Texas Instruments SN74LVC828APW

Overview

SN74LVC828APW from Texas Instruments is a 10-bit inverting buffer/driver with dual 3-state enable inputs (OE1, OE2), designed for 1.65-V to 3.6-V V_CC operation and supporting mixed-mode 5-V input/3.3-V output translation. It delivers 6.7 ns max propagation delay at 3.3 V, ±24 mA output drive, and I_off support for partial-power-down mode - used in wide-data-path bus interfacing and level-shifting between legacy 5-V and modern low-voltage logic systems.

For engineers reviewing the SN74LVC828APW datasheet, SN74LVC828APW pinout, SN74LVC828APW application, or SN74LVC828APW equivalent, key selection considerations include its dual active-low 3-state control architecture, 5.5-V-tolerant inputs, 24-pin TSSOP package, and verified performance in high-density memory/data bus isolation and voltage-level translation scenarios.

Technical Context

The SN74LVC828APW implements a dual-input AND gate logic for 3-state control: both OE1 and OE2 must be low to enable outputs; either high forces all ten Y outputs into high-impedance. Its inputs accept up to 5.5 V independent of V_CC, enabling direct interface with 5-V TTL/CMOS sources while operating at 1.65–3.6 V.

It features I_off circuitry that disables outputs during power-down to prevent backflow current, and exhibits robust ESD protection (2000-V HBM, 200-V MM, 1000-V CDM). Output ground bounce (V_OLP) and undershoot (V_OHV) are characterized at <0.8 V and >2 V respectively under 3.3-V operation.

Key Specifications

Pinout & Package

TSSOP-24 (PW) package: 7.8 mm × 4.4 mm body, 0.65 mm lead pitch, 1.2 mm max height, exposed pad not present, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC827APW, SN74LVC828APW provides intentional signal inversion beneficial for parity generation or bus complementation; compared with 74ALVC162244DGGR, it offers compact 10-bit width and simpler dual-OE arbitration at the cost of channel count - ideal for targeted 10-line isolation rather than full bus expansion.

Availability

SN74LVC828APW is available at Aetrix Electronics and suitable for memory bus isolation, hot-swappable module interfaces, and mixed-voltage data path translation requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.

Supply support for SN74LVC828APW 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.

The SN74LVC828APW belongs to TI's LVC logic family - engineered for low-voltage, high-speed, mixed-signal interfacing in industrial, communications, and computing systems where voltage translation and bus integrity are critical.

FAQ

What is the function of OE1 and OE2 on the SN74LVC828APW?

The SN74LVC828APW uses OE1 and OE2 as active-low 3-state enable inputs wired as an AND gate: both must be low to activate the ten inverting outputs. If either is high, all Y1–Y10 enter high-impedance state. This dual-control scheme prevents bus contention during multi-driver arbitration and simplifies enable logic in shared-data-path designs. The SN74LVC828APW datasheet confirms this behavior in the FUNCTION TABLE and LOGIC DIAGRAM sections.

Can the SN74LVC828APW safely interface a 5-V microcontroller with a 3.3-V FPGA?

Yes - the SN74LVC828APW accepts inputs up to 5.5 V regardless of V_CC, making it ideal for translating 5-V logic levels to 3.3-V domains. When powered at 3.3 V, its outputs swing rail-to-rail within that range and remain 5.5-V tolerant in high-Z mode. This eliminates external level-shifting components while maintaining timing integrity, as verified in the "Mixed-Mode Signal Operation" feature and Recommended Operating Conditions table for SN74LVC828APW.

Does the SN74LVC828APW support partial power-down operation?

Yes - the SN74LVC828APW integrates I_off circuitry that disables outputs and limits leakage to ±10 µA when V_CC = 0 V, preventing damaging back-current during hot-swap or power-gated operation. This capability is explicitly specified in the Absolute Maximum Ratings and Electrical Characteristics tables for SN74LVC828APW and is validated per JESD 78 guidelines.

What is the maximum propagation delay for the SN74LVC828APW at 1.8 V supply?

The SN74LVC828APW has a maximum propagation delay (t_pd) of 7.1 ns at V_CC = 1.8 V, as documented in the Switching Characteristics table under "VCC = 1.8 V" column. This value applies to A→Y transitions and reflects worst-case performance across temperature and process corners - critical for timing budgeting in low-voltage, high-density PCB layouts using SN74LVC828APW.

Is the SN74LVC828APW pin-compatible with other packages in the same family?

No - the SN74LVC828APW (TSSOP-24, PW) shares identical logic and pin functions with SN74LVC828ADW (SOIC-24) and SN74LVC828ADBR (SSOP-24), but mechanical dimensions, lead pitch, and thermal characteristics differ. While electrical pin mapping is consistent across packages, PCB footprints are not interchangeable. The SN74LVC828APW requires its specific 0.65-mm-pitch TSSOP land pattern per TI's PW0024A package outline.