Texas Instruments SN74LVC162244DLR

Overview

SN74LVC162244DLR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 2.7-V to 3.6-V V_CC operation. It provides true outputs, symmetrical active-low output-enable (OE) inputs, bus-hold on all data inputs, and integrated 26-Ω series output resistors-enabling clean signal integrity in memory address, clock, and bus interface applications.

For engineers reviewing the SN74LVC162244DLR datasheet, SN74LVC162244DLR pinout, SN74LVC162244DLR application, or SN74LVC162244DLR equivalent, key selection considerations include its 16-bit 3-state drive capability, bus-hold functionality eliminating external pull resistors, ±12 mA output drive at 3 V, 7 ns max propagation delay, and DL-package compatibility with high-density PCB layouts.

Technical Context

This device implements four independent 4-bit buffers in a single IC, each with dedicated active-low OE control (1OE–4OE). Its EPIC™ submicron CMOS process enables low power consumption (20 µA typical ICC) while supporting fast switching (1.5–8 ns t_pd) across the full industrial temperature range (–40°C to 85°C).

The integrated 26-Ω series output resistors suppress overshoot/undershoot without external components, and bus-hold circuitry maintains valid logic levels on floating inputs-critical for reliable operation in hot-swap or partial-configuration systems where input signals may be temporarily unasserted.

Key Specifications

Pinout & Package

SN74LVC162244DLR uses a 48-pin plastic shrink small-outline (DL) package (300-mil width), with dual-row gull-wing leads and standard JEDEC MO-153 footprint. Pin 1 is marked by a beveled corner or dot; pin numbering proceeds counterclockwise from top-left.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC162244DLR, SN74LVC16244DGGR offers identical functionality in a thinner package ideal for slim-profile systems, while 74ALVC162244MTDX trades bus-hold and integrated termination for higher speed-requiring additional external components to match SN74LVC162244DLR's plug-and-play robustness.

Availability

SN74LVC162244DLR is available at Aetrix Electronics and suitable for memory subsystems, clock distribution networks, industrial backplanes, and legacy bus interface designs requiring stable component supply, long-term lifecycle support, and guaranteed authentic sourcing.

Supply support for SN74LVC162244DLR 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 experience in high-reliability industrial and automotive ICs.

The SN74LVC162244DLR belongs to TI's Widebus™ family of advanced bus-interface logic, engineered specifically to enhance density and signal integrity in 3-state memory addressing, clock buffering, and parallel bus transmission systems.

FAQ

What is the recommended power-up sequence for SN74LVC162244DLR to ensure reliable 3-state behavior?

TI recommends tying all OE inputs to V_CC through a pullup resistor during power-up and power-down to guarantee outputs remain in high-impedance state until V_CC stabilizes. For SN74LVC162244DLR, a 10-kΩ resistor suffices given its OE input leakage of ±5 µA at 3.6 V-preventing unintended bus contention before system initialization completes.

Does SN74LVC162244DLR support mixed-voltage interfacing, such as 3.3-V inputs driving 5-V tolerant outputs?

No-SN74LVC162244DLR is not 5-V tolerant. Its absolute maximum input voltage is V_CC + 0.5 V (≤ 4.1 V at 3.6 V V_CC), and it lacks explicit 5-V input tolerance. Interfacing with 5-V systems requires level-shifting circuitry; SN74LVC162244DLR operates strictly within 2.7–3.6 V V_CC and expects compatible input voltage thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2 V).

How does the bus-hold feature in SN74LVC162244DLR affect power consumption during idle states?

The bus-hold circuitry in SN74LVC162244DLR draws ±75 µA per input at V_I = 2 V, adding negligible quiescent current versus standard LVC inputs (±5 µA). Total added current for all 16 inputs remains under 1.2 mA-well within the device's 500 µA max ICC spec under partial switching conditions, making it power-efficient even with all inputs floating.

Can SN74LVC162244DLR be used to replace older 74ACT or 74F-series 16-bit buffers in existing designs?

Yes-SN74LVC162244DLR is pin-compatible with industry-standard 48-pin DL-packaged 16-bit buffers like SN74ACT162244 and SN74F2244. Its 2.7–3.6 V operation, lower ICC (<20 µA), and integrated features (bus-hold, 26-Ω resistors) simplify drop-in upgrades, though V_CC must be adjusted from 5 V to 3.3 V and input thresholds verified for compatibility.

What is the thermal performance difference between the DL and DGG packages for SN74LVC162244DLR?

The DL package (SN74LVC162244DLR) has a thermal resistance θ_JA of 50°C/W, while the DGG variant (SN74LVC16244DGGR) is rated at 65°C/W. However, DL's higher power dissipation rating (1.4 W vs DGG's 1 W) and larger body allow greater sustained power handling in still-air environments-making SN74LVC162244DLR preferable for thermally demanding applications with limited airflow.