instruments SN74LVC162244ADGVR

Overview

SN74LVC162244ADGVR from Texas Instruments is a 16-bit noninverting 3-state buffer/driver with four independent active-low output-enable inputs, operating from 1.65 V to 3.6 V, supporting 5.5-V-tolerant inputs and delivering ±12 mA output drive at 3.3 V - used in memory address buffering, bus isolation, and mixed-voltage I/O translation in industrial control backplanes.

For engineers reviewing the SN74LVC162244ADGVR datasheet, SN74LVC162244ADGVR pinout, SN74LVC162244ADGVR application, or SN74LVC162244ADGVR equivalent, key selection criteria include its 4.4 ns max propagation delay at 3.3 V, Ioff partial-power-down protection, integrated 26-Ω output series resistance, 3-state bus-hold capability, and TVSOP-48 (DGV) package compatibility with high-density PCB layouts.

Technical Context

This device implements four independent 4-bit noninverting buffers, each with dedicated active-low OE control (1OE–4OE), enabling selective 4-bit bus segment isolation. All inputs tolerate up to 5.5 V regardless of VCC, allowing reliable level translation from 5-V logic into 3.3-V systems without external components.

Each output features built-in 26-Ω series termination to suppress overshoot/undershoot, and the Ioff circuit ensures no back-drive current flows when VCC = 0 V - critical for hot-swap and partial-power-down operation. The device meets JESD 78 Class II latch-up immunity (>100 mA) and exceeds JESD 22 ESD ratings (2000-V HBM, 1000-V CDM).

Key Specifications

Pinout & Package

SN74LVC162244ADGVR uses the TVSOP-48 (DGV) package: 9.70 mm × 4.40 mm, 0.4 mm pitch, 1.2 mm max height, lead-free NiPdAu finish, MSL Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC162244ADGVR, the DGGR offers +14% thermal mass for sustained 12-mA output loading, while DL provides superior mechanical stability in shock-prone environments - neither is pin-compatible with DGV due to differing pitch and pad layout, requiring PCB redesign for substitution.

Availability

SN74LVC162244ADGVR is available at Aetrix Electronics and suitable for industrial backplane isolation, memory address buffering, motor control I/O expansion, and test equipment signal conditioning requiring stable component supply across multi-year production cycles.

Supply support for SN74LVC162244ADGVR 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 over 50 years of innovation in high-reliability digital interface ICs.

The SN74LVC162244ADGVR belongs to TI's Widebus™ family - engineered specifically for high-density, low-skew memory and bus interface applications in industrial, automotive, and communications infrastructure.

FAQ

What is the maximum clock/data rate supported by SN74LVC162244ADGVR?

The SN74LVC162244ADGVR has a maximum propagation delay (tpd) of 4.4 ns at 3.3 V, supporting reliable operation up to approximately 100 MHz for synchronous bus applications. Its 26-Ω output series resistance and low ground bounce (<0.8 V VOLP) ensure signal integrity at these speeds without external termination - actual usable rate depends on trace length, load capacitance, and timing margins in the target system.

Does SN74LVC162244ADGVR support hot-swap or live-insertion applications?

Yes, SN74LVC162244ADGVR supports hot-swap via its Ioff feature: when VCC = 0 V, input/output leakage remains ≤±10 µA even with 5.5-V signals applied, preventing damaging back-current flow. This enables safe insertion into powered backplanes - however, OE pins must be pulled high via external resistors during power-up to guarantee initial high-impedance state.

Can SN74LVC162244ADGVR translate 5-V logic levels to 3.3-V systems?

Yes, SN74LVC162244ADGVR accepts input voltages up to 5.5 V regardless of VCC (1.65–3.6 V), making it ideal for 5-V-to-3.3-V down-translation. Its outputs swing rail-to-rail within the VCC range, so with VCC = 3.3 V, it delivers true 3.3-V CMOS logic levels - no external level-shifting components are needed.

What is the purpose of the multiple VCC and GND pins on SN74LVC162244ADGVR?

SN74LVC162244ADGVR has four VCC (pins 7, 18, 31, 42) and eight GND (pins 4, 10, 15, 21, 28, 34, 39, 45) pins to minimize power distribution impedance and ground bounce during simultaneous switching of all 16 outputs. This distributed power network ensures stable voltage delivery and tight return paths, critical for maintaining signal integrity and meeting EMI limits in high-speed bus applications.

Is SN74LVC162244ADGVR pin-compatible with older SN74LVC162244 variants?

Yes, SN74LVC162244ADGVR is functionally and pin-compatible with earlier revisions (e.g., SN74LVC162244A) in the same TVSOP-48 (DGV) package - the "D" suffix denotes improved characterization, and "GVR" confirms the DGV variant. Electrical specs, pin functions, and thermal ratings remain identical; only minor process enhancements differentiate this production version.