Texas Instruments SN74LV367AD

Overview

SN74LV367AD from Texas Instruments is a hex noninverting buffer/line driver with 3-state outputs, designed for bus-oriented applications including memory address driving and clock distribution. It operates from 2 V to 5.5 V, delivers ≤7 ns propagation delay at 5 V, supports mixed-mode voltage translation, and features balanced CMOS outputs capable of ±35 mA drive. It is used in LED matrix control and 7-segment display interfaces.

For engineers reviewing the SN74LV367AD datasheet, SN74LV367AD pinout, SN74LV367AD application, or SN74LV367AD equivalent, key selection criteria include 3-state output timing (tpd, ten, tdis), VCC operating range (2–5.5 V), Ioff partial power-down capability, latch-up immunity (>250 mA), and SOIC-16 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The SN74LV367AD implements dual independent 3-state buffer groups: one 4-line (pins 1–7, 9–10) and one 2-line (pins 11–15), each controlled by active-low OE inputs (1OE on pin 1, 2OE on pin 15). Its logic diagram confirms noninverting signal path from A inputs to Y outputs, with high-impedance state asserted when OE is high.

It integrates partial power-down (Ioff) circuitry enabling safe operation during VCC = 0 V, clamp diodes on all I/O pins for ESD robustness (HBM ±2000 V), and balanced push-pull outputs that source/sink symmetric current-critical for minimizing ground bounce (VOLP < 0.8 V) and VOH undershoot (VOHV > 2.3 V) in noise-sensitive digital systems.

Key Specifications

Pinout & Package

SN74LV367AD is packaged in a 16-pin SOIC (D) body measuring 9.9 mm × 3.90 mm with 1.27 mm lead pitch. The package is RoHS-compliant, moisture sensitivity level 1, and rated for reflow up to 260°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex buffer with 3-state output applications.

Compared with SN74LVC367A and 74AC367, the SN74LV367AD uniquely combines Ioff-enabled partial power-down, 5 V-tolerant inputs, and industrial-grade latch-up immunity-making it the preferred choice for robust, multi-rail industrial control and display interface designs where reliability under power sequencing stress is critical.

Availability

SN74LV367AD is available at Aetrix Electronics and suitable for industrial automation, LED signage, and embedded display interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for SN74LV367AD 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 delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

The SN74LV367AD belongs to TI's LV-A family of low-voltage, 3-state logic devices engineered for robust bus interfacing, memory expansion, and display driving in noise-sensitive industrial environments.

FAQ

What is the maximum propagation delay of the SN74LV367AD at 3.3 V supply?

The SN74LV367AD has a maximum propagation delay (tpd) of 10 ns at VCC = 3.3 V with CL = 15 pF and TA = 25°C, and 13.5 ns with CL = 50 pF. This value is measured from input transition (50% VCC) to output transition (50% VCC) and reflects worst-case timing for design margining in synchronous bus applications. The SN74LV367AD datasheet specifies this in Section 6.7.

Does the SN74LV367AD support 5 V-tolerant inputs when powered from 3.3 V?

Yes, the SN74LV367AD supports input voltages up to 5.5 V regardless of VCC level, enabling true 5 V-to-3.3 V down-translation without external level shifters. This is confirmed in Section 6.3 (Recommended Operating Conditions) and Section 9.1 (Application Information) of the SN74LV367AD datasheet, where VI is specified as 0–5.5 V.

What is the purpose of the Ioff feature in the SN74LV367AD?

The Ioff feature in the SN74LV367AD disables all outputs and limits leakage current to ±5 µA when VCC = 0 V, preventing back-driving of powered circuitry during hot-swap or partial power-down sequences. This protects downstream components and ensures safe power sequencing in modular industrial systems using the SN74LV367AD as a bus gate.

Can the SN74LV367AD drive LEDs directly without current-limiting resistors?

No - while the SN74LV367AD can source/sink up to ±35 mA per output, external current-limiting resistors are required to set precise LED current and prevent thermal overstress. The SN74LV367AD's VOL and VOH specs (e.g., VOL ≤ 0.55 V at 16 mA) define voltage drop under load, but resistor selection must account for forward voltage, supply rail, and desired brightness. Direct drive without resistors risks exceeding absolute max ratings.

How should unused inputs be handled on the SN74LV367AD?

All unused inputs on the SN74LV367AD must be tied to a valid logic level - either VCC or GND - to prevent floating states that cause increased ICC, noise coupling, or undefined output behavior. Section 6.3 Note (1) and Section 9.4.1 of the SN74LV367AD datasheet explicitly require this. Pull-up/pull-down resistors (e.g., 10 kΩ) are recommended for unused OE or A inputs to ensure deterministic startup and EMI resilience.