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

onsemi MC74VHCT50ADR2

Name: MC74VHCT50ADR2
Brand: onsemi
SKU: MC74VHCT50ADR2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74VHCT50ADR2

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: MC74VHCT50ADR2.pdf

Description:: IC BUF NON-INVERT 5.5V 14SOIC

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Product details

Overview

MC74VHCT50ADR2 from onsemi is a high-speed CMOS hex buffer with 3-state outputs, designed for bus interface and signal routing applications. It operates at 4.5–5.5 V supply, features 8 ns typical propagation delay at 5 V, ±8 mA output drive, and TTL-compatible inputs. It is commonly used in memory address drivers and data bus isolation circuits.

For engineers reviewing the MC74VHCT50ADR2 datasheet, pinout, applications, or equivalent options, key selection considerations include its 3-state control timing, rail-to-rail output swing under 5 V, input hysteresis for noise immunity, and compatibility with legacy TTL logic families in mixed-voltage systems.

Technical Context

This device implements six independent non-inverting buffers, each with an active-low 3-state output enable (OE) input. All outputs enter high-impedance state when OE is high, enabling bidirectional bus sharing without external direction control logic.

The VHCT logic family ensures TTL-input compatibility while maintaining CMOS power efficiency. Input thresholds are fixed at 0.8 V (V_IL) and 2.0 V (V_IH), and output levels meet VOH ≥ 4.4 V and VOL ≤ 0.1 V at I_OH/I_OL = ±8 mA under V_CC = 5.0 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - Ensures stable operation across industrial-grade 5 V rails with ±10% tolerance.
Propagation Delay	8 ns typical at V_CC = 5 V - Enables reliable timing in 125 MHz bus cycles with margin.
Output Drive	±8 mA - Sufficient to drive 50 Ω transmission lines or 10 LSTTL loads without fanout limitation.
Input Compatibility	TTL-level - Accepts standard 0.8 V/2.0 V thresholds, eliminating level-shifter requirements in legacy designs.
3-State Enable Polarity	Active-low OE - Simplifies bus arbitration logic by allowing common OE tie to microcontroller GPIO or system controller.
Quiescent Current	4 µA max at 25°C - Supports low-static-power system states without disabling the device.

Pinout & Package

MC74VHCT50ADR2 is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package with 1.27 mm pitch, JEDEC MS-012AC compliant, and rated for −55°C to +125°C operating temperature.

Pin/Terminal	Circuit Role	Design Meaning
1 (1A)	Input of Buffer 1	Non-inverting data input; accepts TTL-compatible logic levels.
2 (1Y)	Output of Buffer 1	3-state non-inverting output; high-Z when OE is asserted.
3 (2A)	Input of Buffer 2	Independent input channel; electrically isolated from other buffers.
4 (2Y)	Output of Buffer 2	Output enabled only when OE = low; no internal pull-up/down.
5 (3A)	Input of Buffer 3	Third input stage; identical electrical characteristics to Pins 1 and 3.
6 (3Y)	Output of Buffer 3	Matched propagation delay and drive strength across all six channels.
7 (GND)	Ground Reference	Primary return path for all I/O and internal logic; must be low-impedance.
8 (4Y)	Output of Buffer 4	Output shares same OE control as all other Y pins; no per-channel enable.
9 (4A)	Input of Buffer 4	Fourth independent input; supports asynchronous signal routing.
10 (5Y)	Output of Buffer 5	One of six identical outputs; timing-critical paths require matched trace lengths.
11 (5A)	Input of Buffer 5	Input hysteresis prevents chatter on slow-rising signals near threshold.
12 (6Y)	Output of Buffer 6	Final output; layout should minimize capacitive loading to preserve 8 ns delay.
13 (6A)	Input of Buffer 6	Supports hot-swap initialization when OE is held high during power-up.
14 (OE)	Output Enable (Active-Low)	Global 3-state control; must be driven actively-no internal pull-up.

Key Features

Feature	Design Value
TTL-Compatible Inputs	Enables direct interfacing with legacy 74LS/74ALS devices without level translation circuitry.
High-Speed Performance	8 ns propagation delay allows use in 125 MHz clock domains with setup/hold margin.
Low Power Consumption	4 µA max ICC enables integration into always-on subsystems without thermal penalty.
Bus-Friendly 3-State Outputs	Simultaneous high-impedance control across all six outputs simplifies shared-bus arbitration logic.
Industrial Temperature Range	−55°C to +125°C rating supports deployment in automotive engine control and industrial PLC modules.

Applications

Memory Address Buffering	Data Bus Isolation
Use Scenario: Driving address lines from a microcontroller to multiple SRAM or EPROM chips in a shared-memory architecture. IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state control synchronizes address latching and prevents bus contention during memory access transitions. Use Value: Eliminates need for discrete transistors or additional logic gates while maintaining 8 ns timing integrity across all six address bits.	Use Scenario: Isolating a microprocessor data bus from peripheral ICs during DMA transfers or debug probe attachment. IC Role / Device Role / Timing Role: Bidirectional bus driver with global OE control enables clean bus release before peripheral reconfiguration. Use Value: Prevents data corruption during bus handoff by ensuring simultaneous high-Z transition across all six data lines.
Legacy System Interface	Industrial I/O Expansion
Use Scenario: Interfacing modern 5 V CMOS microcontrollers with older TTL-based instrumentation or test equipment. IC Role / Device Role / Timing Role: Level translator and fanout amplifier that preserves TTL voltage thresholds while delivering CMOS drive strength. Use Value: Removes requirement for discrete resistor networks or dual-supply translators, reducing BOM count and PCB area.	Use Scenario: Expanding digital I/O capability in programmable logic controllers where field I/O modules share a backplane bus. IC Role / Device Role / Timing Role: Signal repeater and bus driver that maintains signal integrity over 15 cm backplane traces at 20 MHz. Use Value: Provides consistent ±8 mA drive across all six channels, preventing skew-induced timing violations in deterministic real-time control loops.

Memory Address Buffering

Data Bus Isolation

Use Scenario: Driving address lines from a microcontroller to multiple SRAM or EPROM chips in a shared-memory architecture.

IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state control synchronizes address latching and prevents bus contention during memory access transitions.

Use Value: Eliminates need for discrete transistors or additional logic gates while maintaining 8 ns timing integrity across all six address bits.

Use Scenario: Isolating a microprocessor data bus from peripheral ICs during DMA transfers or debug probe attachment.

IC Role / Device Role / Timing Role: Bidirectional bus driver with global OE control enables clean bus release before peripheral reconfiguration.

Use Value: Prevents data corruption during bus handoff by ensuring simultaneous high-Z transition across all six data lines.

Legacy System Interface

Industrial I/O Expansion

Use Scenario: Interfacing modern 5 V CMOS microcontrollers with older TTL-based instrumentation or test equipment.

IC Role / Device Role / Timing Role: Level translator and fanout amplifier that preserves TTL voltage thresholds while delivering CMOS drive strength.

Use Value: Removes requirement for discrete resistor networks or dual-supply translators, reducing BOM count and PCB area.

Use Scenario: Expanding digital I/O capability in programmable logic controllers where field I/O modules share a backplane bus.

IC Role / Device Role / Timing Role: Signal repeater and bus driver that maintains signal integrity over 15 cm backplane traces at 20 MHz.

Use Value: Provides consistent ±8 mA drive across all six channels, preventing skew-induced timing violations in deterministic real-time control loops.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74HCT50D	Same pinout and function but TI-specified V_IH = 2.0 V min (vs. onsemi's 2.0 V typ); slightly higher I_CC (8 µA max).	Valid for drop-in replacement in existing HCT-based designs; not qualified for extended temperature range beyond −40°C to +85°C.	Select when sourcing from TI-authorized channels or when requiring TI-specific qualification documentation.
74VHC50M	Lower supply range (2.0–5.5 V); no TTL input compatibility-requires CMOS-level inputs (V_IH = 70% V_CC).	Suitable for mixed-supply systems (e.g., 3.3 V logic with 5 V peripherals) but incompatible with true TTL sources without external biasing.	Choose only if system uses pure CMOS signaling and requires wider V_CC flexibility; verify input thresholds match source drivers.

