Texas Instruments SN74HC367PWT

Overview

SN74HC367PWT from Texas Instruments is a hex buffer and line driver IC with 3-state outputs, organized as two independent banks (4-channel + 2-channel), each controlled by its own active-low output-enable pin (1OE, 2OE). It operates from 2 V to 6 V, delivers ±6 mA output drive at 5 V, exhibits typical propagation delay of 10 ns, and supports high-density bus interfacing in memory address and clock distribution systems.

For engineers reviewing the SN74HC367PWT datasheet, SN74HC367PWT pinout, SN74HC367PWT application, or SN74HC367PWT equivalent, this device is selected for low-power, 3-state bus buffering where precise enable control, TTL-load compatibility (up to 15 LSTTL loads), and wide supply voltage tolerance are required in industrial and embedded digital systems.

Technical Context

The SN74HC367PWT implements true (non-inverting) logic buffers with dual independent 3-state control - Bank 1 (pins 1,2,3,4,5,6,7,9,10) enables four drivers via 1OE (pin 1), while Bank 2 (pins 11,12,13,14,15) enables two drivers via 2OE (pin 15). Each output enters high-impedance state when its respective OE is high.

It uses silicon-gate CMOS technology, ensuring low static current (≤80 µA ICC max), low input current (≤1 µA), and robust noise immunity across its full operating range (–40°C to +85°C). Switching performance is characterized at CL = 50 pF, with tpd = 10 ns (typ) and tt = 6 ns (typ) at VCC = 6 V.

Key Specifications

Pinout & Package

TSSOP-16 package (PW), body size 5.00 mm × 4.40 mm, 1.2 mm max height, lead pitch 0.65 mm, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC367PWT, SN74HCT367PWR offers TTL-compatible inputs at the cost of higher static power, while 74LVC125APW delivers higher drive in a smaller footprint but abandons the dual-bank architecture essential for independent bus segmentation.

Availability

SN74HC367PWT is available at Aetrix Electronics and suitable for industrial control systems, embedded memory interfaces, and clock distribution networks requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for SN74HC367PWT 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 over 90 years of innovation in industrial, automotive, and communications markets.

The SN74HC367PWT belongs to TI's 74HC logic family, designed for high-speed, low-power, 3-state bus interface applications in memory, microcontroller, and FPGA-based systems where signal integrity and enable control granularity are critical.

FAQ

What is the function of the two output-enable pins on the SN74HC367PWT?

The SN74HC367PWT features two independent active-low output-enable pins: 1OE (pin 1) controls the four-channel Bank 1 (1A1–1A4 → 1Y1–1Y4), and 2OE (pin 15) controls the two-channel Bank 2 (2A1–2A2 → 2Y1–2Y2). This architecture allows asynchronous enable/disable of address and control signal groups without shared timing constraints, improving bus arbitration flexibility in complex digital systems. Each bank enters high-impedance state when its respective OE is high.

Can the SN74HC367PWT operate reliably at 3.3 V supply voltage?

Yes, the SN74HC367PWT is fully specified for operation from 2 V to 6 V, including 3.3 V nominal systems. At VCC = 3.3 V, it maintains guaranteed VOH ≥ 3.15 V (VIH min) and VOL ≤ 0.33 V (VIL max), supports 15 LSTTL loads, and delivers typical tpd = 17 ns (CL = 50 pF). Its CMOS inputs draw ≤1 µA, making it ideal for mixed-voltage interfacing between 3.3 V MCUs and 5 V peripherals.

What is the maximum capacitive load the SN74HC367PWT can drive while maintaining specified timing?

The SN74HC367PWT switching characteristics are characterized at CL = 50 pF and CL = 150 pF. At VCC = 6 V and CL = 150 pF, typical tpd remains ≤25 ns and tt ≤13 ns - well within most 10–20 MHz bus timing budgets. Driving loads beyond 150 pF increases propagation delay nonlinearly; for >200 pF, external series termination or buffer staging is recommended to maintain signal integrity and meet setup/hold margins.

Is the SN74HC367PWT pin-compatible with other TSSOP-16 logic devices?

The SN74HC367PWT uses a standard TSSOP-16 footprint (PW package, 0.65 mm pitch, 5.00 mm × 4.40 mm body) compliant with JEDEC MO-153. While physical pin spacing matches generic TSSOP-16 devices, electrical pin functions (e.g., dual OE, bank-specific I/O mapping) are unique to the '367 family. Direct substitution with non-'367 logic (e.g., '125, '244) requires schematic and layout verification due to differing I/O configurations and enable logic polarity.

How does the SN74HC367PWT handle unused inputs?

All unused inputs on the SN74HC367PWT must be terminated to a valid logic level - either VCC or GND - to prevent floating nodes that cause excessive ICC, oscillation, or undefined output states. TI recommends tying unused A inputs directly to VCC or GND using short traces; leaving them unconnected violates the Recommended Operating Conditions and may result in erratic behavior, especially under temperature variation or EMI exposure. The device does not include internal pull-ups or pull-downs.