Texas Instruments SN74LVC827ADW

Overview

SN74LVC827ADW from Texas Instruments is a 10-bit noninverting buffer/driver with 3-state outputs, designed for 1.65-V to 3.6-V VCC operation. It features dual active-low output-enable inputs (OE1, OE2), 5.5-V-tolerant inputs, 24-mA output drive at 3.3 V, and 6.7-ns propagation delay at 3.3 V - enabling high-speed bus interfacing in mixed-voltage systems such as LED display drivers and telecom backplanes.

For engineers reviewing the SN74LVC827ADW datasheet, SN74LVC827ADW pinout, SN74LVC827ADW application, or SN74LVC827ADW equivalent, key selection criteria include its Ioff-enabled live insertion support, ±50-mA output current rating, 3.3-V/5-V mixed-mode signal compatibility, and SOIC-24 package thermal performance (RθJA = 65.1°C/W).

Technical Context

The SN74LVC827ADW implements a dual-gated 3-state control architecture: both OE1 and OE2 must be low to enable all ten Y outputs; either high forces all outputs into high-impedance. Its CMOS design supports true data buffering without inversion, and input tolerance up to 5.5 V enables level translation from 5-V logic to 3.3-V buses.

It integrates Ioff circuitry that disables outputs and blocks current flow when VCC = 0 V, supporting partial-power-down and hot-swap applications. Latch-up immunity exceeds 250 mA per JESD17, and ESD protection meets 2000-V HBM, 1000-V CDM, and 200-V MM standards.

Key Specifications

Pinout & Package

SN74LVC827ADW uses a 24-pin SOIC (DW) package with 15.40 mm × 7.50 mm body size and 1.27-mm lead pitch. Thermal resistance is RθJA = 65.1°C/W, suitable for moderate-power-density PCB layouts without forced airflow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC827APW, SN74LVC827ADW delivers superior thermal performance in high-power-density server or telecom applications; compared with SN74LVCH16244ADGGR, it provides identical 10-bit functionality in a smaller, lower-cost SOIC package with simpler dual-OE control - ideal for fixed-width bus isolation.

Availability

SN74LVC827ADW is available at Aetrix Electronics and suitable for LED display drivers, telecom backplane interfaces, and industrial I/O expander designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for SN74LVC827ADW 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 connectivity technologies, with decades of experience in logic IC design and industrial-grade qualification.

The SN74LVC827ADW belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for high-speed, low-power, mixed-voltage interfacing in industrial automation, communications infrastructure, and computing platforms.

FAQ

What is the maximum output current per pin for SN74LVC827ADW?

The SN74LVC827ADW supports ±24 mA per output pin at VCC = 3.3 V, as specified in the Electrical Characteristics table under IOL and IOH conditions. This rating applies across the full operating temperature range (–40°C to +125°C) and enables direct driving of multiple CMOS loads or standard LEDs without external buffers. Exceeding ±50 mA per pin risks permanent damage per Absolute Maximum Ratings.

Does SN74LVC827ADW support 5-V input signals while operating at 3.3-V VCC?

Yes, SN74LVC827ADW accepts input voltages up to 5.5 V regardless of VCC level (1.65 V to 3.6 V), enabling reliable down-translation from 5-V logic families. This is explicitly confirmed in the Features section and Recommended Operating Conditions table (VI = 0 to 5.5 V). No external clamping or level-shifting circuitry is required.

How does the dual output-enable (OE1/OE2) structure function in SN74LVC827ADW?

In SN74LVC827ADW, both OE1 and OE2 are active-low inputs wired to a 2-input AND gate controlling all ten outputs. All Y outputs enter high-impedance state if either OE1 or OE2 is high; only when both are low do outputs reflect A1–A10 inputs. This architecture allows flexible bus arbitration - e.g., one OE for system-level control, the other for local module enable.

What thermal considerations apply to SN74LVC827ADW in continuous 24-mA operation?

At 3.3 V and 24-mA load per output (10 channels), SN74LVC827ADW dissipates ~1.2 W. With RθJA = 65.1°C/W (SOIC-24), junction temperature rise is ~78°C above ambient. For reliable operation at 125°C max ambient, ensure board copper area, airflow, or thermal vias limit total ΔT to ≤47°C - verified via thermal simulation or IR imaging per JEDEC JESD51 standards.

Is SN74LVC827ADW compatible with hot-swap or live-insertion systems?

Yes, SN74LVC827ADW incorporates Ioff circuitry that disables outputs and blocks current flow when VCC = 0 V, satisfying JEDEC JESD78 requirements for live insertion. This feature prevents damaging back-current from powered backplanes into unpowered cards - validated by ±10 μA Ioff specification at VI/VO = 5.5 V and VCC = 0 V.