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

STMicroelectronics M74HC4050B1R

Name: M74HC4050B1R
Brand: STMicroelectronics
SKU: M74HC4050B1R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M74HC4050B1R

Manufacturer:: STMicroelectronics

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 16-DIP (0.300", 7.62mm)

Datasheet:: M74HC4050B1R.pdf

Description:: IC BUFFER NON-INVERT 6V 16DIP

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Product details

Overview

M74HC4050B1R from STMicroelectronics is a high-speed CMOS hex non-inverting buffer/level shifter in 16-pin DIP package, operating from 2V to 6V supply, with 8ns typical propagation delay, ±6mA output drive, and input tolerance up to 13V - enabling logic-level translation between 3.3V/5V systems and higher-voltage interfaces in industrial control I/O modules.

For engineers reviewing the M74HC4050B1R datasheet, M74HC4050B1R pinout, M74HC4050B1R application, or M74HC4050B1R equivalent, key selection criteria include its 13V-tolerant inputs, symmetrical 6mA drive capability, wide 2–6V VCC range, noise immunity (28% VCC), and DIP-16 through-hole compatibility for legacy board upgrades and test fixtures.

Technical Context

This device implements six independent non-inverting buffer stages using silicon gate C2MOS technology, each with three-stage internal circuitry to enhance noise immunity and output stability. Input protection includes dedicated V_CC-side diodes rated for 13V DC, enabling safe interfacing with voltages exceeding V_CC.

It delivers balanced propagation delays (t_PLH ≅ t_PHL) and symmetrical output impedance (|I_OH| = I_OL ≥ 6mA), supporting clean signal integrity in bidirectional timing-critical paths. The device is specified across –55°C to +125°C and supports CL = 50pF loads per AC characterization.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	2V to 6V - supports mixed-supply systems including 3.3V and 5V logic domains
tPD (Typ.)	8ns at VCC = 6V - enables use in sub-100MHz digital control and sampling clock distribution
I_OH/I_OL	≥6mA - drives standard TTL loads and short PCB traces without external buffering
V_I(max)	13V - allows direct connection to 12V sensor outputs or industrial fieldbus signals
V_NIL/V_NIH	28% VCC (min) - rejects >280mV of coupled noise on 5V lines, critical for factory-floor reliability
I_CC(max)	1µA at TA = 25°C - enables ultra-low-quiescent operation in battery-backed monitoring circuits
Operating Temp	–55°C to +125°C - qualified for under-hood automotive and industrial motor-drive environments

Pinout & Package

Package: Plastic DIP-16 (0.300" width), through-hole mounting, JEDEC MS-001 compliant.

Pin/Terminal	Circuit Role	Design Meaning
1	V_CC	Positive supply input - must be decoupled locally; supports 2–6V operation
2,4,6,10,12,15	1Y–6Y	Non-inverting buffered outputs - each independently drives loads up to 6mA
3,5,7,9,11,14	1A–6A	13V-tolerant inputs - accept logic signals up to 13V regardless of V_CC level
8	GND	Ground reference - common return for all inputs, outputs, and supply current
13,16	NC	No connect - internally unconnected; must remain floating or grounded per layout best practice

Key Features

Feature	Design Value
13V-tolerant inputs	Enables direct interface to 12V sensors, PLC outputs, and relay drivers without external level-shifting resistors
Symmetrical 6mA drive	Supports fan-out of ≥10 LS-TTL loads or driving 50Ω transmission lines over short distances
8ns typical propagation delay	Meets setup/hold timing for 50MHz synchronous control buses in motion controllers
28% VCC noise margin	Ensures reliable operation in electrically noisy environments like motor drives and power supplies
–55°C to +125°C operation	Validated for deployment in engine control units, industrial inverters, and outdoor metering hardware

Applications

Industrial PLC I/O Expansion

Automotive Body Control Module

Use Scenario: Isolating and translating 12V sensor switch signals to 3.3V microcontroller GPIOs in modular I/O racks.

IC Role / Device Role / Timing Role: Non-inverting level-shifting buffer with 13V-tolerant inputs and 3.3V-compatible outputs.

Use Value: Eliminates need for discrete resistor dividers or dual-supply translators, reducing BOM count and board area.

Use Scenario: Driving LED status indicators and reading door-lock switch feedback in harsh under-dash environments.

IC Role / Device Role / Timing Role: Robust signal conditioning buffer with extended temperature and EMI resilience.

Use Value: Maintains logic integrity during load-dump transients and thermal cycling without latch-up or parameter drift.

Legacy Equipment Interface Adapter

Test Fixture Signal Conditioning

Use Scenario: Retrofitting modern 3.3V FPGA-based controllers into aging 5V/12V instrumentation chassis.

