DS1868-10 Equivalent & Substitute Parts

Part Overview

The DS1868-10 is a digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated, configured as a 10kΩ dual-circuit device with 256 taps and serial interface control. This component is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The DS1868-10 operates across supply voltages of 2.7V to 3.3V and 5V, making it suitable for mixed-signal applications requiring programmable resistance adjustment.

Substiute Parts

DS1868-10

Analog Devices Inc./Maxim IntegratedIn Stock: 1030DS1868-10 Datasheet

Current PartRFQ

DS1868BE-010+

Analog Devices Inc./Maxim IntegratedIn Stock: 932DS1868BE-010+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1868-10 is determined by equivalence across the following critical parameters:

• Resistance value: 10kΩ (exact match required)
• Number of circuits: 2 (exact match required)
• Number of taps: 256 (exact match required)
• Interface: Serial (exact match required)
• Supply voltage compatibility: 2.7V ~ 3.3V and 5V operation (exact match required)
• Operating temperature range: -40°C ~ 85°C (exact match required)
• Taper characteristic: Linear (exact match required)

The DS1868BE-010+ qualifies as a direct functional equivalent, maintaining identical electrical specifications while differing in packaging format and mounting technology. This substitution is valid for applications where the physical form factor and mounting method can be accommodated.

Parameter Comparison

Engineering Selection Recommendations

The DS1868BE-010+ is the active equivalent for the obsolete DS1868-10. Selection between these parts is determined by PCB design constraints and manufacturing requirements:

DS1868-10 (Through Hole, 14-DIP): Applicable only to legacy designs or systems where through-hole mounting is mandated. This part is obsolete and subject to availability limitations.

DS1868BE-010+ (Surface Mount, 20-TSSOP): Recommended for new designs and production transitions. This part maintains active product status with full ROHS3 compliance, ensuring long-term supply chain viability and regulatory alignment. The surface-mount package reduces PCB footprint and supports modern manufacturing processes.

The electrical equivalence between these parts is complete. The primary selection criterion is the physical mounting requirement and compliance posture of the target application.

Frequently Asked Questions (FAQ)

Q: Can DS1868BE-010+ directly replace DS1868-10 in existing designs?

A: Electrical substitution is complete. Physical substitution requires PCB redesign due to package differences: DS1868-10 uses 14-DIP through-hole mounting, while DS1868BE-010+ uses 20-TSSOP surface-mount packaging. Footprint, pin assignment, and assembly process modifications are necessary.

Q: What is the difference in wiper resistance between these parts?

A: DS1868-10 specifies 400Ω typical wiper resistance, while DS1868BE-010+ specifies 900Ω typical wiper resistance. This difference may affect circuit performance in applications sensitive to wiper impedance. Verify compatibility with your specific application requirements.

Q: Why is DS1868-10 marked as obsolete?

A: Obsolescence reflects Analog Devices' product lifecycle management. The DS1868BE-010+ represents the active continuation of this product line with improved compliance status and modern packaging.

Q: Are there RoHS compliance implications for substitution?

A: DS1868-10 is RoHS non-compliant, while DS1868BE-010+ is ROHS3 compliant. Systems requiring RoHS certification must use DS1868BE-010+. Existing legacy systems using DS1868-10 may continue operation under grandfathering provisions depending on regional regulations.

Q: Do both parts support the same supply voltage range?

A: Yes. Both DS1868-10 and DS1868BE-010+ operate across 2.7V to 3.3V and 5V supply ranges with identical electrical performance across this range.