PCA9500D,118 Equivalent & Substitute Parts

Part Overview

The PCA9500D,118 is an 8-channel I/O Expander IC designed for I2C and SMBus communication at 400 kHz, packaged in a 16-SO surface mount configuration. This component integrates EEPROM and Power-On Reset (POR) features with push-pull output capability, operating across a 2.5V to 3.6V supply range and -40°C to 85°C temperature range.

The PCA9500D,118 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements for legacy systems or new designs requiring this functional specification.

Substiute Parts

PCA9500D,118

NXP USA Inc.In Stock: 1022PCA9500D,118 Datasheet

Current PartRFQ

PCA9500PW,118

NXP USA Inc.In Stock: 3446PCA9500PW,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCA9500D,118 is determined by strict equivalence across the following critical parameters:

• Functional Equivalence: 8 I/O channels, I2C/SMBus interface at 400 kHz
• Electrical Compatibility: Identical voltage supply range (2.5V ~ 3.6V), output current specifications (100µA source, 25mA sink), and operating temperature range (-40°C ~ 85°C)
• Feature Parity: Presence of EEPROM and POR functionality
• Output Configuration: Push-pull output type
• Compliance Alignment: ROHS3 compliance and MSL Level 1 rating

The PCA9500PW,118 meets all these criteria. The primary distinction is the package format: the substitute uses 16-TSSOP (thin shrink small outline package) versus the original 16-SO (small outline package). Both are surface mount configurations with identical electrical and functional specifications.

Parameter Comparison

Engineering Selection Recommendations

The PCA9500PW,118 is the direct functional equivalent to the PCA9500D,118. Both components are manufactured by NXP USA Inc. and maintain identical electrical specifications, feature sets, and compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN classification).

The primary consideration for selection is package format compatibility. The PCA9500PW,118 uses a 16-TSSOP package (0.173" width) compared to the 16-SOIC package (0.295" width) of the original part. This represents a smaller footprint suitable for space-constrained applications.

The PCA9500PW,118 carries Active product status with higher inventory availability (3400 Pcs), whereas the PCA9500D,118 is Obsolete. For new designs or production continuity, the PCA9500PW,118 is the recommended selection.

Frequently Asked Questions (FAQ)

Q: Can the PCA9500PW,118 directly replace the PCA9500D,118 in existing designs?

A: Electrical and functional replacement is direct. PCB layout modification is required due to package format differences (16-SOIC to 16-TSSOP). Pin assignments remain identical; only physical footprint dimensions change.

Q: Are there any voltage or current limitations when substituting?

A: No. Both parts operate identically across the 2.5V to 3.6V supply range with identical output current specifications (100µA source, 25mA sink).

Q: What is the significance of the package width difference?

A: The 16-TSSOP package (4.40mm width) is narrower than the 16-SOIC package (7.50mm width). This allows for higher component density on PCBs but requires updated footprint definitions in design files.

Q: Are both parts compliant with current environmental and trade regulations?

A: Yes. Both the PCA9500D,118 and PCA9500PW,118 are ROHS3 compliant, REACH Unaffected, and classified under EAR99 ECCN with identical HTSUS codes (8542.39.0001).

Q: Why is the original part listed as Obsolete?

A: The PCA9500D,118 has reached end-of-life status. The PCA9500PW,118 represents the active production equivalent, ensuring long-term component availability and supply chain continuity.