Texas Instruments SN74AHC367DGVR

Overview

SN74AHC367 from Texas Instruments is a hex noninverting buffer/line driver with 3-state outputs, designed for bus-oriented applications requiring level translation and signal isolation. It operates across 2V–5.5V V_CC, delivers ±8 mA output drive at 5 V, supports −40°C to +85°C industrial temperature range, and features dual independent 3-state enables (1OE, 2OE) for grouped channel control - used in memory address buffering and microcontroller I/O expansion.

For engineers reviewing the SN74AHC367 datasheet, SN74AHC367 pinout, SN74AHC367 application, or SN74AHC367 equivalent, key selection criteria include its 3-state output architecture, rail-to-rail input compatibility, low propagation delay (as low as 3.4 ns at 5 V), high noise immunity (±2 kV HBM ESD rating), and SOIC-16/TSSOP-16 packaging options suitable for space-constrained digital interface designs.

Technical Context

The SN74AHC367 implements dual 3-state buffer groups: one 4-channel (1A1–1A4 → 1Y1–1Y4) and one 2-channel (2A1–2A2 → 2Y1–2Y2), each controlled by separate active-low enables (1OE, 2OE). Its AHC logic family ensures CMOS-compatible voltage thresholds and low static current (ICC ≤ 40 µA).

Each output transitions between full-rail VOH/VOL (e.g., VOH ≥ 4.4 V at VCC = 4.5 V, VOL ≤ 0.1 V at IOL = 50 µA) and high-impedance state within nanoseconds (tPZH/tPLZ ≤ 8.5 ns at 5 V, CL = 15 pF), enabling clean bus sharing without contention. Input transition rate tolerance (≥20 ns/V at 5 V) supports robust operation with slow-slew signals.

Key Specifications

Pinout & Package

SN74AHC367DGVR uses a 16-pin TVSOP (DGV) package measuring 5.00 mm × 6.4 mm (body: 5.00 mm × 4.4 mm), optimized for high-density PCB layouts with 0.65 mm lead pitch and 1.2 mm max height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC367APWR and 74AHC244PW, the SN74AHC367 offers optimal trade-off between wide supply range, grouped 3-state control, and industrial-grade noise immunity - making it preferred for mixed-voltage industrial controllers where reliability outweighs marginal speed gains.

Availability

SN74AHC367 is available at Aetrix Electronics and suitable for industrial automation, embedded instrumentation, and communication module design requiring stable component supply across extended temperature ranges and multi-voltage system integration.

Supply support for SN74AHC367 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 logic families.

The SN74AHC367 belongs to TI's advanced high-speed CMOS (AHC) logic portfolio, engineered for robust performance in bus interface, memory addressing, and I/O expansion applications demanding low power, wide voltage operation, and industrial temperature resilience.

FAQ

What is the maximum output current capability of the SN74AHC367 at 3.3 V supply?

The SN74AHC367 delivers ±4 mA output current at V_CC = 3.3 V ± 0.3 V, as specified in the Recommended Operating Conditions table. This value ensures reliable driving of standard CMOS loads and up to 10 LS-TTL inputs while maintaining VOH ≥ 2.58 V and VOL ≤ 0.44 V. Exceeding this current may cause output voltage degradation or thermal stress beyond rated limits.

Can the SN74AHC367 operate with a 2.5 V supply voltage?

Yes, the SN74AHC367 is fully specified for operation at 2.5 V, falling within its 2 V to 5.5 V V_CC range. At 2.5 V, it maintains VIH ≥ 1.7 V and VIL ≤ 0.75 V, providing adequate noise margins. Propagation delay increases to ~6.2 ns (typical) at CL = 15 pF, and output drive reduces to ±2.5 mA - sufficient for most low-voltage interface applications.

How should unused inputs be handled on the SN74AHC367?

All unused inputs on the SN74AHC367 must be tied to either V_CC or GND to prevent floating states that cause increased ICC, erratic outputs, or ESD susceptibility. For example, if only three of six buffers are used, tie unused A-inputs to GND (for LOW default) or V_CC (for HIGH default), and connect corresponding OE pins to V_CC to disable those outputs. Never leave inputs unconnected.

Is the SN74AHC367 pin-compatible with older 74HC367 devices?

No, the SN74AHC367 is not pin-compatible with legacy 74HC367 variants due to differences in electrical characteristics and timing behavior - though both share identical pinouts and package footprints. The AHC family offers faster propagation, lower power, and improved noise immunity, but requires verification of timing margins and voltage thresholds in existing HC-based designs before substitution.

What is the recommended bypass capacitor for the SN74AHC367?

A 0.1 µF ceramic capacitor is recommended for bypassing the V_CC pin of the SN74AHC367, placed as close as possible (<1 mm) to the pin with short, low-inductance traces. For systems with high-frequency noise, paralleling with a 1 µF capacitor improves broadband suppression. This minimizes supply droop during output switching and prevents false triggering caused by ground bounce.