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MM74HC151M Equivalent & Substitute Parts
Part Overview
The MM74HC151M is a 1 x 8:1 multiplexer logic IC manufactured by onsemi in 16-SOIC surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The MM74HC151M operates across a 2V to 6V supply range with single supply configuration, suitable for general-purpose digital logic applications requiring 8-to-1 data selection functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MM74HC151M |
| Manufacturer | onsemi |
| Type | Multiplexer 1 x 8:1 |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Voltage Supply Range | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C |
| Current Output High / Low | 5.2mA / 5.2mA |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the MM74HC151M is determined by the following critical parameters:
- Circuit configuration: 1 x 8:1 multiplexer topology
- Package type: 16-SOIC surface mount form factor
- Supply voltage range: 2V ~ 6V single supply
- Output current capability: Minimum 5.2mA per output
- Operating temperature range: Minimum -40°C ~ 85°C coverage
- Mounting compatibility: Surface mount only
Substitute parts are grouped into two categories:
Direct Substitutes maintain identical electrical specifications and package footprint, enabling pin-for-pin replacement without circuit modification.
Similar Substitutes share the same multiplexer function and 16-SOIC package but may have extended temperature ranges, different output current ratings, or enhanced compliance certifications. These require verification of application-specific requirements before selection.
Parameter Comparison
| Part Number | Manufacturer | Circuit | Package | Voltage Supply | Temp Range | Output Current (High/Low) | Product Status |
|---|---|---|---|---|---|---|---|
| MM74HC151M | onsemi | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -40°C ~ 85°C | 5.2mA / 5.2mA | Obsolete |
| SN74HC151D | Texas Instruments | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -40°C ~ 85°C | 7.8mA / 7.8mA | Discontinued at DiGi Electronics |
| SN74HC151DE4 | Texas Instruments | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -40°C ~ 85°C | 7.8mA / 7.8mA | Discontinued at DiGi Electronics |
| SN74HC151DR | Texas Instruments | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -40°C ~ 85°C | 7.8mA / 7.8mA | Active |
| SN74HC151DT | Texas Instruments | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -40°C ~ 85°C | 7.8mA / 7.8mA | Discontinued at DiGi Electronics |
| SN74HC151QDRQ1 | Texas Instruments | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -40°C ~ 125°C | 7.8mA / 7.8mA | Active |
| 74HC151D,653 | Nexperia USA Inc. | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -40°C ~ 125°C | 5.2mA / 5.2mA | Active |
| CD74HC151M | Harris Corporation | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -55°C ~ 125°C | 5.2mA / 5.2mA | Obsolete |
| CD74HC151M96 | Texas Instruments | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -55°C ~ 125°C | 5.2mA / 5.2mA | Active |
| CD74HC151MT | Texas Instruments | 1 x 8:1 | 16-SOIC | 2V ~ 6V | -55°C ~ 125°C | 5.2mA / 5.2mA | Discontinued at DiGi Electronics |
Engineering Selection Recommendations
Primary Recommendation: SN74HC151DR (Texas Instruments)
The SN74HC151DR is the preferred substitute for the MM74HC151M. This part maintains full electrical compatibility with identical supply voltage range and operating temperature coverage. The SN74HC151DR carries active product status with ROHS3 compliance and unlimited moisture sensitivity rating. Higher output current capability (7.8mA versus 5.2mA) provides design margin for driving additional logic loads. Cut Tape and Digi-Reel packaging supports both prototype and production procurement workflows.
Secondary Recommendation: 74HC151D,653 (Nexperia USA Inc.)
The 74HC151D,653 offers identical output current specifications to the MM74HC151M with extended operating temperature range (-40°C ~ 125°C). This part maintains active product status with ROHS3 compliance. The Nexperia variant provides high inventory availability and is suitable for applications requiring the original current rating with enhanced temperature performance.
Extended Temperature Alternative: CD74HC151M96 (Texas Instruments)
The CD74HC151M96 extends the operating temperature range to -55°C ~ 125°C while maintaining the original 5.2mA output current specification. This part is active and ROHS3 compliant, making it suitable for industrial and automotive temperature environments. The extended temperature capability comes without supply voltage or functional changes.
Automotive Grade Option: SN74HC151QDRQ1 (Texas Instruments)
The SN74HC151QDRQ1 is qualified to AEC-Q100 automotive standards with operating temperature range of -40°C ~ 125°C. This part is active and ROHS3 compliant. Selection of this variant is required only for automotive applications with explicit AEC-Q100 qualification requirements.
Frequently Asked Questions (FAQ)
Q: Can SN74HC151D be used as a direct replacement for MM74HC151M?
A: Yes, with consideration of output current differences. The SN74HC151D maintains identical supply voltage (2V ~ 6V) and operating temperature range (-40°C ~ 85°C). The higher output current (7.8mA versus 5.2mA) is compatible with the MM74HC151M application space. Verify that the circuit design does not depend on the lower current specification of the original part.
Q: What is the difference between SN74HC151DR and SN74HC151DT?
A: Both parts are electrically identical 1 x 8:1 multiplexers in 16-SOIC packaging with 2V ~ 6V supply and -40°C ~ 85°C operating range. The difference is packaging format: SN74HC151DR is supplied in Cut Tape and Digi-Reel format, while SN74HC151DT is supplied in Tape and Reel format. Select based on procurement and assembly requirements.
Q: Is the 16-SOIC package footprint identical across all substitute parts?
A: Yes. All substitute parts listed use the 16-SOIC package with 0.154" width and 3.90mm body dimension. PCB footprints are mechanically compatible for direct substitution without layout modification.
Q: Can I use CD74HC151M96 in place of MM74HC151M?
A: Yes. The CD74HC151M96 maintains identical electrical specifications (5.2mA output current, 2V ~ 6V supply) and 16-SOIC package. The extended temperature range (-55°C ~ 125°C) provides additional environmental coverage without functional changes. This part is active and ROHS3 compliant.
Q: What is the significance of the ROHS3 compliance marking?
A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. All active substitute parts carry ROHS3 compliance. The obsolete MM74HC151M and CD74HC151M (Harris) are not ROHS3 compliant, making active substitutes preferable for new designs.
Q: Does output current rating affect circuit functionality?
A: Output current rating determines the maximum load-driving capability. The MM74HC151M specifies 5.2mA per output. Substitute parts with higher ratings (7.8mA) can drive equivalent or greater loads. Substitutes with identical ratings (5.2mA) maintain the original load-driving specification. Verify application load requirements before selection.
Q: Are there temperature-related restrictions for substitute selection?
A: The MM74HC151M operates -40°C ~ 85°C. All listed substitutes meet or exceed this range. Extended-range parts (CD74HC151M96, SN74HC151QDRQ1) operate to -55°C or 125°C maximum, providing margin for industrial and automotive environments. Standard-range parts (SN74HC151D, SN74HC151DR) match the original specification exactly.
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