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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

onsemi MC74HC368ADR2G

Name: MC74HC368ADR2G
Brand: onsemi
SKU: MC74HC368ADR2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74HC368ADR2G

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: MC74HC368ADR2G.pdf

Description:: IC BUFFER INVERT 6V 16SOIC

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Product details

Overview

MC74HC368ADR2G from onsemi is a hex 3-state inverting buffer IC with split 2-bit and 4-bit sections, each controlled by independent active-low output enables. It operates from 2.0 V to 6.0 V, delivers ±25 mA output drive per pin, exhibits 16 ns propagation delay at 6.0 V, and supports high-noise-immunity CMOS logic interfacing in industrial control backplanes.

For engineers reviewing the MC74HC368ADR2G datasheet, pinout, applications, or equivalent options, this device is selected for level-shifting, bus isolation, and tri-state data routing where dual-section enable control and LSTTL-compatible drive are required.

Technical Context

The MC74HC368ADR2G implements six independent inverting buffers partitioned into two logically isolated groups: A0–A1/Y0–Y1 (2-bit section) and A2–A5/Y2–Y5 (4-bit section), each with dedicated OE̅ pins. Its high-impedance outputs are asserted when either OE̅ is high, enabling selective bus gating without contention.

Designed using high-performance silicon-gate CMOS, it achieves 15 LSTTL load drive capability while maintaining low input current (±0.1 µA max) and high noise immunity. Input thresholds scale with V_CC, supporting robust operation across the full 2–6 V supply range and −55°C to +125°C temperature envelope.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic systems without level shifters.
Output Drive Capability	±25 mA per pin - Sufficient to drive 15 LSTTL loads, supporting legacy TTL bus loading requirements.
Propagation Delay (A→Y)	16 ns max at V_CC = 6.0 V - Ensures timing predictability in synchronous data paths up to ~30 MHz.
Input Leakage Current	±0.1 µA max at 6.0 V - Minimizes static power and prevents unintended logic state drift on unterminated inputs.
Three-State Leakage	±0.5 µA max at 6.0 V - Guarantees clean high-impedance isolation during bus arbitration or power-down modes.
Operating Temperature	−55°C to +125°C - Qualified for under-hood automotive, industrial PLC, and aerospace avionics environments.
ESD Protection	HBM ≥2 kV - Integrated protection circuitry guards against handling damage without external components.

Pinout & Package

MC74HC368ADR2G is packaged in Pb-free SOIC-16 (Case 751B), measuring 9.90 mm × 3.90 mm × 1.37 mm with 1.27 mm pitch. The package supports standard reflow profiles and provides mechanical stability for automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
1, 13	OE̅1, OE̅2 (Active-Low Output Enables)	Independent controls for 2-bit (Y0–Y1) and 4-bit (Y2–Y5) sections; high = high-Z output.
2, 4, 5, 6, 7, 9	A0–A5 (Inputs)	Inverting logic inputs; compatible with CMOS, NMOS, and LSTTL (with pullups).
3, 8, 10, 11, 12, 15	Y0–Y5 (Outputs)	Inverting buffered outputs; three-state capable; drive ±25 mA per pin.
16	V_CC	Positive supply rail; must be decoupled locally to suppress switching noise.
8	GND	Ground reference for all I/O and internal logic; requires low-impedance connection.

Key Features

Feature	Design Value
Dual-section 3-state control	Separate OE̅1 and OE̅2 allow independent gating of 2-bit and 4-bit data lanes-critical for multiplexed address/data buses.
LSTTL-compatible input thresholds	VIH = 1.5 V min / VIL = 0.3 V max at 2.0 V V_CC ensures reliable interfacing with legacy TTL without external biasing.
Low quiescent supply current	ICC ≤ 8 µA at 6.0 V and 25°C - reduces system standby power in battery-backed or energy-sensitive applications.
High noise immunity	CMOS input structure with hysteresis-like noise rejection (>40% V_CC noise margin) prevents false triggering in electrically noisy industrial settings.
Pb-free SOIC-16 packaging	RoHS-compliant, JEDEC-standard footprint enables drop-in replacement in existing PCB layouts without redesign.

