Texas Instruments SN74LV367ADR

Overview

SN74LV367ADR 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 3-state outputs for reliable bus sharing in LED matrix and 7-segment display control systems.

For engineers reviewing the SN74LV367ADR datasheet, SN74LV367ADR pinout, SN74LV367ADR application, or SN74LV367ADR equivalent, this page provides verified functional roles, real-world timing behavior under 15 pF and 50 pF loads, confirmed 3-state enable timing (ten/tdis), absolute maximum ratings, and validated alternatives for bus interface upgrades requiring low ground bounce (<0.8 V) and controlled undershoot (>2.3 V).

Technical Context

The SN74LV367ADR implements dual independent 3-state buffer groups: one 4-line (1A1–1A4 → 1Y1–1Y4) and one 2-line (2A1–2A2 → 2Y1–2Y2), each controlled by its own active-low output-enable input (1OE, 2OE). Its logic diagram confirms noninverting signal path with no internal inversion or latching-outputs directly follow inputs when enabled.

It uses standard CMOS push-pull output stages with I_OH/I_OL up to ±16 mA at 5 V, supports partial power-down (I_off ≤ 5 µA), and includes input clamp diodes only on negative side per JESD78. No internal ESD protection beyond HBM ±2000 V is integrated.

Key Specifications

Pinout & Package

SN74LV367ADR is supplied in a 16-pin SOIC (D) package with nominal body size 9.0 mm × 3.90 mm and 1.27 mm pitch. Pin 1 orientation follows Q1 quadrant assignment per tape-and-reel specification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV367ADR, SN74LVC6T245RGYR adds bidirectional translation but increases complexity and cost for unidirectional use cases, while SN74AHC1G125DBVR offers speed and size advantages at the expense of integration density and bus-sharing capability.

Availability

SN74LV367ADR is available at Aetrix Electronics and suitable for industrial bus interface, LED matrix control, and 7-segment display applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for SN74LV367ADR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions across industrial, automotive, and personal electronics markets.

The SN74LV367ADR belongs to TI's LV-A family of low-voltage, 3-state logic devices engineered specifically for high-density bus interfacing, memory expansion, and display driving where noise immunity, voltage flexibility, and predictable 3-state behavior are critical.

FAQ

What is the maximum clock frequency supported by SN74LV367ADR in a bus application?

The SN74LV367ADR does not operate as a clocked device but functions as a combinatorial buffer. Its 7 ns maximum propagation delay at 5 V and 15 pF load implies reliable operation in systems with bus toggle rates up to approximately 14 MHz, assuming sufficient setup/hold margins. For synchronous bus designs, timing analysis must include controller delays and trace propagation; SN74LV367ADR itself imposes no inherent frequency limit beyond its specified t_pd and load-dependent switching characteristics.

Can SN74LV367ADR drive LEDs directly without current-limiting resistors?

No, SN74LV367ADR cannot drive LEDs directly without external current-limiting resistors. While it supports ±16 mA output current at 5 V, LED forward voltage drop and desired brightness require precise current control. Omitting resistors risks exceeding absolute maximum ratings (±35 mA continuous), causing thermal stress or premature failure. Each output must include a series resistor sized per LED V_F, supply voltage, and target current - for example, a 150 Ω resistor limits current to ~20 mA at 5 V with a typical red LED.

Does SN74LV367ADR support hot-swap or live-insertion into a powered system?

SN74LV367ADR incorporates partial power-down (I_off) functionality that limits output leakage to ≤5 µA when VCC = 0 V, reducing risk of backfeeding. However, it lacks dedicated hot-swap circuitry such as slew-rate control or undervoltage lockout. Insertion while VCC is active may cause transient glitches or bus contention if OE states are undefined. For true hot-swap compliance, external enable sequencing and current-limiting circuitry are required - SN74LV367ADR alone does not guarantee safe live insertion.

How does SN74LV367ADR handle floating inputs, and what is the recommended termination?

All unused inputs of SN74LV367ADR must be terminated to a defined logic level - either VCC or GND - to prevent oscillation, increased power consumption, or erratic output behavior. Floating CMOS inputs bias near threshold voltage, causing both output transistors to partially conduct. TI recommends tying unused inputs directly to VCC or GND using short traces; pullup/pulldown resistors are unnecessary unless board-level constraints demand them. Leaving any input unconnected violates recommended operating conditions and may compromise SN74LV367ADR reliability over temperature and voltage extremes.

Is SN74LV367ADR pin-compatible with older 74LS367 or 74HC367 devices?

SN74LV367ADR shares identical pinout (16-pin SOIC) and logic function with 74LS367 and 74HC367, but is not fully pin-compatible due to differing electrical behavior. Key differences include: LV367A's 5 V-tolerant inputs versus LS/HC's rail-referenced inputs; LV367A's lower drive strength (±16 mA vs. LS's ±8 mA or HC's ±25 mA); and distinct DC/AC timing specs. While PCB layout may accommodate replacement, system-level validation of timing margins, noise immunity, and power integrity is required before substituting SN74LV367ADR for LS/HC variants.