Texas Instruments SN74HC365NG4

Overview

SN74HC365NG4 from Texas Instruments is a hex noninverting buffer/line driver with dual 3-state outputs, designed for bus interface and memory address driving in industrial control and embedded systems. It operates from 2 V to 6 V, delivers ±6 mA output drive at 5 V, exhibits 10 ns typical propagation delay, and draws ≤80 µA ICC - enabling low-power, high-density logic interfacing.

For engineers reviewing the SN74HC365NG4 datasheet, SN74HC365NG4 pinout, SN74HC365NG4 application, or SN74HC365NG4 equivalent, this page provides verified functional mode behavior, 3-state timing parameters (ten/tdis), thermal resistance (RθJA = 67°C/W), input/output voltage thresholds (VIH/VIL), and real-world bus-driving capability up to 15 LSTTL loads.

Technical Context

The SN74HC365NG4 implements six independent CMOS buffer channels, each with true (noninverting) output logic and dual-gated 3-state control via OE1 and OE2 pins. Both enable inputs must be low for data pass-through; either high forces all Y outputs into high-impedance state - supporting bidirectional bus arbitration without external logic.

Its HC-family silicon ensures compatibility with TTL input thresholds while delivering CMOS-level power efficiency. The device supports wide VCC range (2–6 V), maintains stable VOH/VOL across temperature (−40°C to +85°C), and features low input current (≤1 µA) and low power dissipation capacitance (35 pF per buffer).

Key Specifications

Pinout & Package

SN74HC365NG4 is supplied in 16-pin PDIP (Plastic Dual In-line Package) with 19.31 mm × 6.35 mm body size and through-hole mounting. Pin 1 is located at the left end of the top row, identified by a notch or dot marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC365NG4, SN74HCT365N improves input noise margin in noisy 5 V environments but shares identical thermal performance and drive strength, while 74LCX365M offers faster switching at lower voltage but sacrifices 5 V compatibility and PDIP availability.

Availability

SN74HC365NG4 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and legacy system upgrades requiring stable component supply, long-term obsolescence management, and RoHS-compliant through-hole logic buffers.

Supply support for SN74HC365NG4 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 SN74HC365NG4 belongs to TI's 74HC logic family, engineered for high noise immunity, low power, and seamless integration into bus-oriented digital systems requiring reliable 3-state buffering and address/data line isolation.

FAQ

What is the maximum operating temperature for SN74HC365NG4?

The SN74HC365NG4 is rated for operation from −40°C to +85°C ambient temperature. This industrial-grade range is validated per TI's recommended operating conditions and supported by thermal metrics including RθJA = 67°C/W for the PDIP package. Derating applies above 70°C ambient if power dissipation exceeds 100 mW.

Does SN74HC365NG4 support 3.3 V logic levels?

Yes, SN74HC365NG4 fully supports 3.3 V operation: its recommended VCC range includes 3.3 V, input thresholds scale proportionally (VIH ≈ 2.31 V, VIL ≈ 0.99 V), and output drive remains robust (±4 mA typical). It interfaces directly with 3.3 V microcontrollers without level translation.

How do OE1 and OE2 function in SN74HC365NG4?

In SN74HC365NG4, OE1 controls Y1–Y3 and OE2 controls Y4–Y6. Both are active-low: outputs go high-impedance when either OE pin is high. When both are low, all six buffers pass A→Y noninverted data. This dual-enable structure allows independent control of two 3-channel groups on one IC.

Can SN74HC365NG4 drive a 50 Ω transmission line?

No - SN74HC365NG4 is not designed for 50 Ω line driving. Its ±6 mA output drive at 5 V yields ~833 Ω effective source impedance, suited for unterminated bus loads (e.g., 15 LSTTL inputs) or short PCB traces (<10 cm). For 50 Ω lines, use dedicated line drivers like SN65LVDS1 or SN75ALS197.

Is SN74HC365NG4 pin-compatible with SN74LS365?

No - SN74HC365NG4 and SN74LS365 share functional equivalence but differ electrically and physically. SN74LS365 uses bipolar TTL technology (higher ICC, narrower VCC range), has different DC specs (e.g., VIH = 2 V min), and though both are 16-pin PDIP, their internal logic thresholds and timing are not interchangeable without circuit validation.