Texas Instruments SN74LVC827APWR

Overview

SN74LVC827APWR from Texas Instruments is a 10-bit noninverting buffer/driver with dual 3-state enable inputs (OE1, OE2), designed for 1.65 V to 3.6 V V_CC operation. It delivers ±24 mA output drive at 3.3 V, supports 5.5-V-tolerant inputs, and features I_off for live insertion and partial-power-down protection. Used in LED display drivers and high-speed bus interfaces where level translation and high fanout are required.

For engineers reviewing the SN74LVC827APWR datasheet, SN74LVC827APWR pinout, SN74LVC827APWR application, or SN74LVC827APWR equivalent, key selection criteria include 3-state timing (t_dis = 6.7 ns max at 3.3 V), 5.5-V input tolerance enabling mixed-voltage interfacing, I_off support for hot-swap systems, and TSSOP-24 package compatibility with space-constrained PCB layouts.

Technical Context

The SN74LVC827APWR implements a dual-input AND-gated 3-state control architecture: outputs go high-impedance if either OE1 or OE2 is high. Its true (noninverting) logic path drives ten A-to-Y channels with matched propagation delay (t_pd = 6.7 ns typical at 3.3 V, –40°C to 85°C).

Input voltage tolerance up to 5.5 V enables direct interfacing with 5-V logic while operating at 3.3 V or lower. The I_off feature disables outputs and blocks current flow when V_CC = 0 V, preventing back-drive damage during power sequencing or hot-plug events.

Key Specifications

Pinout & Package

TSSOP-24 package (PW), body size 6.95 mm × 8.3 mm × 1.2 mm max height, lead pitch 0.65 mm, 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 applications.

Compared with SN74LVC244APWR and SN74LVCH16244ADGGR, the SN74LVC827APWR uniquely balances exact 10-bit width, 5.5-V input tolerance, and single-supply simplicity - making it optimal for fixed-width bus expansion where mixed-voltage interfacing and compact TSSOP packaging are critical.

Availability

SN74LVC827APWR is available at Aetrix Electronics and suitable for LED display drivers, network switch interfaces, telecom line card signal routing, and motor control I/O expansion requiring stable component supply across industrial temperature ranges.

Supply support for SN74LVC827APWR 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 SN74LVC827APWR belongs to TI's LVC logic family, engineered for low-voltage, high-speed, mixed-signal interfacing in space- and power-constrained industrial and communications equipment.

FAQ

What is the maximum output current per channel for SN74LVC827APWR?

The SN74LVC827APWR supports ±24 mA output current per Y channel at V_CC = 3.3 V, as specified in the Electrical Characteristics table under I_OL and I_OH. This rating applies across the full operating temperature range (–40°C to +125°C) and enables direct driving of multiple TTL loads or LEDs without external buffers. Exceeding this limit risks thermal overstress or parametric shift.

Does SN74LVC827APWR support 5-V logic interfacing?

Yes, SN74LVC827APWR inputs tolerate voltages up to 5.5 V regardless of V_CC level (1.65 V to 3.6 V), allowing direct connection to 5-V CMOS/TTL outputs without level shifters. This is explicitly confirmed in the Features section and Recommended Operating Conditions table of the datasheet. Outputs remain referenced to V_CC, so 5-V signaling occurs only at the input side.

How does the dual output-enable (OE1/OE2) logic work on SN74LVC827APWR?

The SN74LVC827APWR uses an internal 2-input AND gate for 3-state control: both OE1 and OE2 must be low for outputs Y1–Y10 to be active. If either OE1 or OE2 is high, all outputs enter high-impedance state. This architecture enables hierarchical bus control - for example, OE1 can serve as global enable while OE2 acts as local channel-group select - enhancing system-level arbitration flexibility.

Is SN74LVC827APWR suitable for hot-swap applications?

Yes, SN74LVC827APWR includes I_off circuitry that disables outputs and blocks current flow when V_CC = 0 V, satisfying key requirements for hot-swap and partial-power-down systems. This feature prevents back-driving powered-down sections and is validated per JESD78 latch-up testing (>250 mA). Proper decoupling and OE pull-up design are required for robust implementation.

What package type and dimensions does SN74LVC827APWR use?

SN74LVC827APWR uses the TSSOP-24 (PW) package: 6.95 mm × 8.3 mm body size, 1.2 mm maximum height, 0.65 mm lead pitch, and 24-pin layout. Pin 1 is located in Quadrant Q1 per tape-and-reel orientation standards. The package is RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating, supporting standard reflow profiles without moisture sensitivity concerns.