DS1834AU/T&R Equivalent & Substitute Parts

Part Overview

The DS1834AU/T&R is a multi-voltage supervisor IC from Analog Devices Inc./Maxim Integrated's EconoReset series, designed for power management applications requiring dual-channel voltage monitoring. This component monitors two voltage thresholds (3.3V and 5V) and provides active-low reset output via open drain or open collector configuration. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

DS1834AU/T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 1195DS1834AU/T&R Datasheet

Current PartRFQ

DS1834AU+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 2780DS1834AU+T&R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DS1834AU/T&R is determined by strict alignment across the following critical parameters:

• Functional Type: Multi-voltage supervisor with dual-channel monitoring capability
• Voltage Monitoring Thresholds: 3.3V and 5V detection
• Output Type: Open drain or open collector configuration
• Reset Behavior: Active-low reset signal with 200ms minimum timeout
• Operating Temperature Range: -40°C to 85°C
• Package Specification: 8-TSSOP/8-MSOP form factor with 0.118" (3.00mm) width
• Electrical Interface: Surface mount configuration compatible with 8-uMAX/uSOP pinout

The DS1834AU+T&R qualifies as a direct substitute based on identical functional specifications, electrical parameters, and mechanical compatibility. The primary distinction is packaging format (tape and reel versus bulk) and product status (active versus obsolete).

Parameter Comparison

Engineering Selection Recommendations

The DS1834AU+T&R serves as the direct functional equivalent for the obsolete DS1834AU/T&R. Selection between these parts should be based on the following criteria:

Product Status Consideration: The DS1834AU+T&R maintains active product status with ongoing manufacturer support, whereas the DS1834AU/T&R is classified as obsolete. For new designs or long-term system support, the active substitute is the appropriate choice.

Compliance and Certification: The DS1834AU+T&R achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. Systems requiring RoHS compliance must transition to the substitute part. Both parts maintain REACH unaffected status and EAR99 export classification.

Packaging and Supply Chain: The DS1834AU+T&R is supplied in tape and reel format, which is standard for automated assembly processes. The original part's bulk packaging may present procurement challenges due to obsolescence. Current inventory availability favors the substitute (2694 pcs versus 1142 pcs for the original).

Electrical and Mechanical Compatibility: Both parts are electrically and mechanically identical across all monitored parameters, including voltage thresholds, output configuration, reset timing, temperature range, and package dimensions. Direct PCB-level substitution is supported without design modification.

Frequently Asked Questions (FAQ)

Q: Can DS1834AU+T&R be used as a direct replacement for DS1834AU/T&R in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters including voltage monitoring thresholds, output type, reset behavior, operating temperature range, and package specification. No circuit design changes are required.

Q: What is the difference between DS1834AU/T&R and DS1834AU+T&R?

A: The primary differences are product status (obsolete versus active), RoHS compliance (non-compliant versus ROHS3 compliant), and packaging format (bulk versus tape and reel). Electrical and mechanical specifications are identical.

Q: Does the tape and reel packaging of DS1834AU+T&R affect compatibility?

A: No. Tape and reel packaging is a supply format that does not affect component electrical performance or PCB-level compatibility. The physical component and pinout remain identical.

Q: Are there any temperature or voltage rating differences between these parts?

A: No. Both parts operate across the identical temperature range (-40°C to 85°C) and monitor the same voltage thresholds (3.3V and 5V).

Q: Which part should be specified for new designs?

A: DS1834AU+T&R should be specified for new designs due to active product status, ROHS3 compliance, and ongoing manufacturer support. The original part's obsolete status makes it unsuitable for long-term system deployment.

Q: Is the 8-uMAX/uSOP package compatible with standard 8-TSSOP/8-MSOP footprints?

A: Yes. The 8-uMAX/uSOP designation refers to the supplier device package, which is mechanically and electrically compatible with 8-TSSOP and 8-MSOP footprints at 0.118" (3.00mm) width.