PCA9701D,118 Equivalent & Substitute Parts

Part Overview

The PCA9701D,118 is a 16-channel input-only I/O expander with SPI serial interface operating at 5 MHz. Manufactured by NXP USA Inc., this component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. The part operates across a supply voltage range of 2.5V to 5.5V with an operating temperature range of -40°C to 125°C, making it suitable for industrial and commercial applications requiring serial-based I/O expansion.

Substiute Parts

PCA9701D,118

NXP USA Inc.In Stock: 1192PCA9701D,118 Datasheet

Current PartRFQ

PCA9701PW,118

NXP SemiconductorsIn Stock: 2168PCA9701PW,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCA9701D,118 is determined by functional equivalence across the following critical parameters:

• I/O Configuration: 16 input-only channels
• Serial Interface: SPI protocol at 5 MHz operation
• Electrical Specifications: 2.5V to 5.5V supply voltage compatibility
• Temperature Range: -40°C to 125°C operational envelope
• Interrupt Capability: Presence of interrupt output functionality
• Output Characteristics: Push-pull output configuration
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The PCA9701PW,118 meets all these criteria while offering an active product status and alternative packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The PCA9701PW,118 is the direct functional equivalent for the obsolete PCA9701D,118. Both components share identical electrical specifications, I/O configuration, and interface characteristics. The primary distinction lies in packaging format and product lifecycle status.

The PCA9701PW,118 offers the advantage of active product status, ensuring continued availability and manufacturing support. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications.

The package transition from 24-SOIC to 24-TSSOP represents a dimensional change requiring PCB layout modification. The 24-TSSOP package provides a smaller footprint (0.173" width versus 0.295"), which may offer space optimization benefits in constrained designs. Tape & Reel packaging of the substitute part supports automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the PCA9701PW,118 directly replace the PCA9701D,118 without design changes?

A: Electrical and functional compatibility is complete. PCB layout modification is required due to package differences (24-SOIC to 24-TSSOP). Pin-to-pin functionality remains identical.

Q: What are the key differences between these parts?

A: The main differences are product status (obsolete versus active), package type (24-SOIC versus 24-TSSOP), and packaging format (standard versus Tape & Reel). All electrical parameters and I/O specifications are identical.

Q: Are both parts ROHS3 compliant?

A: Yes, both the PCA9701D,118 and PCA9701PW,118 are ROHS3 compliant and REACH unaffected.

Q: What is the impact of the package change on circuit design?

A: The 24-TSSOP package has a narrower body width (4.40mm versus 7.50mm) and different pin pitch characteristics. PCB footprint and layout must be redesigned accordingly. Electrical performance and pin functionality remain unchanged.

Q: Is the PCA9701PW,118 suitable for the same temperature and voltage operating conditions?

A: Yes, both parts operate identically across the -40°C to 125°C temperature range and 2.5V to 5.5V supply voltage range.