DS1705ESA Equivalent & Substitute Parts

Part Overview

The DS1705ESA is a supervisor integrated circuit from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) device. This single-channel reset supervisor operates as a push-pull, totem pole output device with active-low reset functionality. The DS1705ESA is currently listed as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and component procurement.

Substiute Parts

DS1705ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 5049DS1705ESA Datasheet

Current PartRFQ

DS1705ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1273DS1705ESA+ Datasheet

DirectRFQ

ADM705ARZ

Analog Devices Inc.In Stock: 21145ADM705ARZ Datasheet

MFR RecommendedRFQ

ADM705ARZ-REEL

Analog Devices Inc.In Stock: 15407ADM705ARZ-REEL Datasheet

MFR RecommendedRFQ

ADM705ARZ-REEL7

Analog Devices Inc.In Stock: 28995ADM705ARZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1705ESA is determined by strict equivalence across the following critical parameters:

• Functional Type: Single-channel supervisor with push-pull, totem pole output and active-low reset
• Voltage Threshold: 4.65V monitoring threshold
• Package: 8-SOIC surface mount form factor
• Operating Temperature: -40°C to 85°C range
• Reset Timeout: Minimum 130ms (allows for equal or greater values)
• Output Configuration: Push-pull, totem pole topology

The substitute parts identified maintain electrical and mechanical compatibility across these parameters. Variations in product status, RoHS compliance, and packaging format (tube versus cut tape/reel) do not affect functional interchangeability in circuit operation.

Parameter Comparison

Engineering Selection Recommendations

DS1705ESA+ (Direct Successor)

The DS1705ESA+ is the direct replacement for the obsolete DS1705ESA. This part maintains identical electrical specifications including the 130ms minimum reset timeout and 4.65V threshold voltage. The primary distinction is product status: DS1705ESA+ is active and ROHS3 compliant, addressing regulatory requirements for new designs. This part is recommended as the primary substitute when component availability and compliance requirements align.

ADM705ARZ, ADM705ARZ-REEL, ADM705ARZ-REEL7 (Functional Equivalents)

The ADM705 series represents functionally equivalent alternatives from Analog Devices Inc. These parts maintain all critical electrical parameters: single-channel monitoring, 4.65V threshold, push-pull totem pole output, active-low reset, and identical 8-SOIC package. The ADM705 series specifies a 160ms minimum reset timeout, which exceeds the DS1705ESA requirement of 130ms minimum and remains compatible with circuit timing requirements.

All ADM705 variants are active products with ROHS3 compliance. Selection among ADM705ARZ, ADM705ARZ-REEL, and ADM705ARZ-REEL7 depends on procurement packaging requirements: tube format versus cut tape with reel options.

Frequently Asked Questions (FAQ)

Q: Can DS1705ESA+ be used as a direct replacement for DS1705ESA?

A: Yes. DS1705ESA+ maintains identical electrical specifications and 8-SOIC package configuration. The primary differences are product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant). Electrical performance in circuit operation is equivalent.

Q: What is the difference between DS1705ESA+ and ADM705ARZ?

A: Both are functionally equivalent supervisors with identical voltage thresholds, output configurations, and package types. The ADM705ARZ specifies a 160ms minimum reset timeout compared to 130ms for DS1705ESA+. This difference does not affect substitution compatibility; the longer timeout is acceptable in applications designed for the shorter specification. Both are active, ROHS3-compliant products.

Q: Are ADM705ARZ, ADM705ARZ-REEL, and ADM705ARZ-REEL7 electrically identical?

A: Yes. These three part numbers represent the same integrated circuit in different packaging formats. ADM705ARZ is supplied in tube packaging. ADM705ARZ-REEL and ADM705ARZ-REEL7 are supplied on cut tape with Digi-Reel options. Electrical specifications and circuit performance are identical across all three variants.

Q: Does the 160ms reset timeout of ADM705ARZ create compatibility issues with designs using DS1705ESA?

A: No. The ADM705ARZ reset timeout of 160ms exceeds the DS1705ESA minimum of 130ms. Designs specified for 130ms minimum timeout remain compatible with the longer 160ms specification. The supervisor will hold reset for a longer duration, which does not create functional conflicts in standard power-on reset applications.

Q: What packaging options are available for these supervisor ICs?

A: All substitute parts use the 8-SOIC surface mount package (0.154" width, 3.90mm). Packaging format variations (tube, cut tape, reel) affect procurement and handling but do not alter electrical or mechanical compatibility. Selection should be based on assembly line requirements and inventory management practices.

Q: Are there RoHS compliance considerations for substitute selection?

A: The DS1705ESA is RoHS non-compliant. All substitute parts (DS1705ESA+, ADM705ARZ, ADM705ARZ-REEL, ADM705ARZ-REEL7) are ROHS3 compliant. For new designs or applications subject to RoHS regulations, any of the substitute parts satisfy compliance requirements. For legacy systems, RoHS status should be evaluated against applicable regulatory requirements.