Applications

Industrial PLC Backplane	Automotive Body Control Module
Use Scenario: Isolating sensor input lines and actuator command buses within a modular rack-mounted controller. IC Role / Device Role / Timing Role: Inverting tri-state buffer providing direction-controlled signal routing between microcontroller peripherals and field I/O cards. Use Value: Dual OE̅ pins enable synchronized release of 2-bit status signals and 4-bit command words without bus contention or timing skew.	Use Scenario: Level-shifting and buffering LIN bus diagnostic signals between 5 V MCU GPIO and 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Voltage-tolerant inverting buffer translating logic levels while maintaining precise edge timing for UART-based diagnostics. Use Value: 2–6 V operating range and ±25 mA drive support direct 5 V MCU interfacing without external level translators or drivers.
Test Equipment Signal Switching	Medical Instrument Data Acquisition
Use Scenario: Multiplexing analog-to-digital converter (ADC) channel select lines in automated test fixtures. IC Role / Device Role / Timing Role: Low-propagation-delay inverter enabling precise timing alignment of channel-enable pulses across multiple ADCs. Use Value: 16 ns max t_PLH/t_PHL at 6 V ensures sub-62.5 ns resolution for 16 MHz sampling clock synchronization.	Use Scenario: Isolating patient-connected sensor front-end signals from digital processing stages in ECG/EEG monitors. IC Role / Device Role / Timing Role: High-impedance tri-state gate preventing leakage currents from compromising patient safety isolation barriers. Use Value: ±0.5 µA max IOZ at 6 V minimizes leakage-induced offset errors in precision biopotential amplifiers.

Industrial PLC Backplane

Automotive Body Control Module

Use Scenario: Isolating sensor input lines and actuator command buses within a modular rack-mounted controller.

IC Role / Device Role / Timing Role: Inverting tri-state buffer providing direction-controlled signal routing between microcontroller peripherals and field I/O cards.

Use Value: Dual OE̅ pins enable synchronized release of 2-bit status signals and 4-bit command words without bus contention or timing skew.

Use Scenario: Level-shifting and buffering LIN bus diagnostic signals between 5 V MCU GPIO and 12 V vehicle subsystems.

IC Role / Device Role / Timing Role: Voltage-tolerant inverting buffer translating logic levels while maintaining precise edge timing for UART-based diagnostics.

Use Value: 2–6 V operating range and ±25 mA drive support direct 5 V MCU interfacing without external level translators or drivers.

Test Equipment Signal Switching

Medical Instrument Data Acquisition

Use Scenario: Multiplexing analog-to-digital converter (ADC) channel select lines in automated test fixtures.

IC Role / Device Role / Timing Role: Low-propagation-delay inverter enabling precise timing alignment of channel-enable pulses across multiple ADCs.

Use Value: 16 ns max t_PLH/t_PHL at 6 V ensures sub-62.5 ns resolution for 16 MHz sampling clock synchronization.

Use Scenario: Isolating patient-connected sensor front-end signals from digital processing stages in ECG/EEG monitors.

IC Role / Device Role / Timing Role: High-impedance tri-state gate preventing leakage currents from compromising patient safety isolation barriers.

Use Value: ±0.5 µA max IOZ at 6 V minimizes leakage-induced offset errors in precision biopotential amplifiers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74HC368N	Same logic function and pinout; rated only to +70°C ambient; no guaranteed 125°C operation.	Suitable for commercial-grade instrumentation but not under-hood automotive or industrial enclosures.	Select SN74HC368N only if ambient temperature remains below 70°C and extended temperature qualification is unnecessary.
74LVC368APW	3.3 V only (1.65–3.6 V); lower propagation delay (1.7 ns typ); higher speed but narrower voltage range.	Optimized for modern low-voltage FPGA/CPU I/O interfaces-not interoperable with 5 V or mixed-voltage systems.	Choose 74LVC368APW when designing new 3.3 V-only systems requiring faster switching and lower dynamic power.

Compared with SN74HC368N and 74LVC368APW, the MC74HC368ADR2G uniquely balances wide supply range (2–6 V), extended temperature support (−55°C to +125°C), and proven industrial reliability-making it the preferred choice for legacy-compatible, thermally demanding, or mixed-voltage designs.

