onsemi MC74F365D

Overview

MC74F365D from ON Semiconductor is a hex noninverting buffer/driver with dual 3-state enable control (OE1, OE2), designed for bus-oriented applications requiring high-speed TTL-compatible logic interfacing. It operates at 5 V supply, delivers ±15 mA output drive, supports 7 ns max propagation delay, and features high-impedance outputs when disabled.

For engineers reviewing the MC74F365D datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 3-state timing (tPZH ≤ 10 ns, tPHZ ≤ 7 ns), DC output drive (IOL = 64 mA, IOH = –15 mA), input voltage thresholds (VIH = 2.0 V, VIL = 0.8 V), and SOIC-16 package compatibility in industrial temperature range (0°C to +70°C).

Technical Context

The MC74F365D implements six independent noninverting buffer channels, each with two-level enable logic: both OE1 and OE2 must be LOW to activate outputs; any HIGH on either enable forces all six outputs into high-impedance (Z) state. This dual-enable architecture enables hierarchical bus control in multi-master systems.

It uses FAST Schottky TTL technology, ensuring compatibility with standard TTL and LS-TTL logic families while delivering improved speed over LS variants - typical tPLH/tPHL of 4.5/5.5 ns at 25°C with 50 pF load, and full AC characterization across 0°C to +70°C ambient.

Key Specifications

Pinout & Package

MC74F365D is housed in a 16-pin Small Outline Integrated Circuit (SOIC) package per Case 751B-03, with 1.27 mm pitch, 10.3 mm × 7.5 mm body size, and gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74F365N and MC74F365N, the MC74F365D offers optimized SOIC-16 mechanical fit (Case 751B-03), consistent with modern SMT production lines, while maintaining identical AC/DC performance and enabling drop-in replacement where footprint matches - no logic or timing redesign required.

Availability

MC74F365D is available at Aetrix Electronics and suitable for microprocessor bus interface, memory address latching, programmable logic interfacing, and industrial I/O expansion requiring stable component supply and long-term manufacturability.

Supply support for MC74F365D 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

ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and discrete components for automotive, industrial, and communications markets.

The MC74F365D belongs to the FAST TTL logic family, engineered for high-speed digital systems requiring TTL-compatible interface buffering with deterministic 3-state timing and industrial-grade reliability.

FAQ

What is the maximum operating temperature range for the MC74F365D?

The MC74F365D is rated for an operating ambient temperature range of 0°C to +70°C, conforming to the 74-series specification. This range is fully characterized for all DC and AC parameters including propagation delay, enable/disable timing, and output drive strength - no derating is required within this envelope. The MC74F365D does not support extended military or automotive temperature grades.

Does the MC74F365D support true bidirectional data flow?

No, the MC74F365D is a unidirectional noninverting buffer - it has dedicated input and output pins with no internal feedback or direction control. Data flows only from pins 1–6 to pins 7–12. For bidirectional bus transceivers, consider alternatives like the MC74F245 or SN74F245. The MC74F365D's dual OE pins provide independent gating but do not change signal direction.

What is the recommended decoupling for the MC74F365D VCC pin?

A minimum 0.1 µF ceramic capacitor placed within 1 cm of the MC74F365D VCC (pin 14) and GND (pin 13) is required to suppress high-frequency switching noise. For systems with multiple MC74F365D devices or heavy bus activity, add a bulk 4.7 µF tantalum capacitor per 5–10 ICs. Poor decoupling causes VOH/VOL degradation and timing jitter exceeding datasheet limits.

Can OE1 and OE2 be tied together for single-enable operation of the MC74F365D?

Yes, OE1 (pin 15) and OE2 (pin 16) may be connected to a common control signal, enabling all six buffers simultaneously. This configuration simplifies logic design when full-hex activation is sufficient. However, doing so forfeits the MC74F365D's key advantage: independent control of upper (A–C) and lower (D–F) buffer groups for partial bus management.

Is the MC74F365D pin-compatible with the MC74F366D?

No, the MC74F365D and MC74F366D share identical pinout and package but differ functionally: MC74F365D is noninverting, while MC74F366D is inverting. Swapping them without logic inversion elsewhere will cause functional failure. Both parts use the same SOIC-16 footprint and electrical specs, but their truth tables and output polarity are mutually exclusive.