onsemi MM74HC
MM74HC variants from onsemi
MM74HC Overview
What changes between part numbers, and what to check before you lock the BOM — Logic Comparators.
MM74HC is a onsemi order-code family — not a single orderable MPN. This page lists 16 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
Package: 20-SOIC (0.295", 7.50mm Width) | Mounting Type: Surface Mount | Supply Voltage: 2V ~ 6V | Number of Bits: 8 | Operating Temperature: -40°C ~ 85°C Other listed variants describe: IC GATE NOR 4CH 2-INP 14TSSOP; DECODER/DRIVER, HC/UH SERIES, IN.
Across listed variants, watch these parameters: packages: 20-SOIC (0.295", 7.50mm Width).
Suffix examples in this family: 688WMX, 02MTC, 138MX, 14MTC, 175MTCX, 240MTCX, 273MTCX, 540MTCX. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Example MPNs: MM74HC688WMX, MM74HC02MTC, MM74HC138MX, MM74HC14MTC, MM74HC175MTCX, MM74HC240MTCX.
Key Features
- Footprint / package: 20-SOIC (0.295", 7.50mm Width)Single package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 16 distinct suffix patternsExamples: 688WMX, 02MTC, 138MX, 14MTC, 175MTCX (+11 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Logic Comparators — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 16 MM74HC part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| MM74HC688WMX | Package: 20-SOIC (0.295", 7.50mm Width) | Mounting Type: Surface Mount | Supply Voltage: 2V ~ 6V | Number of Bits: 8 | Operating Temperature: -40°C ~ 85°C | 20-SOIC (0.295", 7.50mm Width) | onsemi | Active | Compliant | In Stock | |
| MM74HC02MTC | IC GATE NOR 4CH 2-INP 14TSSOP | - | onsemi | Active | Compliant | In Stock | |
| MM74HC138MX | DECODER/DRIVER, HC/UH SERIES, IN | - | onsemi | Active | Compliant | In Stock | |
| MM74HC14MTC | Inverters Hex Inv Schmitt Trig | - | onsemi | Active | Compliant | In Stock | |
| MM74HC175MTCX | Quad D-Type Flip-Flop, 28MHz, CMOS, TSSOP, SM | - | onsemi | Active | Compliant | In Stock | |
| MM74HC240MTCX | BUS DRIVER, HC/UH SERIES, 2-FUNC | - | onsemi | Active | Compliant | In Stock | |
| MM74HC273MTCX | D FLIP-FLOP, HC/UH SERIES, 1-FUN | - | onsemi | Active | Compliant | In Stock | |
| MM74HC540MTCX | Buffers & Line Drivers Inv Oct 3-STATE Buf | - | onsemi | Active | Compliant | In Stock | |
| MM74HC540WM | Buffers & Line Drivers Inv Oct 3-STATE Buf | - | onsemi | Active | Compliant | In Stock | |
| MM74HC540WMX | Buffers & Line Drivers Inv Oct 3-STATE Buf | - | onsemi | Active | Compliant | In Stock | |
| MM74HC541MTCX | BUS DRIVER, HC/UH SERIES, 1-FUNC | - | onsemi | Active | Compliant | In Stock | |
| MM74HC573MTC | IC D-TYPE TRANSP SGL 8:8 20TSSOP | - | onsemi | Active | Compliant | In Stock | |
| MM74HC74AMTC | Flip Flops Dl D-Type Flip-Flop | - | onsemi | Active | Compliant | In Stock | |
| MM74HC86M | 4-Element XOR Gate, 2-IN CMOS, 6V, 20ns, SOIC | - | onsemi | Active | Compliant | In Stock | |
| MM74HC86MTC | IC GATE XOR 4CH 2-INP 14TSSOP | - | onsemi | Active | Compliant | In Stock | |
| MM74HC86MTCX | Quad 2-Input XOR Gate IC, CMOS, TSSOP, 2V-6V | - | onsemi | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on MM74HC map to package, grade, and reel options.
MM74HC uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: 688WMX, 02MTC, 138MX, 14MTC, 175MTCX, 240MTCX, 273MTCX, 540MTCX, 540WM, 540WMX (+6 more).
Full MPN examples: MM74HC688WMX, MM74HC02MTC, MM74HC138MX, MM74HC14MTC, MM74HC175MTCX.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
How to Choose the Right MM74HC Logic Comparators
Match the footprint first
Packages here: 20-SOIC (0.295", 7.50mm Width). Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For MM74HC, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "MM74HC" — include the full suffix (e.g. 688WMX, 02MTC, 138MX). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for MM74HC product family
Identity
Variant Parameters
Source MM74HC with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 16 ordering variants from onsemi. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the MM74HC product family.