IC Role / Device Role / Timing Role: Pin-compatible 74-series buffer replacement with enhanced voltage tolerance and speed.

Use Value: Enables drop-in upgrade path without redesigning backplane wiring or firmware timing margins.

Use Scenario: Buffering and cleaning low-amplitude digital stimulus signals in automated functional test systems.

IC Role / Device Role / Timing Role: Low-skew, low-jitter signal repeater with matched t_PLH/t_PHL characteristics.

Use Value: Preserves edge fidelity and timing accuracy across multiple parallel test channels simultaneously.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74HC4050N	Same pinout and function; TI version rated only to +85°C (vs. +125°C), lower VI(max) = 7V	Limited to commercial/industrial ambient, not suitable for under-hood or high-temp enclosures	Select when cost sensitivity outweighs extended temperature or 13V input requirement
74VHC4050N	Higher speed (tPD = 5.5ns typ.), but VI(max) = 7V and no 13V-tolerant input protection	Better for high-frequency clock distribution, unsuitable for 12V field interface	Prefer for timing-critical digital interconnect where input voltage stays within VCC+0.5V

Compared with SN74HC4050N and 74VHC4050N, M74HC4050B1R uniquely combines 13V input tolerance, –55°C to +125°C operation, and DIP-16 packaging - making it the only choice for ruggedized legacy upgrades and industrial field I/O where voltage overrange and thermal stress are design constraints.

Availability

M74HC4050B1R is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and legacy equipment interface adapters requiring stable component supply and long-term obsolescence mitigation.

Supply support for M74HC4050B1R 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and automotive-grade ICs with vertical fabrication capacity.

M74HC4050B1R belongs to the M74HC high-speed CMOS logic family, engineered specifically for robust industrial interfacing - emphasizing voltage tolerance, noise immunity, and extended temperature reliability over raw speed.

FAQ

Can M74HC4050B1R safely interface a 12V sensor output to a 3.3V microcontroller?

Yes. Its inputs tolerate up to 13V DC regardless of V_CC level, and outputs swing rail-to-rail within the 3.3V supply range when V_CC = 3.3V. No external clamping or level-shifting components are required, provided GND is shared and input current remains within ±20mA limits.

Is M74HC4050B1R pin-compatible with standard 74HC4050 devices?

Yes. It follows the standard 16-pin DIP pinout defined for 74HC4050: pins 1 (V_CC), 2–15 (Y/A pairs), 8 (GND), and 13/16 (NC). Functionally identical to industry-standard 74HC4050, with enhanced specs including 13V input rating and full –55°C to +125°C qualification.

What is the maximum capacitive load this device can drive reliably?

Per AC characterization, it is tested and specified with C_L = 50pF. While it can drive heavier loads, propagation delay increases linearly with capacitance - e.g., t_PD rises to ~115ns at 150pF (V_CC = 2V). For loads >100pF, consider adding series termination or reducing trace length to maintain timing margins.

Does M74HC4050B1R require external pull-up or pull-down resistors on unused inputs?

No. Unused inputs may be left floating due to integrated input protection and high-impedance CMOS structure, but best practice is to tie them to V_CC or GND to prevent noise-induced switching and minimize ICC. NC pins (13,16) must remain unconnected - no routing or soldering.

M74HC4050B1R Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74HC

Package/Case:: 16-DIP (0.300", 7.62mm)

Packaging:: Tube

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:: 5.2mA, 5.2mA

Voltage - Supply:: 2V ~ 6V

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 16-DIP

M74HC4050B1R FAQ

1.How can I place an order for M74HC4050B1R through Aetrix?

Please submit a Request for Quotation (RFQ) for M74HC4050B1R 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 M74HC4050B1R reliable?

The price and inventory of M74HC4050B1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC4050B1R is usually 5 days.

3.What payment methods are accepted for M74HC4050B1R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HC4050B1R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M74HC4050B1R?

M74HC4050B1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M74HC4050B1R 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 M74HC4050B1R?

For technical support, including M74HC4050B1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC4050B1R requirements.

6.How does Aetrix verify that M74HC4050B1R is sourced from the original manufacturer or authorized distributors?

All M74HC4050B1R 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 M74HC4050B1R meets industry standards.

7.What is the process for return or replacement of M74HC4050B1R?

All M74HC4050B1R units undergo pre-shipment inspection (PSI). If there is an issue with M74HC4050B1R, 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 M74HC4050B1R part is unused and in its original packaging.

Return procedure for M74HC4050B1R:

1.Submit a request within 90 days.

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

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