Texas Instruments SN74LVC828ADW

Overview

SN74LVC828ADW 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 and ±24 mA output drive, used in wide data bus interfaces requiring high-impedance control and level shifting.

For engineers reviewing the SN74LVC828ADW datasheet, SN74LVC828ADW pinout, SN74LVC828ADW application, or SN74LVC828ADW equivalent, key selection criteria include its dual active-low 3-state control architecture, I_off partial-power-down support, 5.5-V-tolerant inputs, and SOIC-24 package compatibility with industrial bus termination and memory address buffering.

Technical Context

The SN74LVC828ADW implements a dual-input AND logic gate 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 inverting data path provides complementary signal routing while maintaining timing symmetry across channels.

It features I_off circuitry that disables outputs during power-down to prevent backflow current, and supports mixed-voltage operation-inputs tolerate up to 5.5 V independent of V_CC, enabling direct interfacing between 5-V legacy peripherals and 3.3-V logic domains without external level shifters.

Key Specifications

Pinout & Package

SN74LVC828ADW is housed in a 24-pin SOIC (DW) package with 1.27 mm lead pitch, 7.5 mm body width, and JEDEC MO-001AC compliance. The package supports standard reflow profiles (MSL Level-1, 260°C peak) and fits IPC-7351 SOIC-24 land patterns.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC828ADW, SN74LVC827ADW preserves input polarity but sacrifices inversion-based timing alignment, while 74LVC244ADW reduces channel count and removes redundant enable control-both require schematic and layout review due to functional and pinout differences.

Availability

SN74LVC828ADW is available at Aetrix Electronics and suitable for industrial I/O expansion, memory address buffering, and mixed-voltage bus interface applications requiring stable component supply and long-term manufacturability.

Supply support for SN74LVC828ADW 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 interface and power management ICs.

The SN74LVC828ADW belongs to TI's LVC logic family, engineered for low-voltage, high-speed bus interfacing in industrial, computing, and communications systems where mixed-supply compatibility and robust 3-state control are essential.

FAQ

What is the function of the dual OE inputs on the SN74LVC828ADW?

The SN74LVC828ADW uses OE1 and OE2 as active-low inputs connected to an internal AND gate: both must be low to enable the ten inverting outputs. If either is high, all Y outputs go high-impedance. This architecture supports fail-safe bus release, redundant enable paths, or hierarchical control in multi-master systems - a key differentiator from single-OE buffers like the 74LVC244ADW.

Can SN74LVC828ADW operate with a 2.5-V supply and accept 5-V inputs simultaneously?

Yes. The SN74LVC828ADW is fully specified for V_CC = 2.5 V and supports input voltages up to 5.5 V regardless of supply level. This allows direct connection of 5-V sensors or legacy peripherals to a 2.5-V domain without level-shifting circuitry - verified across –40°C to 85°C per TI's recommended operating conditions table.

Does SN74LVC828ADW support hot-swap or partial-power-down operation?

Yes. The SN74LVC828ADW integrates I_off circuitry that limits off-state current to <±10 µA when V_CC = 0 V and inputs/outputs are biased up to 5.5 V. This prevents damaging backflow current during live insertion or asymmetric power sequencing - a requirement explicitly tested per JESD 78 and documented in TI's Electrical Characteristics table.

What is the maximum output current capability of SN74LVC828ADW at 3.3-V supply?

At V_CC = 3.3 V, the SN74LVC828ADW delivers ±24 mA per output in steady state (I_OH = –24 mA, I_OL = 24 mA), as confirmed in TI's Electrical Characteristics table under "Recommended Operating Conditions." This supports driving terminated transmission lines or multiple LVC/LVT loads without external buffers.

Is SN74LVC828ADW pin-compatible with other 24-pin SOIC logic devices?

No - SN74LVC828ADW has a unique 10-bit inverting buffer pinout with dual OE inputs and 10 dedicated A/Y pairs. While it shares the SOIC-24 (DW) package outline with devices like 74LVC244ADW, pin assignments differ significantly: OE placement, input/output grouping, and power/ground locations are not interchangeable. Layout reuse requires full netlist validation.