PCF8575CDGVR Equivalent & Substitute Parts

Part Overview

The PCF8575CDGVR is a 16-bit I/O expander designed for I2C and SMBus communication at 400 kHz, manufactured by Texas Instruments in a 24-TVSOP surface mount package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The PCF8575CDGVR provides open drain output configuration with interrupt output capability and power-on reset (POR) functionality, operating across a 4.5V to 5.5V supply range and -40°C to 85°C temperature range.

Substiute Parts

PCF8575CDGVR

Texas InstrumentsIn Stock: 1057PCF8575CDGVR Datasheet

Current PartRFQ

PCF8575PWR

Texas InstrumentsIn Stock: 19433PCF8575PWR Datasheet

MFR RecommendedRFQ

XRA1201IG24TR-F

MaxLinear, Inc.In Stock: 3673XRA1201IG24TR-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PCF8575CDGVR is determined by the following critical parameters:

• I/O Count: 16-bit configuration required
• Interface Protocol: I2C and SMBus compatibility at 400 kHz
• Package Compatibility: 24-pin TSSOP or TFSOP surface mount packages with 0.173" width and 4.40mm pitch
• Interrupt Capability: Interrupt output functionality
• Operating Temperature Range: -40°C to 85°C minimum
• Moisture Sensitivity: MSL 1 (Unlimited) preferred for manufacturing compatibility
• Compliance: RoHS3 compliance required

The two substitute parts identified—PCF8575PWR and XRA1201IG24TR-F—meet these core functional and physical requirements, though with variations in supply voltage range and output configuration.

Parameter Comparison

Engineering Selection Recommendations

PCF8575PWR is the primary substitute for PCF8575CDGVR. Both parts are manufactured by Texas Instruments, share the same base product number (PCF8575), and maintain identical I/O count, interface protocol, and clock frequency specifications. PCF8575PWR is currently in active production status with significantly higher inventory availability (19,400 units in stock versus 947 units for the main part). The supply voltage range of PCF8575PWR (2.5V ~ 5.5V) encompasses the original part's 4.5V ~ 5.5V requirement. The primary design consideration is the output type difference: PCF8575PWR uses push-pull output versus the open drain configuration of PCF8575CDGVR, which may require circuit topology evaluation. Both parts maintain ROHS3 compliance and MSL 1 rating.

XRA1201IG24TR-F is an alternative substitute manufactured by MaxLinear, Inc. This part maintains the 16-bit I/O count, I2C/SMBus interface at 400 kHz, and identical operating temperature range. XRA1201IG24TR-F is also in active production status with 3,618 units in stock. The critical design constraint is the supply voltage range of 1.65V ~ 3.6V, which does not overlap with the original part's 4.5V ~ 5.5V specification. This part is suitable only for designs operating at lower voltage levels. RoHS compliance is confirmed, and MSL 1 rating is maintained.

Frequently Asked Questions (FAQ)

Q: Can PCF8575PWR be used as a direct replacement for PCF8575CDGVR in existing designs?

A: PCF8575PWR is functionally compatible for I/O expansion applications requiring 16-bit I2C/SMBus interface at 400 kHz. The primary design consideration is the output configuration change from open drain to push-pull. Existing pull-up resistor networks and load impedance calculations must be re-evaluated for the new output type. Both parts operate within overlapping supply voltage ranges (2.5V ~ 5.5V for PCF8575PWR covers the 4.5V ~ 5.5V requirement of PCF8575CDGVR).

Q: What are the package differences between PCF8575CDGVR and its substitutes?

A: PCF8575CDGVR uses a 24-TFSOP package, while both PCF8575PWR and XRA1201IG24TR-F use 24-TSSOP packages. Both package types are 0.173" width with 4.40mm pitch and are surface mount compatible. TFSOP and TSSOP packages have identical pin pitch and footprint compatibility, allowing PCB layout reuse without modification.

Q: Is XRA1201IG24TR-F suitable for designs currently using PCF8575CDGVR?

A: XRA1201IG24TR-F is not suitable for direct substitution in designs operating at 4.5V ~ 5.5V supply voltage. The XRA1201IG24TR-F supply voltage range of 1.65V ~ 3.6V does not overlap with the original part's specification. This part is applicable only for new designs or redesigns operating at lower voltage levels.

Q: Are all substitute parts RoHS compliant?

A: Yes. PCF8575PWR maintains ROHS3 compliance identical to the main part. XRA1201IG24TR-F is RoHS compliant. Both substitutes meet environmental compliance requirements for current manufacturing standards.

Q: What is the inventory status for substitute parts?

A: PCF8575PWR has 19,400 units in stock (new original), providing substantial availability for production requirements. XRA1201IG24TR-F has 3,618 units in stock (new original). Both parts are in active production status, ensuring long-term supply continuity compared to the obsolete PCF8575CDGVR.