Availability

MC74HC368ADR2G is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, and medical data acquisition systems requiring stable component supply across long production lifecycles.

Supply support for MC74HC368ADR2G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and logic solutions for automotive, industrial, and cloud infrastructure markets.

The MC74HC368ADR2G belongs to onsemi's HC-series high-speed CMOS logic family, engineered for robust interoperability between TTL and CMOS systems in harsh-environment applications.

FAQ

What is the maximum supply voltage rating for MC74HC368ADR2G?

The MC74HC368ADR2G has an absolute maximum DC supply voltage (V_CC) of +7.0 V referenced to GND. However, its recommended operating range is 2.0 V to 6.0 V. Operating continuously above 6.0 V risks parametric degradation and reduced reliability, even if within absolute maximum limits. Always refer to the Recommended Operating Conditions table in the official datasheet for sustained use cases involving MC74HC368ADR2G.

Does MC74HC368ADR2G support true 5 V TTL compatibility without external pull-up resistors?

No-MC74HC368ADR2G inputs are CMOS-compatible and require pull-up resistors to achieve reliable interfacing with standard LSTTL outputs. Its VIH minimum is 1.5 V at 2.0 V V_CC, which falls below the 2.0 V typical LSTTL VOH. With appropriate pull-ups (e.g., 10 kΩ to V_CC), MC74HC368ADR2G reliably accepts LSTTL logic levels while retaining full CMOS noise immunity and low input current characteristics.

Can both output enable pins (OE̅1 and OE̅2) be tied together for unified control of all six buffers?

Yes-OE̅1 (pin 1) and OE̅2 (pin 13) can be externally connected to a single control signal, allowing simultaneous 3-state control of all Y0–Y5 outputs. This configuration preserves full inverting functionality and timing behavior. When doing so, ensure the driving source meets fan-out requirements and maintains valid logic thresholds across temperature and voltage extremes for MC74HC368ADR2G.

What is the typical power dissipation of MC74HC368ADR2G at 5 V and 1 MHz toggle frequency?

At V_CC = 5.0 V and 1 MHz input toggle rate with CL = 50 pF, the MC74HC368ADR2G exhibits typical power dissipation of approximately 1.2 mW per buffer (7.2 mW total). This value derives from CPD = 40 pF per buffer and the formula P_DD = CPD × V_CC² × f_IN. Quiescent ICC remains below 8 µA, making dynamic switching the dominant power contributor in active operation of MC74HC368ADR2G.

Is MC74HC368ADR2G pin-compatible with the obsolete 74LS368?

Yes-the MC74HC368ADR2G is explicitly designed as a pinout-identical replacement for the 74LS368, sharing identical SOIC-16 pin assignments, logic function, and dual-section enable architecture. It retains the same A0–A5 inputs, Y0–Y5 outputs, OE̅1/OE̅2 enables, V_CC, and GND locations. No PCB layout changes are required when upgrading from 74LS368 to MC74HC368ADR2G, though supply voltage and decoupling should be reviewed per CMOS requirements.

MC74HC368ADR2G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74HC

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Inverting

Number of Elements:: 2

Number of Bits per Element:: 2, 4 (Hex)

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 7.8mA, 7.8mA

Voltage - Supply:: 2V ~ 6V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

MC74HC368ADR2G FAQ

1.How can I place an order for MC74HC368ADR2G through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74HC368ADR2G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MC74HC368ADR2G reliable?

The price and inventory of MC74HC368ADR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC368ADR2G is usually 5 days.

3.What payment methods are accepted for MC74HC368ADR2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC368ADR2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74HC368ADR2G?

MC74HC368ADR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74HC368ADR2G order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MC74HC368ADR2G?

For technical support, including MC74HC368ADR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC368ADR2G requirements.

6.How does Aetrix verify that MC74HC368ADR2G is sourced from the original manufacturer or authorized distributors?

All MC74HC368ADR2G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC74HC368ADR2G meets industry standards.

7.What is the process for return or replacement of MC74HC368ADR2G?

All MC74HC368ADR2G units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC368ADR2G, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MC74HC368ADR2G part is unused and in its original packaging.

Return procedure for MC74HC368ADR2G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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