Texas Instruments SN74LVC828ANSR

Overview

SN74LVC828ANSR from Texas Instruments is a 10-bit inverting buffer/driver with dual 3-state enable inputs (OE1, OE2) and 24-pin SSOP packaging, operating from 1.65 V to 3.6 V supply, supporting 5.5-V-tolerant inputs and delivering ≤6.7 ns propagation delay at 3.3 V - used for wide-bus signal translation and isolation in mixed-voltage memory or data-path interfaces.

For engineers reviewing the SN74LVC828ANSR datasheet, SN74LVC828ANSR pinout, SN74LVC828ANSR application, or SN74LVC828ANSR equivalent, key selection criteria include its dual active-low 3-state control logic, Ioff partial-power-down support, ±24-mA drive strength at 3 V, and compatibility with 3.3-V/5-V bidirectional level-shifting systems.

Technical Context

The SN74LVC828ANSR implements a 10-channel inverting buffer architecture with two independent AND-gated 3-state enables (OE1 and OE2), where either high input forces all Y outputs into high-impedance. Its Ioff circuitry disables outputs during power-down to prevent backflow current, and input structures tolerate up to 5.5 V regardless of VCC.

It supports mixed-mode operation: 5-V inputs reliably interface with 3.3-V VCC, enabling use as a voltage translator without external biasing. Output ground bounce (VOLP < 0.8 V) and undershoot (VOHV > 2 V) are characterized at 3.3 V, confirming robust signal integrity in fast-switching bus environments.

Key Specifications

Pinout & Package

SN74LVC828ANSR uses a 24-pin SSOP (Shrink Small Outline Package) with 0.65-mm lead pitch, 7.9 mm × 5.1 mm body size, and 1.2-mm max height - optimized for high-density PCB layouts while maintaining hand-solderability and reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit inverting buffer applications.

Compared with SN74LVC827ANSR and 74LVC244APW, the SN74LVC828ANSR uniquely delivers 10-bit inversion plus dual AND-gated 3-state control - critical for fault-tolerant bus arbitration and legacy system compatibility where signal polarity and enable redundancy are design requirements.

Availability

SN74LVC828ANSR is available at Aetrix Electronics and suitable for memory subsystems, industrial backplanes, FPGA I/O expansion, and legacy system upgrades requiring stable component supply, long-term obsolescence mitigation, and consistent SSOP-24 sourcing.

Supply support for SN74LVC828ANSR 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 and broad industrial portfolio coverage.

The SN74LVC828ANSR belongs to TI's LVC logic family - designed specifically for low-voltage, high-speed, mixed-signal interfacing in space-constrained embedded systems where power efficiency, voltage translation, and bus integrity are critical.

FAQ

What is the logic function of SN74LVC828ANSR?

The SN74LVC828ANSR is a 10-bit inverting buffer with dual active-low 3-state enable inputs (OE1 and OE2). Its output Yn equals NOT(An) when both OE1 and OE2 are low; otherwise, all outputs enter high-impedance state. This AND-gated enable structure prevents unintended bus activation if one enable signal floats or glitches - a key reliability feature confirmed in the logic diagram and function table of the official datasheet.

Does SN74LVC828ANSR support 5-V input signals while powered from 3.3 V?

Yes, SN74LVC828ANSR accepts input voltages up to 5.5 V regardless of VCC level (1.65–3.6 V), enabling true mixed-voltage operation. This is explicitly specified in the "Inputs Accept Voltages to 5.5 V" feature and verified in the Absolute Maximum Ratings table (VI = –0.5 to 6.5 V) and Recommended Operating Conditions (VI = 0 to 5.5 V), making SN74LVC828ANSR ideal for interfacing 5-V peripherals with modern 3.3-V controllers.

What package type does SN74LVC828ANSR use, and what are its key mechanical dimensions?

SN74LVC828ANSR uses the SSOP-24 (DB) package: 7.9 mm × 5.1 mm body size, 0.65-mm lead pitch, and 1.2-mm maximum height. These dimensions are defined in the official TI package outline DBO0024A and confirmed in the Package Option Addendum - ensuring compatibility with standard SSOP footprints and reflow profiles for high-density PCB assembly.

How does the Ioff feature of SN74LVC828ANSR improve system reliability?

The Ioff feature of SN74LVC828ANSR disables all outputs and limits leakage to ±10 µA when VCC = 0 V or unpowered, preventing damaging current backflow from live buses into unpowered sections. This is validated in the Electrical Characteristics table and supports safe hot-swap, partial-power-down, and modular system architectures - a requirement explicitly cited in the device description and ordering information for SN74LVC828ANSR.

Can SN74LVC828ANSR replace older 74ACT or 74ALS logic in legacy designs?

Yes, SN74LVC828ANSR is frequently used as a drop-in replacement for obsolete 74ACT828 and 74ALS828 in legacy systems due to matching 10-bit inverting buffer functionality, compatible SSOP-24 footprint, and superior specs: lower VCC (1.65–3.6 V vs. 5 V), 5.5-V-tolerant inputs, and integrated Ioff. TI's datasheet confirms functional equivalence for bus interface roles, and real-world design notes validate successful migration without layout changes.