DAC8426FS Equivalent & Substitute Parts

Part Overview

The DAC8426FS is an 8-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc., designed for data acquisition applications requiring four independent voltage output channels. The device features an internal reference, parallel data interface, and R-2R architecture with buffered voltage outputs. The DAC8426FS is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

DAC8426FS

Analog Devices Inc.In Stock: 1400DAC8426FS Datasheet

Current PartRFQ

DAC8426FSZ

Analog Devices Inc.In Stock: 1131DAC8426FSZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC8426FS is determined by strict equivalence across the following critical parameters:

• Resolution: 8-bit conversion
• Channel count: 4 independent D/A converters
• Output configuration: Voltage output with buffering
• Interface protocol: Parallel data input
• Reference source: Internal reference
• Supply voltage range: 14.6V ~ 16.5V (both analog and digital supplies)
• Accuracy specifications: INL/DNL ±1 LSB (Max)
• Settling time: 3µs (Typ)
• Package form factor: 20-SOIC surface mount
• Temperature range: -40°C ~ 85°C

The DAC8426FSZ qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility across all parameters listed above.

Parameter Comparison

Engineering Selection Recommendations

The DAC8426FSZ is the direct substitute for the obsolete DAC8426FS. Both devices share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility. The DAC8426FSZ carries Active product status, providing long-term availability and supply chain continuity. The substitute part meets ROHS3 compliance and REACH unaffected status, satisfying modern regulatory requirements for component procurement. Selection of the DAC8426FSZ eliminates obsolescence risk while maintaining full functional equivalence in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the DAC8426FSZ be used as a direct replacement for the DAC8426FS?

A: Yes. The DAC8426FSZ is electrically and mechanically identical to the DAC8426FS across all specified parameters, including resolution, channel count, output type, supply voltage, accuracy, settling time, and package form factor. No circuit modifications are required.

Q: What is the primary reason to substitute the DAC8426FS?

A: The DAC8426FS is classified as obsolete. The DAC8426FSZ is an active product from the same manufacturer with identical specifications, ensuring continued availability and supply chain support.

Q: Are there any differences in compliance or certification between these parts?

A: The DAC8426FSZ is ROHS3 compliant and REACH unaffected. Compliance status for the DAC8426FS is not specified in available documentation. Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: Is the 20-SOIC package identical between both parts?

A: Yes. Both the DAC8426FS and DAC8426FSZ use the 20-SOIC package with 0.295" (7.50mm) width. Footprint and mounting requirements are identical for surface mount assembly.

Q: What are the critical electrical parameters that define substitution compatibility?

A: Substitution is based on 8-bit resolution, 4-channel configuration, buffered voltage output, parallel interface, internal reference, 14.6V ~ 16.5V supply range, ±1 LSB accuracy, 3µs settling time, and -40°C ~ 85°C operating temperature. All parameters are identical between the two parts.