DS1232SN/T&R Equivalent & Substitute Parts

Part Overview

The DS1232SN/T&R is a single-channel power supply supervisor IC manufactured by Analog Devices Inc./Maxim Integrated, designed for power management and reset signal generation in embedded systems. This component operates as a simple reset/power-on reset supervisor with open drain and push-pull output options. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional and electrical compatibility for ongoing system support and new designs.

Substiute Parts

DS1232SN/T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 969DS1232SN/T&R Datasheet

Current PartRFQ

DS1232SN+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 765DS1232SN+T&R Datasheet

DirectRFQ

DS1232LPSN+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 5488DS1232LPSN+T&R Datasheet

Parametric EquivalentRFQ

ADM1232ARWZ

Analog Devices Inc.In Stock: 3137ADM1232ARWZ Datasheet

MFR RecommendedRFQ

ADM1232ARWZ-REEL

Analog Devices Inc.In Stock: 2202ADM1232ARWZ-REEL Datasheet

MFR RecommendedRFQ

ADM1232ARWZ-REEL7

Analog Devices Inc.In Stock: 1979ADM1232ARWZ-REEL7 Datasheet

MFR RecommendedRFQ

TC1232COE

Microchip TechnologyIn Stock: 733TC1232COE Datasheet

MFR RecommendedRFQ

TC1232COE713

Microchip TechnologyIn Stock: 864TC1232COE713 Datasheet

MFR RecommendedRFQ

TC1232EOE

Microchip TechnologyIn Stock: 1130TC1232EOE Datasheet

MFR RecommendedRFQ

TC1232EOE713

Microchip TechnologyIn Stock: 709TC1232EOE713 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1232SN/T&R is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Package / Case: 16-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• Number of Voltages Monitored: 1 Channel
• Output Type: Open Drain, Push-Pull
• Reset Configuration: Active High/Active Low
• Operating Temperature Range: -40°C ~ 85°C (TA)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Voltage Threshold Compatibility: Substitutes are grouped into two categories based on voltage threshold specifications:

• Fixed Threshold (4.37V, 4.62V): DS1232SN+T&R, DS1232LPSN+T&R, TC1232COE, TC1232COE713, TC1232EOE, TC1232EOE713
• Adjustable/Selectable Threshold: ADM1232ARWZ, ADM1232ARWZ-REEL, ADM1232ARWZ-REEL7

Reset Timeout Specifications:

• Adjustable/Selectable: DS1232SN/T&R, DS1232SN+T&R, DS1232LPSN+T&R
• 250ms Minimum: ADM1232ARWZ, ADM1232ARWZ-REEL, ADM1232ARWZ-REEL7, TC1232COE, TC1232COE713, TC1232EOE, TC1232EOE713

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: DS1232LPSN+T&R

The DS1232LPSN+T&R is the preferred direct equivalent for DS1232SN/T&R replacement. This part maintains identical electrical specifications (4.37V, 4.62V fixed voltage thresholds, adjustable/selectable reset timeout) and operating temperature range (-40°C ~ 85°C). Both components are ROHS3 compliant with MSL 1 rating. The DS1232LPSN+T&R is in active product status with the highest inventory availability (5400 units), ensuring supply continuity. Tape & Reel packaging matches the original specification.

Secondary Recommendation: TC1232EOE or TC1232EOE713

The TC1232EOE and TC1232EOE713 (Microchip Technology) provide functional equivalence with identical voltage thresholds (4.37V, 4.62V) and extended operating temperature range (-40°C ~ 85°C). Both are active products with ROHS3 compliance and MSL 1 rating. The primary difference is reset timeout specification (250ms minimum versus adjustable/selectable), which may require circuit evaluation. TC1232EOE713 offers Tape & Reel packaging; TC1232EOE is supplied in Tube format.

Alternative Recommendation: ADM1232ARWZ Series

The ADM1232ARWZ, ADM1232ARWZ-REEL, and ADM1232ARWZ-REEL7 (Analog Devices Inc.) provide functional supervision with adjustable/selectable voltage thresholds and 250ms minimum reset timeout. These parts maintain the same package, operating temperature range, and compliance certifications. The adjustable threshold capability offers design flexibility for applications requiring non-standard voltage monitoring levels. ADM1232ARWZ-REEL7 and ADM1232ARWZ-REEL are available in Tape & Reel format.

Temperature-Constrained Applications: TC1232COE or TC1232COE713

For applications with operating temperature limits of 0°C ~ 70°C, TC1232COE (Tube) and TC1232COE713 (Tape & Reel) are suitable alternatives. These parts maintain fixed voltage thresholds (4.37V, 4.62V) and 250ms minimum reset timeout with ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can DS1232LPSN+T&R directly replace DS1232SN/T&R without circuit modification?

A: Yes. Both parts share identical electrical specifications: single-channel supervision, 4.37V and 4.62V voltage thresholds, adjustable/selectable reset timeout, open drain and push-pull output options, active high/active low reset configuration, and -40°C ~ 85°C operating temperature range. Both are packaged in 16-SOIC with identical pinout and functionality.

Q: What is the difference between fixed voltage threshold (4.37V, 4.62V) and adjustable/selectable threshold?

A: Fixed threshold parts (DS1232SN+T&R, DS1232LPSN+T&R, TC1232 series) monitor voltage at predetermined levels set during manufacturing. Adjustable/selectable threshold parts (ADM1232ARWZ series) allow threshold configuration through external components or programming, providing flexibility for non-standard voltage monitoring requirements.

Q: Why do some substitutes specify 250ms minimum reset timeout instead of adjustable/selectable?

A: Reset timeout defines the duration the reset output remains active after voltage stabilization. Fixed 250ms minimum timeout parts (ADM1232ARWZ series, TC1232 series) provide a guaranteed minimum hold time. Adjustable/selectable timeout parts (DS1232 series) allow circuit designers to configure this parameter based on system requirements. Both approaches are functionally valid; selection depends on application timing requirements.

Q: Are Microchip TC1232 parts fully compatible with Analog Devices DS1232 parts?

A: TC1232 parts provide functional equivalence in package, pinout, voltage thresholds, and output configuration. The primary difference is reset timeout specification (250ms minimum versus adjustable/selectable). Both manufacturers' parts are ROHS3 compliant with MSL 1 rating and identical operating temperature ranges for extended temperature variants (TC1232EOE/EOE713). Circuit evaluation is recommended to confirm reset timeout compatibility.

Q: What is the significance of packaging format (Tube vs. Tape & Reel)?

A: Tube packaging is suitable for manual assembly and low-volume applications. Tape & Reel packaging is designed for automated pick-and-place assembly and high-volume production. Electrical and functional specifications are identical; packaging selection depends on manufacturing process requirements.

Q: Can ADM1232ARWZ replace DS1232SN/T&R in existing designs?

A: ADM1232ARWZ provides functional supervision with identical package, pinout, and operating temperature range. The adjustable/selectable voltage threshold and 250ms minimum reset timeout differ from the original part's fixed thresholds and adjustable timeout. Circuit evaluation is required to confirm compatibility with existing reset timing and voltage monitoring requirements.

Q: Which substitute offers the best supply availability?

A: DS1232LPSN+T&R provides the highest inventory availability (5400 units) among all active equivalents, ensuring supply continuity for production and support applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original DS1232SN/T&R specifications.