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PI74FCT541TSE Equivalent & Substitute Parts
Part Overview
The PI74FCT541TSE is a non-inverting buffer logic integrated circuit manufactured by Diodes Incorporated, designed for 8-bit buffering applications with 3-state output capability. This device operates within the 74FCT logic family and is packaged in a 20-SOIC surface mount configuration. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | PI74FCT541TSE |
| Manufacturer | Diodes Incorporated |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Output Type | 3-State |
| Current - Output High, Low | 15mA, 64mA |
| 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 |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the PI74FCT541TSE are grouped based on the following critical parameters that determine functional and mechanical compatibility:
Primary Substitution Criteria:
- Logic Type: Buffer, Non-Inverting (must match)
- Number of Elements: 1 (must match)
- Number of Bits per Element: 8 (must match)
- Output Type: 3-State (must match)
- Package / Case: 20-SOIC (must match)
- Voltage - Supply: 4.75V ~ 5.25V (must match)
- Mounting Type: Surface Mount (must match)
Secondary Compatibility Parameters:
- Current - Output High, Low: Acceptable ranges are 15mA/64mA or 15mA/12mA or 32mA/64mA
- Operating Temperature: Acceptable ranges are -40°C ~ 85°C or 0°C ~ 70°C
- Packaging Format: Tube or Tape & Reel (TR)
Substitute parts are derived from two base product numbers: 74FCT541 and 74FCT2541. All listed substitutes maintain identical electrical specifications for supply voltage, logic function, and package configuration. Variations in output current ratings and operating temperature ranges are documented to enable selection based on specific application requirements.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements | Bits/Element | Output Type | I_out High/Low (mA) | V_supply (V) | Temp Range (°C) | Package | Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| PI74FCT541TSE | Diodes Inc. | Buffer, Non-Inv | 1 | 8 | 3-State | 15/64 | 4.75~5.25 | -40~85 | 20-SOIC | Obsolete | 695 |
| CD74FCT541M | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 15/64 | 4.75~5.25 | 0~70 | 20-SOIC | Active | 1366 |
| CY74FCT2541ATSOC | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 15/12 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 1431 |
| CY74FCT2541CTSOC | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 15/12 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 1258 |
| CY74FCT2541TSOC | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 15/12 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 2457 |
| CY74FCT2541TSOCT | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 15/12 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 865 |
| CY74FCT541ATSOC | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 32/64 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 1635 |
| CY74FCT541ATSOCT | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 32/64 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 2200 |
| CY74FCT541CTSOC | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 32/64 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 2200 |
| CY74FCT541CTSOCT | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 32/64 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 868 |
| CY74FCT541TSOC | Texas Instruments | Buffer, Non-Inv | 1 | 8 | 3-State | 32/64 | 4.75~5.25 | -40~85 | 20-SOIC | Active | 1837 |
Engineering Selection Recommendations
All listed substitute parts are active products from Texas Instruments and maintain ROHS3 compliance and MSL 1 (Unlimited) ratings consistent with the original PI74FCT541TSE. Selection among substitutes should be based on the following factors:
For Direct Replacement (Matching Output Current 15mA/64mA): CD74FCT541M is the primary direct substitute. This part maintains identical output current specifications and operates across the extended temperature range of -40°C to 85°C. The narrower commercial temperature range (0°C to 70°C) of this device should be evaluated against application requirements.
For Extended Temperature Operation (-40°C to 85°C): CY74FCT541 series parts (CY74FCT541ATSOC, CY74FCT541ATSOCT, CY74FCT541CTSOC, CY74FCT541CTSOCT, CY74FCT541TSOC) provide full temperature range coverage matching the original part. These parts feature higher output current capability (32mA/64mA), which provides enhanced drive capability for demanding applications.
For Reduced Output Current Applications: CY74FCT2541 series parts (CY74FCT2541ATSOC, CY74FCT2541CTSOC, CY74FCT2541TSOC, CY74FCT2541TSOCT) operate across the extended temperature range with reduced output low current (12mA), suitable for applications with lower current requirements.
Packaging Considerations: Tube packaging is standard for most substitutes. Tape & Reel (TR) packaging variants are available for high-volume production environments and are identified by the "T" suffix in the part number.
Frequently Asked Questions (FAQ)
Q: Can I use CY74FCT2541ATSOC as a direct replacement for PI74FCT541TSE? A: CY74FCT2541ATSOC is functionally compatible as a non-inverting 8-bit buffer in 20-SOIC packaging with 3-state output. The primary difference is reduced output low current (12mA versus 64mA). This substitution is valid if your application does not require the higher current drive capability of the original part.
Q: What is the difference between CY74FCT541ATSOC and CY74FCT541ATSOCT? A: Both parts are electrically identical. The difference is packaging format: ATSOC uses Tube packaging, while ATSOCT uses Tape & Reel (TR) packaging. Selection depends on procurement and assembly requirements.
Q: Does CD74FCT541M have the same temperature range as PI74FCT541TSE? A: No. CD74FCT541M operates from 0°C to 70°C, while PI74FCT541TSE operates from -40°C to 85°C. If your application requires operation below 0°C or above 70°C, select a CY74FCT541 series part instead.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, consistent with the original PI74FCT541TSE.
Q: Which substitute has the highest inventory availability? A: CY74FCT2541TSOC has the highest inventory at 2,457 pieces, followed by CY74FCT541CTSOC and CY74FCT541ATSOCT at 2,200 pieces each.
Q: Can I mix different substitute part numbers in the same design? A: All substitutes are pin-compatible and functionally equivalent within their specified parameter ranges. However, maintaining consistent part numbers across production batches is recommended for traceability and quality control purposes.
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