X9C104P Digital Potentiometer Equivalent & Substitute Parts

Part Overview

The X9C104P is a digital potentiometer manufactured by Renesas Electronics Corporation, featuring 100k Ohm resistance with 100 taps and Up/Down (U/D, INC, CS) interface control. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates on 5V supply with non-volatile memory, suitable for applications requiring programmable resistance adjustment in 8-PDIP through-hole packaging.

Substiute Parts

X9C104P

Renesas Electronics CorporationIn Stock: 1675X9C104P Datasheet

Current PartRFQ

DS1804-100+

Analog Devices Inc./Maxim IntegratedIn Stock: 3808DS1804-100+ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the X9C104P is determined by strict alignment across the following critical parameters:

• Resistance Value & Tap Configuration: Substitute must provide 100k Ohm with 100 taps to maintain circuit function
• Interface Protocol: Up/Down (U/D, INC, CS) control interface is mandatory for direct pin-level compatibility
• Memory Persistence: Non-volatile memory requirement ensures settings retention across power cycles
• Package Geometry: 8-DIP (0.300", 7.62mm) through-hole package enables direct PCB footprint compatibility
• Single Circuit Configuration: One potentiometer circuit per package

The DS1804-100+ meets all substitution criteria, providing functional and mechanical equivalence despite differences in supply voltage range, temperature coefficient, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: DS1804-100+

The DS1804-100+ from Analog Devices Inc./Maxim Integrated is the direct functional equivalent for X9C104P replacement. Selection rationale:

• Functional Equivalence: Identical resistance value, tap count, interface protocol, and package geometry ensure drop-in compatibility at the circuit level
• Active Product Status: DS1804-100+ is actively manufactured, providing long-term supply chain stability versus the obsolete X9C104P
• Compliance Advantage: ROHS3 compliance and REACH unaffected status align with current regulatory requirements
• Extended Operating Range: -40°C ~ 85°C operating temperature and 2.7V ~ 5.5V supply voltage provide broader application flexibility
• Design Considerations: Higher wiper resistance (400Ω vs 40Ω) and temperature coefficient (750ppm/°C vs 300ppm/°C) require circuit validation in precision applications

Frequently Asked Questions (FAQ)

Q: Can DS1804-100+ directly replace X9C104P without PCB modification?

A: Yes. Both components use identical 8-DIP (0.300", 7.62mm) through-hole packaging and Up/Down (U/D, INC, CS) interface pinout, enabling direct socket substitution. No PCB layout changes are required.

Q: What are the key electrical differences between these parts?

A: DS1804-100+ provides wider supply voltage range (2.7V ~ 5.5V vs 5V fixed), extended operating temperature (-40°C ~ 85°C vs 0°C ~ 70°C), higher wiper resistance (400Ω vs 40Ω), and higher temperature coefficient (750ppm/°C vs 300ppm/°C). Both maintain 100k Ohm resistance, 100 taps, and non-volatile memory.

Q: Is the higher wiper resistance of DS1804-100+ a concern?

A: Wiper resistance impact depends on circuit application. In high-impedance applications or precision analog circuits, the 10x difference (40Ω to 400Ω) may affect signal integrity or require circuit re-validation. Low-impedance applications typically show negligible impact.

Q: Does DS1804-100+ meet environmental compliance requirements?

A: Yes. DS1804-100+ is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. X9C104P is RoHS non-compliant.

Q: What is the supply availability difference?

A: X9C104P is obsolete with limited remaining inventory. DS1804-100+ is actively manufactured by Analog Devices Inc./Maxim Integrated, ensuring reliable long-term availability for production and support applications.

Q: Are there any interface or protocol differences?

A: No. Both components use identical Up/Down (U/D, INC, CS) control interface with non-volatile memory. Software and firmware control logic requires no modification.