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MM74HC4050MX Equivalent & Substitute Parts
Part Overview
The MM74HC4050MX is a non-inverting buffer IC manufactured by onsemi, featuring 6 elements with 1 bit per element and push-pull output configuration. This device operates across a 2V to 6V supply voltage range and is housed in a 16-SOIC package. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MM74HC4050MX |
| Manufacturer | onsemi |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 6 |
| Number of Bits per Element | 1 |
| Output Type | Push-Pull |
| Current - Output High, Low | 5.2mA, 5.2mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MM74HC4050MX is determined by the following critical parameters:
Functional Equivalence: Logic type (Buffer, Non-Inverting), number of elements (6), bits per element (1), and output type (Push-Pull) must remain identical.
Electrical Compatibility: Output current specifications (5.2mA high and low) and supply voltage range (2V ~ 6V) must be maintained or exceeded.
Package Compatibility: The 16-SOIC package with 0.154" (3.90mm) width is the primary mechanical requirement. Variants using 16-SO packaging with different physical dimensions (0.209", 5.30mm width) are classified as similar rather than direct substitutes due to PCB layout implications.
Thermal Performance: Operating temperature range must support the application requirements. The original part specifies -40°C to 85°C; substitutes with extended ranges (-55°C to 125°C) provide enhanced capability.
Product Status and Compliance: Active or Last Time Buy status indicates availability. RoHS3 compliance and REACH unaffected status are standard for modern equivalents.
Parameter Comparison
| Parameter | MM74HC4050MX (onsemi) | 74HC4050D,653 (Nexperia) | CD74HC4050M (TI) | CD74HC4050M96 (TI) | CD74HC4050MT (TI) | CD74HC4050NSR (TI) |
|---|---|---|---|---|---|---|
| Logic Type | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting |
| Number of Elements | 6 | 6 | 6 | 6 | 6 | 6 |
| Bits per Element | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Type | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull |
| Current - Output High, Low | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Package / Case | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.209", 5.30mm) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Last Time Buy | Active | Last Time Buy | Active |
| RoHS Status | Not specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Direct Substitutes (Identical Package Geometry):
The 74HC4050D,653 from Nexperia USA Inc. is an active product offering direct pin-for-pin and footprint compatibility. This part extends the operating temperature range to -40°C to 125°C and carries ROHS3 compliance certification, making it suitable for applications requiring modern regulatory adherence.
The CD74HC4050M96 from Texas Instruments is an active product in Cut Tape and Digi-Reel packaging. It provides the widest operating temperature range (-55°C to 125°C) and maintains full electrical and mechanical compatibility with the original MM74HC4050MX. This part is recommended for applications requiring extended temperature performance.
The CD74HC4050M from Texas Instruments carries Last Time Buy status, indicating limited future availability. While functionally equivalent with extended temperature range (-55°C to 125°C), this part should be considered only when CD74HC4050M96 is unavailable.
The CD74HC4050MT from Texas Instruments also carries Last Time Buy status and is available in Tape & Reel packaging. It provides identical electrical specifications and extended temperature range but faces availability constraints.
Similar Part (Different Package Geometry):
The CD74HC4050NSR from Texas Instruments is an active product with identical electrical specifications but uses a 16-SO package with 0.209" (5.30mm) width, differing from the original 0.154" (3.90mm) width. This part requires PCB layout modification and is suitable only when footprint redesign is feasible.
Frequently Asked Questions (FAQ)
Q: Can I use CD74HC4050NSR as a direct replacement for MM74HC4050MX?
A: No. While CD74HC4050NSR is electrically equivalent, its 16-SO package has a different physical width (0.209" versus 0.154"), requiring PCB layout changes. Use only if footprint redesign is acceptable.
Q: Which substitute offers the best long-term availability?
A: CD74HC4050M96 from Texas Instruments is the recommended choice, as it maintains Active product status, ensuring continued availability and supply chain stability.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All substitute parts listed carry ROHS3 Compliant certification, meeting current environmental and regulatory requirements.
Q: What is the temperature performance difference between the original and substitutes?
A: The MM74HC4050MX operates from -40°C to 85°C. All substitute parts extend the upper limit to 125°C. Texas Instruments parts (CD74HC4050M, CD74HC4050M96, CD74HC4050MT, CD74HC4050NSR) additionally extend the lower limit to -55°C, providing enhanced cold-temperature performance.
Q: Can I interchange packaging formats (Tube, Tape & Reel, Cut Tape)?
A: Packaging format affects handling and storage but does not impact electrical or mechanical compatibility. Selection depends on assembly process requirements and inventory management practices.
Q: Are the electrical output characteristics identical across all substitutes?
A: Yes. All parts maintain 5.2mA output current (high and low) and 2V to 6V supply voltage specifications, ensuring functional equivalence in circuit applications.
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