Texas Instruments SN74AHC367DBR

Overview

SN74AHC367 from Texas Instruments is a hex noninverting buffer/line driver with 3-state outputs, designed for 2V–5.5V operation in bus-interface and signal-routing applications. It features dual independent output-enable controls (1OE, 2OE), ±8 mA drive strength at 5 V, propagation delays as low as 3.4 ns (VCC = 5 V, CL = 15 pF), and operates across –40°C to +85°C.

For engineers reviewing the SN74AHC367 datasheet, SN74AHC367 pinout, SN74AHC367 application, or SN74AHC367 equivalent, key selection considerations include its dual 3-state enable architecture, rail-to-rail input compatibility, high noise immunity (±2 kV HBM ESD), and SOIC-16/TSSOP-16 packaging options suitable for space-constrained industrial control and embedded communication modules.

Technical Context

The SN74AHC367 implements six independent noninverting buffers grouped into two functional blocks (Group 1: pins 1–7,9–10; Group 2: pins 11–15), each controlled by a dedicated active-low output-enable input (1OE, 2OE). Its CMOS AHC logic family ensures low static current (ICC ≤ 40 µA) and fast switching with defined timing margins across voltage and temperature.

Each buffer supports bidirectional signal flow only when enabled - outputs enter high-impedance state when OE is high, isolating downstream loads. Input thresholds scale with VCC (VIH = 0.7×VCC min, VIL = 0.3×VCC max), enabling reliable interfacing between mixed-voltage domains without level shifters.

Key Specifications

Pinout & Package

SN74AHC367 is available in SOIC-16 (D), TSSOP-16 (PW), and PDIP-16 (N) packages. The D package measures 9.9 mm × 6.0 mm (body: 9.9 mm × 3.9 mm); PW package measures 5.0 mm × 6.4 mm (body: 5.0 mm × 4.4 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AHCT367 and 74LVC367, the SN74AHC367 delivers balanced performance across voltage flexibility, noise margin, and thermal robustness - making it the default choice for general-purpose 3-state buffering where VCC scaling and industrial reliability are primary concerns.

Availability

SN74AHC367 is available at Aetrix Electronics and suitable for industrial bus interface, LED indicator control, motor controller reset logic, and communication module translation requiring stable component supply and long-term lifecycle support.

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 for industrial, automotive, and communications markets.

The SN74AHC367 belongs to TI's advanced high-speed CMOS (AHC) logic family, engineered for low-power, high-noise-immunity digital interfacing in harsh environments where signal integrity and supply voltage flexibility are critical.

FAQ

What is the maximum operating frequency supported by the SN74AHC367?

The SN74AHC367 does not specify a maximum clock frequency in its datasheet, as it is a combinational buffer-not a clocked device. However, based on its propagation delay (tPLH/tPHL = 3.4 ns min at 5 V, CL = 15 pF), the SN74AHC367 can reliably support signal toggle rates up to approximately 100 MHz in well-designed PCB layouts with controlled impedance and proper termination.

Can the SN74AHC367 be used with a 3.3 V supply and 5 V inputs?

Yes, the SN74AHC367 supports VI = 0–5.5 V regardless of VCC, so it safely accepts 5 V inputs while powered from 3.3 V. This rail-to-rail input capability eliminates the need for external level shifters in mixed-voltage systems, and the SN74AHC367 maintains full output drive strength (±4 mA at 3.3 V) and timing specifications under this condition.

How should unused inputs be handled on the SN74AHC367?

All unused inputs on the SN74AHC367 must be tied to a valid logic level-either VCC or GND-to prevent floating states that cause excessive current draw, oscillation, or undefined outputs. For example, if only three of six buffers are used, the remaining three A-inputs should be connected to GND (for LOW) or VCC (for HIGH), depending on desired default output behavior when enabled.

Is the SN74AHC367 compatible with lead-free reflow soldering processes?

Yes, the SN74AHC367 variants SN74AHC367DR (SOIC) and SN74AHC367PWR (TSSOP) are RoHS-compliant and rated for lead-free reflow with MSL Level-1 (unlimited floor life) and peak reflow temperature of 260°C. The NIPDAU or NIPDAU/SN lead finish ensures reliable wetting and joint formation under standard JEDEC J-STD-020 profiles.

What is the recommended bypass capacitor for the SN74AHC367?

Texas Instruments recommends a 0.1 µF ceramic capacitor placed as close as possible (<3 mm) to the VCC pin (pin 16) and GND (pin 8) of the SN74AHC367. For improved high-frequency noise suppression, this may be paralleled with a 1 µF capacitor - both must use X7R or better dielectric and be mounted directly on the same PCB layer as the device to minimize inductance.