DS1834S Equivalent & Substitute Parts

Part Overview

The DS1834S is a multi-voltage supervisor IC from Analog Devices Inc./Maxim Integrated, part of the EconoReset series. This device monitors two voltage channels with thresholds at 3.3V and 5V, providing active-low reset output via open-drain or open-collector configuration. The DS1834S is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

DS1834S

Analog Devices Inc./Maxim IntegratedIn Stock: 2123DS1834S Datasheet

Current PartRFQ

DS1834S+

Analog Devices Inc./Maxim IntegratedIn Stock: 2019DS1834S+ Datasheet

DirectRFQ

DS1834AS+

Analog Devices Inc./Maxim IntegratedIn Stock: 1710DS1834AS+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DS1834S is determined by the following critical parameters:

• Voltage Monitoring Capability: Both substitute parts maintain 2-channel monitoring with identical 3.3V and 5V thresholds
• Package Compatibility: All parts use 8-SOIC surface-mount packaging with identical physical dimensions
• Reset Characteristics: Active-low reset with 200ms minimum timeout is preserved across all variants
• Operating Temperature Range: All parts operate across -40°C to 85°C
• Output Configuration Variants: The DS1834S+ differs in output type (Push-Pull/Totem Pole vs. Open Drain/Open Collector), while the DS1834AS+ maintains the original open-drain configuration

The DS1834S+ and DS1834AS+ are direct functional equivalents from the same manufacturer and series, with the primary distinction being output stage topology and product status (active vs. obsolete).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Output Configuration): The DS1834AS+ is the primary substitute for the DS1834S. Both devices feature open-drain or open-collector output configuration, ensuring pin-compatible operation in existing circuit designs. The DS1834AS+ is currently in active production status and meets ROHS3 compliance requirements, addressing regulatory requirements that the obsolete DS1834S does not satisfy.

For Alternative Output Configuration: The DS1834S+ provides equivalent voltage monitoring and reset functionality with push-pull/totem-pole output topology. This variant is suitable for applications where the output stage configuration change is compatible with the system design. The DS1834S+ is also in active production and ROHS3 compliant.

Compliance Considerations: Both substitute parts (DS1834S+ and DS1834AS+) are ROHS3 compliant, whereas the original DS1834S is RoHS non-compliant. This distinction is significant for applications subject to environmental and regulatory compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the DS1834S+ be used as a direct replacement for the DS1834S? A: The DS1834S+ is functionally equivalent in voltage monitoring and reset timing but differs in output configuration. The DS1834S uses open-drain or open-collector output, while the DS1834S+ uses push-pull/totem-pole output. Substitution is possible only if the circuit design accommodates the different output stage topology.

Q: Is the DS1834AS+ a pin-compatible substitute? A: Yes. The DS1834AS+ maintains identical package type (8-SOIC), pin configuration, voltage thresholds (3.3V, 5V), and output configuration (open-drain or open-collector) as the DS1834S. It is the recommended substitute for direct replacement in existing designs.

Q: What is the difference between the DS1834S+ and DS1834AS+? A: The primary difference is output stage topology. The DS1834S+ features push-pull/totem-pole output, while the DS1834AS+ retains the open-drain or open-collector configuration of the original DS1834S. Both are electrically equivalent in voltage monitoring and reset characteristics.

Q: Why is the DS1834S marked as obsolete? A: The DS1834S is classified as obsolete by the manufacturer. The active production variants (DS1834S+ and DS1834AS+) are the current recommended parts for new designs and ongoing system support.

Q: Are there any compliance differences between the substitute parts and the original? A: Yes. The DS1834S is RoHS non-compliant, while both DS1834S+ and DS1834AS+ are ROHS3 compliant. This is relevant for applications subject to environmental regulations or customer compliance requirements.

Q: Can these parts be used interchangeably in the same PCB assembly? A: The DS1834AS+ is directly interchangeable with the DS1834S due to identical package, pinout, and output configuration. The DS1834S+ requires circuit design verification due to its different output stage topology, though the 8-SOIC package remains identical.