Compared with SN74HCT50D and 74VHC50M, the MC74VHCT50ADR2 uniquely combines guaranteed TTL input compatibility, industrial temperature support, and sub-5 µA quiescent current-making it optimal for ruggedized embedded control and legacy interface consolidation where reliability and noise immunity are critical.

Availability

MC74VHCT50ADR2 is available at Aetrix Electronics and suitable for memory buffering, data bus isolation, and legacy TTL-CMOS interface applications requiring stable component supply and long-term industrial availability.

Supply support for MC74VHCT50ADR2 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 is a global semiconductor leader focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.

The MC74VHCT50ADR2 belongs to the VHCT logic family, engineered specifically for seamless interoperability between TTL and CMOS systems while delivering low-power, high-speed performance in harsh environments.

FAQ

What is the maximum operating frequency supported by the MC74VHCT50ADR2?

The MC74VHCT50ADR2 does not specify a maximum clock frequency in its datasheet because it is a combinational buffer-not a clocked device. However, with an 8 ns typical propagation delay at 5 V, it supports reliable operation in signal paths up to approximately 125 MHz assuming adequate setup/hold margins and controlled trace impedance. Actual usable frequency depends on system-level timing constraints, not the MC74VHCT50ADR2 alone.

Does the MC74VHCT50ADR2 require external pull-up resistors on its 3-state outputs?

No, the MC74VHCT50ADR2 does not require external pull-up resistors on its outputs. Its 3-state outputs are truly high-impedance when OE is high, with leakage current limited to ±10 µA. Pull-ups are only needed if a defined logic state is required during high-Z periods-this is a system-level design choice, not a requirement of the MC74VHCT50ADR2 itself.

Can the MC74VHCT50ADR2 operate at 3.3 V supply voltage?

No, the MC74VHCT50ADR2 is not specified for 3.3 V operation. Its absolute maximum supply rating is 5.5 V, and its minimum functional supply is 4.5 V. At 3.3 V, input thresholds would not be met, output drive would collapse, and timing parameters become invalid. For 3.3 V systems, consider the 74VHC50 or SN74LVC50A instead of the MC74VHCT50ADR2.

What is the purpose of the active-low OE pin on the MC74VHCT50ADR2?

The active-low OE (Output Enable) pin on the MC74VHCT50ADR2 provides global 3-state control for all six outputs. When OE is low, outputs follow their respective inputs; when OE is high, all outputs enter high-impedance state. This enables safe bus sharing, prevents contention during reset or configuration, and eliminates need for per-channel enable logic-key for efficient MC74VHCT50ADR2 integration in multiplexed architectures.

Is the MC74VHCT50ADR2 RoHS compliant and lead-free?

Yes, the MC74VHCT50ADR2 is RoHS compliant and lead-free. It meets EU Directive 2011/65/EU and is manufactured using MSL1 moisture sensitivity packaging. The device carries the "Pb-Free" marking on its top-side laser etch and is listed in onsemi's official RoHS compliance database with exemption 7a (lead in high-melting-temperature type solder alloys).

MC74VHCT50ADR2 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VHCT

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 6

Number of Bits per Element:: 1

Input Type:: -

Output Type:: Push-Pull

Current - Output High, Low:: 8mA, 8mA

Voltage - Supply:: 2V ~ 5.5V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

MC74VHCT50ADR2 FAQ

1.How can I place an order for MC74VHCT50ADR2 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74VHCT50ADR2 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 MC74VHCT50ADR2 reliable?

The price and inventory of MC74VHCT50ADR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHCT50ADR2 is usually 5 days.

3.What payment methods are accepted for MC74VHCT50ADR2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHCT50ADR2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74VHCT50ADR2?

MC74VHCT50ADR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74VHCT50ADR2 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 MC74VHCT50ADR2?

For technical support, including MC74VHCT50ADR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHCT50ADR2 requirements.

6.How does Aetrix verify that MC74VHCT50ADR2 is sourced from the original manufacturer or authorized distributors?

All MC74VHCT50ADR2 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 MC74VHCT50ADR2 meets industry standards.

7.What is the process for return or replacement of MC74VHCT50ADR2?

All MC74VHCT50ADR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHCT50ADR2, 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 MC74VHCT50ADR2 part is unused and in its original packaging.

Return procedure for MC74VHCT50ADR2:

1.Submit a request within 90 days.

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

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