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MM74C04M Equivalent & Substitute Parts
Part Overview
The MM74C04M is a 6-channel inverter logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This device implements basic logic inversion functionality across six independent channels with single input per channel. The MM74C04M is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. Substitute parts must maintain identical logic functionality, pin configuration, and electrical performance within specified operating ranges.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Inverter |
| Number of Circuits | 6 |
| Number of Inputs | 1 |
| Voltage - Supply Range | 3V ~ 15V |
| Package Type | 14-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -55°C ~ 125°C |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the MM74C04M is based on the following critical parameters:
- Logic Function: Both main and substitute parts must implement 6-channel inverter logic with identical truth table behavior
- Pin Configuration: 14-pin SOIC package with matching pinout ensures direct PCB compatibility
- Supply Voltage Range: Operating range of 3V to 15V ensures compatibility with existing power supply designs
- Output Drive Capability: Output current specifications determine load-driving capacity in target applications
- Propagation Delay: Maximum delay specifications affect timing-critical circuit performance
- Operating Temperature: Temperature range must encompass or match the application environment
The HEF4069UBT,652 from NXP USA Inc. meets these substitution criteria as a 6-channel inverter in identical 14-SOIC packaging with overlapping electrical specifications.
Parameter Comparison
| Parameter | MM74C04M (onsemi) | HEF4069UBT,652 (NXP USA Inc.) |
|---|---|---|
| Logic Type | Inverter | Inverter |
| Number of Circuits | 6 | 6 |
| Number of Inputs | 1 | 1 |
| Voltage - Supply | 3V ~ 15V | 3V ~ 15V |
| Current - Output High, Low | 8mA, 8mA | 3.4mA, 3.4mA |
| Input Logic Level - Low | 1.5V ~ 2V | 1V ~ 2.5V |
| Input Logic Level - High | 4.6V ~ 8V | 4V ~ 12.5V |
| Max Propagation Delay @ V, Max CL | 60ns @ 10V, 50pF | 30ns @ 15V, 50pF |
| Operating Temperature | -55°C ~ 125°C | -40°C ~ 125°C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | 14-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The HEF4069UBT,652 is a direct functional substitute for the MM74C04M based on matching logic architecture, pin configuration, and supply voltage specifications. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete MM74C04M.
Key considerations for selection:
- Output Current: The HEF4069UBT,652 provides reduced output drive current (3.4mA vs. 8mA). Applications requiring higher load current must verify compatibility with target circuit impedance.
- Propagation Delay: The HEF4069UBT,652 exhibits faster propagation delay (30ns vs. 60ns), which is advantageous for timing-sensitive applications and does not create backward compatibility issues.
- Operating Temperature Lower Bound: The HEF4069UBT,652 minimum operating temperature is -40°C versus -55°C for the MM74C04M. Applications requiring operation below -40°C must retain the MM74C04M or identify alternative solutions.
- Compliance: Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, ensuring equivalent regulatory treatment.
Frequently Asked Questions (FAQ)
Q: Can the HEF4069UBT,652 replace the MM74C04M in all applications?
A: The HEF4069UBT,652 is functionally equivalent for most applications. Verify output current requirements (3.4mA vs. 8mA) and minimum operating temperature (-40°C vs. -55°C) against your specific circuit design before substitution.
Q: Are the pin configurations identical between these parts?
A: Yes. Both parts are 6-channel inverters in 14-SOIC packaging with identical pinout, enabling direct PCB-level substitution without layout modifications.
Q: What is the significance of the propagation delay difference?
A: The HEF4069UBT,652 exhibits faster propagation delay (30ns at 15V versus 60ns at 10V for the MM74C04M). This faster switching does not create compatibility issues in standard logic applications and may improve timing margins in delay-sensitive circuits.
Q: Why is the MM74C04M listed as obsolete?
A: Obsolete status indicates the manufacturer has discontinued production. The HEF4069UBT,652 provides equivalent functionality with active production status, supporting long-term design continuity.
Q: Are there supply voltage compatibility concerns?
A: Both parts operate across the identical 3V to 15V supply range, ensuring direct compatibility with existing power supply designs.
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