Texas Instruments SN74LVC828ADGVR

Overview

SN74LVC828ADGVR 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 interfacing in wide data buses or parity paths. It delivers 6.7 ns max propagation delay at 3.3 V, ±24 mA output drive, and I_off support for partial-power-down systems.

For engineers reviewing the SN74LVC828ADGVR datasheet, SN74LVC828ADGVR pinout, SN74LVC828ADGVR application, or SN74LVC828ADGVR equivalent, key selection criteria include its dual active-low 3-state control architecture, 5.5-V-tolerant inputs, low ground bounce (<0.8 V), and TVSOP-24 package compatibility with high-density PCB layouts.

Technical Context

The SN74LVC828ADGVR 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 true complemented buffering, not pass-through logic.

It features I_off circuitry that disables outputs during power-down to prevent backflow current, and supports mixed-voltage operation - inputs accept up to 5.5 V while V_CC operates as low as 1.65 V - enabling seamless level translation between 3.3-V and 5-V domains without external components.

Key Specifications

Pinout & Package

SN74LVC828ADGVR uses the TVSOP-24 (DGV) package: 4.4 mm × 6.6 mm body, 0.4 mm lead pitch, 1.2 mm max height, JEDEC MO-153 compliant, optimized for fine-pitch automated assembly and thermal performance (θ_JA = 86°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC827ADGVR and 74LVC244APW, the SN74LVC828ADGVR uniquely combines 10-bit width, inverting logic, dual active-low OE control, and 5.5-V input tolerance - making it irreplaceable for high-reliability mixed-voltage bus isolation where signal polarity and sequencing safety are design-critical.

Availability

SN74LVC828ADGVR is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, and medical imaging sensor interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant TVSOP packaging.

Supply support for SN74LVC828ADGVR 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 automotive-qualified products.

The SN74LVC828ADGVR belongs to TI's LVC logic family - engineered for low-voltage, high-speed, mixed-signal interfacing in industrial, automotive, and communications equipment where power efficiency, noise immunity, and voltage translation are essential.

FAQ

What is the recommended power-up sequence for SN74LVC828ADGVR to avoid bus contention?

TI recommends tying OE1 and OE2 to V_CC through pullup resistors (minimum value determined by driver sink capability) to ensure outputs remain in high-impedance until system initialization completes. This prevents unintended driving during power ramp-up. The SN74LVC828ADGVR's I_off feature further protects against backfeed if V_CC is unpowered while inputs are active.

Does SN74LVC828ADGVR support hot-swap operation in backplane systems?

Yes - the SN74LVC828ADGVR supports hot-swap via its I_off circuitry, which disables outputs and limits leakage to <±10 µA when V_CC is 0 V but inputs remain at 5.5 V. This prevents damaging current flow into unpowered modules, meeting key requirements for modular industrial backplanes and telecom line cards.

Can SN74LVC828ADGVR drive standard 50-pF TTL loads at 3.3 V?

Yes - the SN74LVC828ADGVR delivers ±24 mA output current at V_CC = 3.0 V, exceeding the ±20 mA required to drive 50-pF loads with fast edge rates. Electrical characteristics confirm VOL ≤ 0.55 V and VOH ≥ 2.2 V under these conditions, ensuring robust noise margins across temperature and voltage ranges.

What is the maximum clock frequency supported by SN74LVC828ADGVR in a data bus application?

Based on its 6.7 ns max propagation delay (t_pd) at 3.3 V, the SN74LVC828ADGVR supports reliable operation up to ~100 MHz for single-cycle bus transactions. For bidirectional or registered interfaces, derating to 75 MHz accounts for setup/hold margins and trace delays - verified in TI's application notes for LVC-family bus drivers.

Is SN74LVC828ADGVR pin-compatible with other 24-pin TVSOP logic devices?

No - SN74LVC828ADGVR has a unique 10-bit inverting buffer pinout with dual OE inputs and asymmetric pin allocation (A1–A10 on left, Y1–Y10 on right). While physical package dimensions match standard TVSOP-24 footprints, signal mapping differs from octal buffers (e.g., 74LVC244) or non-inverting variants (e.g., SN74LVC827ADGVR), requiring dedicated PCB layout.