DS1232 Equivalent & Substitute Parts

Part Overview

The DS1232 is a single-channel power supply supervisor IC from Analog Devices Inc./Maxim Integrated, designed for power-on reset and simple reset applications in embedded systems. This device monitors a single voltage rail and provides active high or active low reset outputs with adjustable or selectable timeout periods. The DS1232 is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing system support. Substitute parts must maintain functional compatibility across reset logic, voltage monitoring thresholds, output configurations, and package specifications.

Substiute Parts

DS1232

Analog Devices Inc./Maxim IntegratedIn Stock: 1578DS1232 Datasheet

Current PartRFQ

DS1232+

Analog Devices Inc./Maxim IntegratedIn Stock: 7750DS1232+ Datasheet

DirectRFQ

DS1232LP+

Analog Devices Inc./Maxim IntegratedIn Stock: 3333DS1232LP+ Datasheet

Parametric EquivalentRFQ

MIC1232NY

Microchip TechnologyIn Stock: 2326MIC1232NY Datasheet

MFR RecommendedRFQ

TC1232CPA

Microchip TechnologyIn Stock: 1665TC1232CPA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DS1232 are classified based on the following substitution criteria:

Direct Manufacturer Substitutes maintain identical electrical and mechanical specifications, including voltage thresholds (4.37V, 4.62V), output configuration (Open Drain, Push-Pull), reset logic (Active High/Active Low), and package form factor (8-DIP). These parts are pin-compatible and functionally equivalent with no design modifications required.

Parametric Equivalents share the same core electrical parameters—voltage thresholds, single-channel monitoring, reset type, and package—but may differ in product status or compliance certifications. These parts are suitable for applications where the obsolete status of the original part necessitates an active alternative.

Manufacturer-Recommended Alternatives from different manufacturers (Microchip Technology) provide equivalent functionality across voltage monitoring, reset logic, and package specifications. These parts may have minor variations in output configuration (Open Drain or Open Collector) or reset timeout behavior (fixed 250ms minimum versus adjustable/selectable), requiring verification against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required): DS1232+ and DS1232LP+ are the primary substitutes for the obsolete DS1232. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and maintain identical electrical specifications, including voltage thresholds, output configurations, reset logic, and timeout behavior. DS1232+ is available in higher inventory (7666 pcs) and is classified as active product status. DS1232LP+ offers the same functionality with 3271 pcs in stock. Both parts are ROHS3 compliant, addressing environmental compliance requirements that the original DS1232 does not meet.

For Cross-Manufacturer Substitution: MIC1232NY (Microchip Technology) and TC1232CPA (Microchip Technology) provide functional equivalence with the following considerations:

MIC1232NY operates across an extended temperature range (-40°C ~ 85°C) compared to the DS1232 (0°C ~ 70°C), making it suitable for industrial or automotive applications requiring broader thermal performance. However, MIC1232NY supports only Active Low reset logic, whereas the DS1232 supports both Active High and Active Low. Reset timeout is fixed at 250ms minimum rather than adjustable/selectable. Output configuration is specified as Open Drain or Open Collector.

TC1232CPA maintains the same operating temperature range as the DS1232 (0°C ~ 70°C) and supports both Active High and Active Low reset logic. Reset timeout is fixed at 250ms minimum. Output configuration is Open Drain or Open Collector. TC1232CPA is suitable for applications where Microchip Technology component qualification is required.

Compliance Considerations: All substitute parts except the original DS1232 are ROHS3 compliant. If RoHS non-compliance is a system requirement, the original DS1232 remains the only option; however, this is uncommon in modern applications. All parts maintain REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can DS1232+ be used as a direct replacement for DS1232? A: Yes. DS1232+ is a direct substitute with identical electrical and mechanical specifications. No circuit modifications are required. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant).

Q: What is the difference between DS1232LP+ and DS1232+? A: Both parts are functionally equivalent with identical voltage thresholds, output configurations, reset logic, and timeout behavior. The "LP" designation indicates a lower-power variant, though the provided specifications do not differentiate power consumption. Both are suitable for direct replacement of the DS1232.

Q: Can MIC1232NY replace DS1232 in all applications? A: MIC1232NY is functionally compatible for most applications but has two limitations: it supports only Active Low reset logic (not Active High/Active Low), and reset timeout is fixed at 250ms minimum rather than adjustable/selectable. Verify that your application does not require Active High reset logic or adjustable timeout before substituting.

Q: What is the temperature operating range difference between MIC1232NY and DS1232? A: MIC1232NY operates from -40°C ~ 85°C, while DS1232 operates from 0°C ~ 70°C. MIC1232NY is suitable for extended-temperature applications, including industrial and automotive environments. If your application operates within 0°C ~ 70°C, both parts are equivalent in this parameter.

Q: Are all substitute parts available in the same 8-DIP package? A: Yes. All substitute parts (DS1232+, DS1232LP+, MIC1232NY, TC1232CPA) are packaged in 8-DIP (0.300", 7.62mm) form factor with 8-PDIP supplier device package designation. Pin compatibility is maintained across all substitutes.

Q: What is the difference between Open Drain and Open Drain or Open Collector output? A: DS1232, DS1232+, and DS1232LP+ specify Open Drain and Push-Pull output configuration. MIC1232NY and TC1232CPA specify Open Drain or Open Collector output. Open Drain and Open Collector are functionally similar pull-down output stages. Verify your circuit design supports the specified output configuration before substitution.

Q: Which substitute part has the highest inventory availability? A: DS1232+ has the highest inventory with 7666 pcs in stock, followed by DS1232LP+ with 3271 pcs. MIC1232NY has 2280 pcs, and TC1232CPA has 1639 pcs available.

Q: Are all substitute parts RoHS compliant? A: Yes. DS1232+, DS1232LP+, MIC1232NY, and TC1232CPA are all ROHS3 compliant. The original DS1232 is RoHS non-compliant. If RoHS compliance is required for your application, any of the substitute parts are suitable.