Request Quote
(Ships tomorrow)
CBT3245APW Equivalent & Substitute Parts
Part Overview
The CBT3245APW is an 8x1:1 bus switch logic IC manufactured by Nexperia USA Inc., housed in a 20-TSSOP package. This component operates across a 4V to 5.5V supply range and supports operating temperatures from -40°C to 85°C. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Bus switches of this configuration are essential for multiplexing and signal routing applications in digital systems.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Type | Bus Switch |
| Circuit Configuration | 8 x 1:1 |
| Independent Circuits | 1 |
| Voltage Supply Range | 4V ~ 5.5V |
| Operating Temperature Range | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the CBT3245APW is determined by the following critical parameters:
- Circuit Configuration: All substitutes must maintain 8x1:1 bus switch topology
- Voltage Supply Range: Operating voltage must encompass or match the 4V to 5.5V specification
- Operating Temperature: Full -40°C to 85°C range required
- Package Compatibility: Physical package dimensions and pin count must align with application requirements
- RoHS Compliance: ROHS3 compliance maintained across all substitutes
- Moisture Sensitivity: MSL rating affects storage and handling requirements
Substitutes are grouped by package type: TSSOP variants maintain identical footprints, while SSOP and QSOP variants offer alternative package options with the same electrical functionality.
Parameter Comparison
| Part Number | Manufacturer | Circuit | Voltage Supply | Temp Range | Package | MSL | Product Status |
|---|---|---|---|---|---|---|---|
| CBT3245APW | Nexperia USA Inc. | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP (0.173", 4.40mm) | 1 | Obsolete |
| PI5C3245LE | Diodes Incorporated | 8 x 1:1 | 4.75V ~ 5.25V | -40°C ~ 85°C | 20-TSSOP (0.173", 4.40mm) | 1 | Last Time Buy |
| PI5C3245LEX | Diodes Incorporated | 8 x 1:1 | 4.75V ~ 5.25V | -40°C ~ 85°C | 20-TSSOP (0.173", 4.40mm) | 1 | Last Time Buy |
| PI5C3245QEX | Diodes Incorporated | 8 x 1:1 | 4.75V ~ 5.25V | -40°C ~ 85°C | 20-QSOP (0.154", 3.90mm) | 1 | Last Time Buy |
| SN74CBT3245ADBQR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-SSOP (0.154", 3.90mm) | 2 | Last Time Buy |
| SN74CBT3245ADBR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-SSOP (0.209", 5.30mm) | 1 | Last Time Buy |
| SN74CBT3245ADGVR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-TVSOP (0.173", 4.40mm) | 1 | Last Time Buy |
| SN74CBT3245APW | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-TSSOP (0.173", 4.40mm) | 1 | Last Time Buy |
| SN74CBT3245CDBQR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-SSOP (0.154", 3.90mm) | 2 | Active |
| SN74CBT3245CDBR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-SSOP (0.209", 5.30mm) | 1 | Active |
| SN74CBT3245CDGVR | Texas Instruments | 8 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 20-TFSOP (0.173", 4.40mm) | 1 | Active |
Engineering Selection Recommendations
Direct Footprint Replacement (20-TSSOP): SN74CBT3245APW (Texas Instruments) provides the most direct substitution with identical package dimensions, voltage range, and temperature specifications. This part maintains active product status, ensuring long-term availability and supply chain stability.
Alternative TSSOP Options: PI5C3245LE and PI5C3245LEX (Diodes Incorporated) offer TSSOP packaging with narrower voltage tolerance (4.75V to 5.25V). These parts are suitable for applications operating within this voltage window and provide equivalent electrical performance.
Compact Package Alternative (20-QSOP): PI5C3245QEX provides a smaller footprint option for space-constrained designs. The 20-QSOP package (0.154" width) reduces board area while maintaining full functional equivalence.
SSOP Package Variants: SN74CBT3245CDBQR and SN74CBT3245CDBR (Texas Instruments) offer SSOP packaging with active product status. These variants support designs requiring alternative package geometries and provide superior long-term availability.
TVSOP/TFSOP Option: SN74CBT3245CDGVR provides a thin-profile package alternative with active status, suitable for applications with height constraints.
Frequently Asked Questions (FAQ)
Q: Can PI5C3245LE replace CBT3245APW in all applications? A: PI5C3245LE maintains identical TSSOP package dimensions and circuit configuration. However, its voltage supply range (4.75V to 5.25V) is narrower than the original (4V to 5.5V). Substitution is valid only if your application operates within the 4.75V to 5.25V window.
Q: What is the difference between TSSOP, SSOP, and QSOP packages? A: These are surface-mount package types with different physical dimensions. TSSOP (0.173" width) and QSOP (0.154" width) are compact variants. SSOP packages vary in width (0.154" or 0.209"). Package selection depends on PCB layout requirements and available board space. Pin count and electrical function remain identical across all variants.
Q: Why do some substitutes have MSL rating of 2 instead of 1? A: Moisture Sensitivity Level (MSL) indicates storage and handling requirements. MSL 1 allows unlimited shelf life under controlled conditions. MSL 2 requires storage below 30°C and 60% relative humidity, with a 1-year maximum shelf life. Parts with MSL 2 require more stringent moisture control during manufacturing and assembly.
Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitutes maintain ROHS3 compliance, meeting environmental and regulatory requirements for lead-free manufacturing.
Q: Which substitute offers the best long-term availability? A: SN74CBT3245CDBQR, SN74CBT3245CDBR, and SN74CBT3245CDGVR carry active product status from Texas Instruments, indicating ongoing production and supply chain support. These parts are recommended for new designs requiring extended component lifecycle.
Q: Can I use SN74CBT3245ADGVR as a direct replacement? A: SN74CBT3245ADGVR uses a TVSOP package (0.173" width, similar to TSSOP) and matches the voltage and temperature specifications. However, verify PCB footprint compatibility, as TVSOP and TSSOP have different pin configurations despite similar package widths.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts