Texas Instruments CD74HCT365M96

Overview

CD74HCT365M96 from Texas Instruments is a high-speed CMOS hex non-inverting three-state buffer/line driver with dual active-low output enables (OE1, OE2), 6-channel bus interface capability, ±25 mA output drive per pin, and operation across -55°C to +125°C. It serves as a logic-level compatible bus driver in industrial control backplanes requiring LSTTL input compatibility and low-power CMOS efficiency.

For engineers reviewing the CD74HCT365M96 datasheet, CD74HCT365M96 pinout, CD74HCT365M96 application, or CD74HCT365M96 equivalent, key selection criteria include its 4.5 V–5.5 V supply range, 9 ns typical propagation delay at 5 V/15 pF, three-state bus contention management, and SOIC-16 package suitability for high-density PCB layouts.

Technical Context

The CD74HCT365M96 implements six independent non-inverting buffers, each controlled by the NOR-combined OE1 and OE2 inputs to place all outputs simultaneously into high-impedance state. Its HCT logic family ensures direct LSTTL input voltage compatibility (VIL ≤ 0.8 V, VIH ≥ 2.0 V) while delivering CMOS-level output swing and noise immunity (NIL/NIH = 30% of VCC).

It operates strictly within 4.5 V–5.5 V, draws ≤160 µA quiescent current over full temperature range, and supports 15 LSTTL loads per output-enabling robust driving of legacy TTL buses without level-shifting circuitry. Propagation delays are characterized at 15 pF and 50 pF loads, with transition times under 18 ns.

Key Specifications

Pinout & Package

CD74HCT365M96 is packaged in a 16-pin SOIC (D) body measuring 9.90 mm × 3.90 mm, with 1.27 mm pitch, RoHS-compliant NiPdAu lead finish, and JEDEC Level-1 moisture sensitivity rating (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT244N and 74ACT365SCX, CD74HCT365M96 offers optimal balance of channel count, LSTTL compatibility, and industrial temperature support in a compact SOIC-16 package-making it preferred for space-constrained 6-bit bus isolation where single-OE simplicity matters.

Availability

CD74HCT365M96 is available at Aetrix Electronics and suitable for industrial automation backplanes, automotive body control modules, test equipment pattern generation, and avionics data acquisition front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74HCT365M96 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 heritage in high-reliability logic families including the 74HCT series.

The CD74HCT365M96 belongs to TI's industry-standard 74HCT logic portfolio, designed specifically for robust 5 V bus interfacing in harsh-environment applications where LSTTL compatibility, wide temperature operation, and three-state controllability are essential.

FAQ

What is the maximum operating frequency supported by CD74HCT365M96 in a 50 pF load configuration?

The CD74HCT365M96 exhibits a maximum propagation delay of 38 ns (tPLH/tPHL) at VCC = 4.5 V and CL = 50 pF over the full -55°C to +125°C range. This corresponds to a practical maximum toggle frequency of approximately 13 MHz for reliable data transmission, assuming setup/hold margins and board-level signal integrity constraints are met. The device is not specified for clock distribution but functions effectively as a data path buffer in synchronous bus systems up to this rate.

Does CD74HCT365M96 support mixed-voltage operation, such as interfacing 3.3 V logic inputs?

No, CD74HCT365M96 does not support 3.3 V logic inputs. Its HCT input thresholds are fixed for 5 V LSTTL compatibility: VIH ≥ 2.0 V (min) and VIL ≤ 0.8 V (max) at VCC = 4.5–5.5 V. Applying 3.3 V logic levels may result in indeterminate switching or increased static current. For 3.3 V–5 V translation, use dedicated level-shifters or TI's 74LVC series devices instead of CD74HCT365M96.

How is the dual output enable (OE1/OE2) logic implemented in CD74HCT365M96?

In CD74HCT365M96, OE1 and OE2 are internally NORed: all six outputs enter high-impedance state only when at least one of OE1 or OE2 is high. Both enables must be low for normal buffered operation. This architecture allows flexible bus arbitration-for example, OE1 can serve as a global enable while OE2 acts as a local subsystem disable-without requiring external logic gates.

Can CD74HCT365M96 drive a 50 Ω transmission line directly?

No, CD74HCT365M96 is not designed for direct 50 Ω transmission line driving. Its output structure targets LSTTL loads (≈1 kΩ pull-up) and bus capacitance (≤50 pF), not RF impedance matching. Attempting to drive 50 Ω loads causes excessive current draw (>100 mA), violating the ±25 mA absolute maximum rating and risking latch-up or thermal failure. Use dedicated line drivers (e.g., SN65LVDSx) for controlled-impedance signaling.

Is CD74HCT365M96 pin-compatible with CD74HC365M96?

Yes, CD74HCT365M96 is pin-compatible with CD74HC365M96, sharing identical SOIC-16 pinout, function table, and package dimensions. However, they differ electrically: CD74HC365M96 operates from 2–6 V and has CMOS-input thresholds, while CD74HCT365M96 requires 4.5–5.5 V and accepts LSTTL input levels. Swapping them requires verifying supply voltage and source logic family compatibility-not just pin alignment.