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PI49FCT3807ASE Equivalent & Substitute Parts
Part Overview
The PI49FCT3807ASE is a Clock Fanout Buffer (Distribution) IC manufactured by Diodes Incorporated, designed for 1:10 clock distribution at 66 MHz in a 20-SOIC package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The 74FCT3807 series from Renesas Electronics Corporation provides direct functional equivalents with enhanced specifications and active product status.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | PI49FCT3807ASE |
| Manufacturer | Diodes Incorporated |
| Product Category | Clock/Timing - Fanout Buffer (Distribution) |
| Type | Fanout Buffer (Distribution) |
| Number of Circuits | 1 |
| Ratio - Input:Output | 1:10 |
| Input Type | CMOS, TTL |
| Output Type | CMOS, TTL |
| Frequency - Max | 66 MHz |
| Voltage - Supply | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the PI49FCT3807ASE is determined by the following critical parameters that must remain constant across equivalent parts:
- Functional Type: Fanout Buffer (Distribution) IC with 1:10 ratio
- Package / Case: 20-SOIC (0.295", 7.50mm Width) - ensures PCB compatibility
- Input/Output Logic Levels: CMOS and TTL compatible
- Supply Voltage: 3V ~ 3.6V range
- Mounting Type: Surface Mount
- Compliance: ROHS3 Compliant, REACH Unaffected
The 74FCT3807 series from Renesas Electronics Corporation meets all these requirements. Substitute variants differ in:
- Frequency - Max: Enhanced to 100 MHz (exceeds original 66 MHz specification)
- Operating Temperature Range: Available in two grades (0°C ~ 70°C or -40°C ~ 85°C)
- Packaging Format: Tube or Tape & Reel (TR)
- Product Status: Active (versus obsolete original)
All substitute parts maintain identical electrical and mechanical compatibility with the original PI49FCT3807ASE while offering improved performance specifications and active manufacturing status.
Parameter Comparison
| Parameter | PI49FCT3807ASE | 74FCT3807ASOG | 74FCT3807ASOG8 | 74FCT3807ASOGI | 74FCT3807ASOGI8 | 74FCT3807SOG | 74FCT3807SOG8 | 74FCT3807SOGI | 74FCT3807SOGI8 |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Diodes Incorporated | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Type | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) |
| Ratio - Input:Output | 1:10 | 1:10 | 1:10 | 1:10 | 1:10 | 1:10 | 1:10 | 1:10 | 1:10 |
| Input Type | CMOS, TTL | LVTTL | LVTTL | LVTTL | LVTTL | LVTTL | LVTTL | LVTTL | LVTTL |
| Output Type | CMOS, TTL | CMOS, TTL | CMOS, TTL | CMOS, TTL | CMOS, TTL | CMOS, TTL | CMOS, TTL | CMOS, TTL | CMOS, TTL |
| Frequency - Max | 66 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Voltage - Supply | 3V ~ 3.6V | 3V ~ 3.6V | 3V ~ 3.6V | 3V ~ 3.6V | 3V ~ 3.6V | 3V ~ 3.6V | 3V ~ 3.6V | 3V ~ 3.6V | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | 0°C ~ 70°C | 0°C ~ 70°C | -40°C ~ 85°C | -40°C ~ 85°C | 0°C ~ 70°C | 0°C ~ 70°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
All 74FCT3807 variants from Renesas Electronics Corporation are direct functional substitutes for the PI49FCT3807ASE. Selection among substitute options depends on application requirements:
For Extended Temperature Range Applications (-40°C ~ 85°C): Select 74FCT3807ASOGI, 74FCT3807ASOGI8, 74FCT3807SOGI, or 74FCT3807SOGI8. These variants maintain the full temperature operating range of the original part.
For Standard Temperature Range Applications (0°C ~ 70°C): Select 74FCT3807ASOG, 74FCT3807ASOG8, 74FCT3807SOG, or 74FCT3807SOG8. These variants are suitable for commercial-grade applications with reduced temperature requirements.
For Packaging Format: Tube packaging (ASOG, ASOGI, SOG, SOGI) is appropriate for lower-volume applications. Tape & Reel (TR) packaging (ASOG8, ASOGI8, SOG8, SOGI8) is optimized for high-volume automated assembly.
All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical electrical specifications. The enhanced 100 MHz frequency specification of the 74FCT3807 series provides performance margin beyond the original 66 MHz specification.
Frequently Asked Questions (FAQ)
Q: Can the 74FCT3807 series directly replace the PI49FCT3807ASE on existing PCBs?
A: Yes. All 74FCT3807 variants use the identical 20-SOIC (0.295", 7.50mm Width) package with the same pin configuration, enabling direct PCB substitution without layout modifications.
Q: What is the difference between the temperature-rated variants?
A: The 74FCT3807ASOGI/ASOGI8/SOGI/SOGI8 variants operate across -40°C ~ 85°C, matching the original part's extended temperature range. The 74FCT3807ASOG/ASOG8/SOG/SOG8 variants operate across 0°C ~ 70°C for standard commercial applications. Select based on your system's thermal requirements.
Q: Does the higher 100 MHz frequency specification affect compatibility?
A: No. The 100 MHz maximum frequency of the 74FCT3807 series is a performance enhancement. Applications operating at or below 66 MHz experience no adverse effects. The higher frequency capability provides design margin for future upgrades.
Q: What is the difference between Tube and Tape & Reel packaging?
A: Tube packaging (ASOG, ASOGI, SOG, SOGI) is used for manual handling and lower-volume orders. Tape & Reel (TR) packaging (ASOG8, ASOGI8, SOG8, SOGI8) is formatted for automated pick-and-place assembly equipment. Select based on your manufacturing process.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All 74FCT3807 variants are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance equivalent to the original PI49FCT3807ASE.
Q: Why is the original PI49FCT3807ASE marked as obsolete?
A: Diodes Incorporated has discontinued this part number. The 74FCT3807 series from Renesas Electronics Corporation provides equivalent functionality with active manufacturing status and improved specifications, making it the recommended replacement for new designs and ongoing production.
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