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PI5C3245QE Equivalent & Substitute Parts
Part Overview
The PI5C3245QE is an 8 x 1:1 bus switch logic IC manufactured by Diodes Incorporated in a 20-QSOP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The PI5C3245QE operates as a high-speed bus switch suitable for applications requiring signal routing and multiplexing in 5V logic systems.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Part Number | PI5C3245QE |
| Manufacturer | Diodes Incorporated |
| Type | Bus Switch |
| Circuit Configuration | 8 x 1:1 |
| Independent Circuits | 1 |
| Voltage Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 20-SSOP (0.154", 3.90mm Width) |
| Supplier Device Package | 20-QSOP |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the PI5C3245QE are qualified based on the following critical parameters:
- Circuit configuration: 8 x 1:1 bus switch topology
- Voltage supply range: 4.75V ~ 5.25V (primary specification) or 4V ~ 5.5V (compatible extended range)
- Operating temperature range: -40°C ~ 85°C
- Mounting type: Surface Mount
- Package compatibility: 20-QSOP, 20-SSOP, or 20-TSSOP (all 20-pin variants with equivalent pinout)
- RoHS3 compliance and REACH unaffected status
Substitutes are grouped into two categories: direct equivalents with identical electrical specifications and manufacturer-recommended alternatives with compatible but extended voltage ranges.
Parameter Comparison
| Part Number | Manufacturer | Circuit | Voltage Supply | Operating Temp | Package | Product Status | RoHS3 | MSL |
|---|---|---|---|---|---|---|---|---|
| PI5C3245QE | Diodes Incorporated | 8 x 1:1 | 4.75V ~ 5.25V | -40°C ~ 85°C | 20-QSOP | Obsolete | Yes | 1 |
| QS3245QG | Renesas Electronics | 8 x 1:1 | 4.75V ~ 5.25V | -40°C ~ 85°C | 20-QSOP | Active | Yes | 1 |
| QS3245QG8 | Renesas Electronics | 8 x 1:1 | 4.75V ~ 5.25V | -40°C ~ 85°C | 20-QSOP | Active | Yes | 1 |
| FST3245MTCX | onsemi | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Obsolete | Yes | 1 |
| QS32245QG | IDT | 1 x 8:1 | 4.75V ~ 5.25V | -40°C ~ 85°C | 20-QSOP | Active | Yes | N/A |
| SN74CBT3245ADBQR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-SSOP | Last Time Buy | Yes | 2 |
| SN74CBT3245ADBR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-SSOP | Last Time Buy | Yes | 1 |
| SN74CBT3245ADGVR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-TVSOP | Last Time Buy | Yes | 1 |
| SN74CBT3245APW | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Last Time Buy | Yes | 1 |
| SN74CBT3245APWR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP | Last Time Buy | Yes | 1 |
| SN74CBT3245CDBQR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-SSOP | Active | Yes | 2 |
Engineering Selection Recommendations
For applications currently using the PI5C3245QE, the following selection criteria apply:
Primary Substitutes (Identical Electrical Specifications): QS3245QG and QS3245QG8 from Renesas Electronics are direct functional equivalents with matching voltage supply range (4.75V ~ 5.25V) and identical circuit configuration. Both parts are in active production status, providing long-term availability. QS3245QG is supplied in tube packaging, while QS3245QG8 is supplied in tape and reel format for automated assembly.
Extended Voltage Range Alternatives: SN74CBT3245CDBQR from Texas Instruments is the only active substitute with extended voltage tolerance (4V ~ 5.5V). This part accommodates broader supply variations while maintaining the 8 x 1:1 circuit topology and -40°C to 85°C operating range. The 20-SSOP package is mechanically compatible with the original 20-QSOP footprint.
Last Time Buy Options: SN74CBT3245ADBQR, SN74CBT3245ADBR, SN74CBT3245ADGVR, SN74CBT3245APW, and SN74CBT3245APWR are classified as Last Time Buy from Texas Instruments. These parts maintain full electrical compatibility but are subject to end-of-life constraints. Selection of these parts requires confirmation of long-term supply availability.
Package Considerations: The QS32245QG from IDT features a 1 x 8:1 circuit configuration, which differs functionally from the 8 x 1:1 topology of the PI5C3245QE. This part is not recommended as a direct substitute without circuit redesign.
All recommended substitutes maintain RoHS3 compliance and REACH unaffected status consistent with the original part.
Frequently Asked Questions (FAQ)
Q: Can QS3245QG and QS3245QG8 be used interchangeably with PI5C3245QE? A: Yes. Both Renesas parts are electrically and functionally identical to the PI5C3245QE. The difference between QS3245QG and QS3245QG8 is packaging format only: tube versus tape and reel. Selection depends on assembly method and procurement requirements.
Q: What is the difference between the 4.75V ~ 5.25V and 4V ~ 5.5V voltage specifications? A: The PI5C3245QE and Renesas QS3245 series specify a nominal 5V supply with ±5% tolerance (4.75V ~ 5.25V). Texas Instruments SN74CBT3245 series specify ±10% tolerance (4V ~ 5.5V). Both ranges are compatible with standard 5V logic systems. The extended range provides greater margin for supply variations.
Q: Are the 20-QSOP, 20-SSOP, and 20-TSSOP packages mechanically compatible? A: All three packages are 20-pin surface mount variants with equivalent pinout and similar footprints. The primary differences are package width: 20-QSOP (3.90mm), 20-SSOP (3.90mm or 5.30mm depending on variant), and 20-TSSOP (4.40mm). PCB layout verification is required when changing package types, particularly for 5.30mm width variants.
Q: Why is QS32245QG listed as a substitute if it has a different circuit configuration? A: QS32245QG features a 1 x 8:1 configuration, which is functionally different from the 8 x 1:1 topology of PI5C3245QE. This part is listed as a manufacturer-recommended alternative but requires circuit redesign and is not a direct pin-for-pin replacement.
Q: What is the significance of the Last Time Buy status for Texas Instruments parts? A: Last Time Buy status indicates that the manufacturer has announced end-of-life for the product. These parts remain available for a limited period but will eventually be discontinued. For new designs or long-term production, active status parts (QS3245QG, QS3245QG8, SN74CBT3245CDBQR) are preferred.
Q: Does moisture sensitivity level affect part selection? A: Moisture Sensitivity Level (MSL) 1 indicates unlimited shelf life without baking. MSL 2 requires baking after one year of storage. The PI5C3245QE specifies MSL 1. SN74CBT3245ADBQR and SN74CBT3245CDBQR specify MSL 2, requiring additional handling procedures. For applications with extended storage requirements, MSL 1 parts are preferred.
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