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74FCT2245CTSOG8 Equivalent & Substitute Parts
Part Overview
The 74FCT2245CTSOG8 is a non-inverting octal bidirectional transceiver manufactured by Renesas Electronics Corporation. This logic IC features 1 element with 8 bits per element, 3-state output capability, and operates within a 4.75V to 5.25V supply voltage range. The device is packaged in a 20-SOIC surface mount configuration with tape and reel packaging. The part is currently in Last Time Buy status, making identification of equivalent and substitute components essential for ongoing design support and procurement planning.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74FCT2245CTSOG8 |
| Manufacturer | Renesas Electronics Corporation |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 15mA, 12mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Last Time Buy |
Substitute Part Grouping Explanation
Substitution of the 74FCT2245CTSOG8 is determined by strict alignment of the following electrical and mechanical parameters:
Critical Parameters for Substitution:
- Logic Type: Transceiver, Non-Inverting
- Number of Elements: 1
- Number of Bits per Element: 8
- Output Type: 3-State
- Voltage - Supply: 4.75V ~ 5.25V
- Package / Case: 20-SOIC (0.295", 7.50mm Width)
- Mounting Type: Surface Mount
Allowable Variations:
- Current - Output High, Low: The main part specifies 15mA, 12mA. Substitute parts with equal or higher current ratings (15mA or greater for high output, 12mA or greater for low output) are electrically compatible.
- Operating Temperature: The main part operates -40°C ~ 85°C. Substitute parts with equal or wider temperature ranges are acceptable.
- Packaging Format: Tape & Reel (TR), Tube, and Bulk packaging are interchangeable for the same component.
- Manufacturer: Multiple manufacturers produce compatible 74FCT2245 series devices.
Substitute parts are grouped into two categories: Manufacturer Recommended substitutes (direct cross-references with active product status) and Parametric Equivalents (parts meeting all electrical and mechanical specifications).
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements / Bits | Output Type | Current High / Low (mA) | Supply Voltage | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|
| 74FCT2245CTSOG8 | Renesas | Non-Inverting | 1 / 8 | 3-State | 15 / 12 | 4.75-5.25V | -40 to 85 | 20-SOIC | Last Time Buy |
| CD74FCT245M96 | Texas Instruments | Non-Inverting | 1 / 8 | 3-State | 15 / 64 | 4.75-5.25V | 0 to 70 | 20-SOIC | Active |
| CY74FCT2245ATSOC | Texas Instruments | Non-Inverting | 1 / 8 | 3-State | 15 / 12 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
| CY74FCT2245TSOC | Texas Instruments | Non-Inverting | 1 / 8 | 3-State | 15 / 12 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
| CY74FCT245ATSOC | Texas Instruments | Non-Inverting | 1 / 8 | 3-State | 32 / 64 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
| CY74FCT245ATSOCT | Texas Instruments | Non-Inverting | 1 / 8 | 3-State | 32 / 64 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
| CY74FCT245CTSOC | Texas Instruments | Non-Inverting | 1 / 8 | 3-State | 32 / 64 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
| CY74FCT245TSOC | Cypress Semiconductor | Non-Inverting | 1 / 8 | 3-State | 32 / 64 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
| CY74FCT245TSOCT | Texas Instruments | Non-Inverting | 1 / 8 | 3-State | 32 / 64 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
| 74FCT2245ATSOG8 | IDT | Non-Inverting | 1 / 8 | 3-State | 15 / 12 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
| CY74FCT2245ATSOCT | Texas Instruments | Non-Inverting | 1 / 8 | 3-State | 15 / 12 | 4.75-5.25V | -40 to 85 | 20-SOIC | Active |
Engineering Selection Recommendations
Preferred Substitutes (Exact Electrical Match):
CY74FCT2245ATSOC, CY74FCT2245TSOC, 74FCT2245ATSOG8, and CY74FCT2245ATSOCT provide identical electrical specifications to the 74FCT2245CTSOG8, including matching output current ratings (15mA high, 12mA low) and operating temperature range (-40°C to 85°C). All are ROHS3 compliant with active product status, ensuring long-term availability and supply chain stability.
Alternative Substitutes (Higher Current Output):
CY74FCT245ATSOC, CY74FCT245ATSOCT, CY74FCT245CTSOC, CY74FCT245TSOC, and CY74FCT245TSOCT feature higher output current ratings (32mA high, 64mA low) while maintaining all other electrical and mechanical parameters. These parts are suitable for applications requiring greater drive capability and operate across the full -40°C to 85°C temperature range.
Limited Compatibility:
CD74FCT245M96 operates within a narrower temperature range (0°C to 70°C) compared to the main part. This part is suitable only for applications not requiring the extended low-temperature performance of -40°C.
All substitute parts maintain ROHS3 compliance, MSL rating of 1 (Unlimited), and identical 20-SOIC packaging, ensuring mechanical and environmental compatibility.
Frequently Asked Questions (FAQ)
Q: Can I use CD74FCT245M96 as a direct replacement for 74FCT2245CTSOG8?
A: CD74FCT245M96 is electrically compatible but operates within a narrower temperature range (0°C to 70°C versus -40°C to 85°C). Use this part only if your application does not require operation below 0°C or above 70°C.
Q: What is the difference between parts with 15mA/12mA output current and those with 32mA/64mA?
A: Output current rating indicates the maximum current the device can source (high) or sink (low) at its outputs. Parts with higher ratings provide greater drive capability for downstream logic circuits. Both are electrically compatible; selection depends on load requirements.
Q: Are Tape & Reel, Tube, and Bulk packaging interchangeable?
A: Yes. Packaging format affects handling and storage but does not impact electrical performance or mechanical fit. Select based on your assembly process requirements and quantity needs.
Q: Why is the 74FCT2245CTSOG8 listed as Last Time Buy?
A: Last Time Buy status indicates the manufacturer is discontinuing production. Equivalent parts with Active status (such as CY74FCT2245ATSOC or 74FCT2245ATSOG8) should be evaluated for new designs or long-term production requirements.
Q: Do all substitute parts have the same RoHS and REACH compliance?
A: All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance profile of the 74FCT2245CTSOG8. Verify specific certifications with your supplier for critical applications.
Q: Can I mix different manufacturers' parts in the same design?
A: Yes. All listed parts meet identical electrical and mechanical specifications for the 74FCT2245 series. Cross-manufacturer substitution is supported within the same design, provided all other system requirements are met.
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