DS1859B-050 Equivalent & Substitute Parts

Part Overview

The DS1859B-050 is a digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated, classified as a Data Acquisition component. This device features a 50kΩ resistance value with 256 taps, dual-circuit configuration, and I2C interface control. The main part number DS1859B-050 is currently listed as obsolete, making identification of equivalent substitute parts essential for ongoing system support and procurement planning.

Substiute Parts

DS1859B-050

Analog Devices Inc./Maxim IntegratedIn Stock: 3149DS1859B-050 Datasheet

Current PartRFQ

DS1859B-050+

Analog Devices Inc./Maxim IntegratedIn Stock: 4874DS1859B-050+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1859B-050 is determined by strict equivalence across the following critical parameters:

• Resistance value: 50kΩ
• Number of circuits: 2
• Number of taps: 256
• Interface protocol: I2C
• Memory type: Non-Volatile
• Supply voltage range: 2.85V ~ 5.5V
• Package type: 16-CSBGA (4x4)
• Operating temperature range: -40°C ~ 95°C
• Configuration: Rheostat
• Taper: Linear

The DS1859B-050+ meets all these criteria and qualifies as a direct substitute. The primary distinction between the main part and its substitute is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The DS1859B-050+ is the direct substitute for the obsolete DS1859B-050. Both parts share identical electrical and mechanical specifications, ensuring functional compatibility in existing circuit designs.

The DS1859B-050+ offers two significant advantages over the main part:

1. Active product status: The substitute is currently in active production, ensuring long-term availability and supply chain continuity.

2. Regulatory compliance: The DS1859B-050+ is ROHS3 compliant, whereas the main part is RoHS non-compliant. This compliance status is critical for applications subject to environmental regulations and industry standards.

For new designs or component refresh cycles, the DS1859B-050+ is the appropriate selection. For legacy system maintenance requiring exact part matching, the DS1859B-050 remains functionally equivalent, though procurement may be limited due to obsolescence.

Frequently Asked Questions (FAQ)

Q: Can DS1859B-050+ be used as a direct replacement for DS1859B-050?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including resistance value, circuit count, tap resolution, interface protocol, voltage range, package type, and operating temperature range.

Q: What is the difference between DS1859B-050 and DS1859B-050+?

A: The primary differences are product status and compliance certification. DS1859B-050 is obsolete and RoHS non-compliant. DS1859B-050+ is active production and ROHS3 compliant. The "+" designation indicates the newer variant with updated compliance status.

Q: Are there any package or pinout differences?

A: No. Both parts use the 16-CSBGA (4x4) package type with identical pinout and mechanical dimensions.

Q: Which part should be selected for new designs?

A: DS1859B-050+ should be selected for new designs due to active product status and regulatory compliance certification.

Q: Is the I2C interface identical between both parts?

A: Yes. Both parts implement I2C interface with selectable address functionality and identical protocol specifications.

Q: Are the supply voltage and operating temperature ranges the same?

A: Yes. Both parts operate across 2.85V to 5.5V supply voltage and -40°C to 95°C operating temperature range.