DS1232LPS Equivalent & Substitute Parts

Part Overview

The DS1232LPS is a supervisor integrated circuit from Analog Devices Inc./Maxim Integrated, classified as a Power Management PMIC. It functions as a simple reset/power-on reset supervisor with open drain and push-pull output capabilities, monitoring a single voltage channel. The DS1232LPS is currently listed as obsolete, with 4,651 units available in new original stock. Due to its obsolete status, identifying functionally equivalent and substitute parts is essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage Threshold	4.37V, 4.62V
Output Configuration	Open Drain, Push-Pull
Reset Logic	Active High/Active Low
Reset Timeout	Adjustable/Selectable
Operating Temperature	0°C ~ 70°C (TA)
Package Type	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the DS1232LPS is determined by strict alignment with the following critical parameters:

Single voltage channel monitoring capability
Voltage threshold settings of 4.37V and 4.62V
Output configuration supporting open drain and/or push-pull modes
Reset logic supporting both active high and active low states
Reset timeout adjustability or selectability
16-SOIC surface mount package format
Operating temperature range compatibility (minimum 0°C ~ 70°C)
Moisture sensitivity level MSL 1

Substitute parts are grouped into three categories:

Direct Manufacturer Variants (Analog Devices Inc./Maxim Integrated): DS1232LPS+, DS1232LPS+T&R, and DS1232S+ maintain identical electrical specifications and differ only in packaging format (tube or tape & reel) or product status (active vs. obsolete).

Parametric Equivalents (Microchip Technology): TC1232COE, TC1232COE713, and TC1232EOE provide functionally equivalent supervisor functionality with matching voltage thresholds, output configurations, and package formats. These parts are manufacturer-recommended alternatives from Microchip Technology.

Temperature Range Consideration: TC1232EOE operates across an extended temperature range (-40°C ~ 85°C), making it suitable for applications requiring broader thermal performance beyond the standard 0°C ~ 70°C specification.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Threshold	Output Configuration	Reset Logic	Operating Temperature	Package	RoHS Status	Inventory (Pcs)
DS1232LPS	Analog Devices Inc./Maxim Integrated	Obsolete	4.37V, 4.62V	Open Drain, Push-Pull	Active High/Active Low	0°C ~ 70°C	16-SOIC	RoHS non-compliant	4,651
DS1232LPS+	Analog Devices Inc./Maxim Integrated	Active	4.37V, 4.62V	Open Drain, Push-Pull	Active High/Active Low	0°C ~ 70°C	16-SOIC	ROHS3 Compliant	835
DS1232LPS+T&R	Analog Devices Inc./Maxim Integrated	Active	4.37V, 4.62V	Open Drain, Push-Pull	Active High/Active Low	0°C ~ 70°C	16-SOIC	ROHS3 Compliant	2,000
DS1232S+	Analog Devices Inc./Maxim Integrated	Active	4.37V, 4.62V	Open Drain, Push-Pull	Active High/Active Low	0°C ~ 70°C	16-SOIC	ROHS3 Compliant	1,492
TC1232COE	Microchip Technology	Active	4.37V, 4.62V	Open Drain or Open Collector	Active High/Active Low	0°C ~ 70°C	16-SOIC	ROHS3 Compliant	689
TC1232COE713	Microchip Technology	Active	4.37V, 4.62V	Open Drain or Open Collector	Active High/Active Low	0°C ~ 70°C	16-SOIC	ROHS3 Compliant	766
TC1232EOE	Microchip Technology	Active	4.37V, 4.62V	Open Drain or Open Collector	Active High/Active Low	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant	1,117

Engineering Selection Recommendations

For applications currently using the obsolete DS1232LPS, the following selection criteria apply:

Active Product Status Priority: DS1232LPS+, DS1232LPS+T&R, and DS1232S+ are active products from the original manufacturer and represent the primary substitution path. These parts maintain identical electrical specifications and package format, ensuring direct functional compatibility.

RoHS Compliance Requirement: If RoHS3 compliance is mandated, DS1232LPS+ (tube packaging), DS1232LPS+T&R (tape & reel packaging), or DS1232S+ (tube packaging) must be selected, as the original DS1232LPS is RoHS non-compliant.

Packaging Format Selection: DS1232LPS+T&R is recommended for high-volume automated assembly requiring tape & reel format. DS1232LPS+ and DS1232S+ are available in tube packaging for lower-volume or manual assembly processes.

Cross-Manufacturer Alternatives: TC1232COE, TC1232COE713, and TC1232EOE from Microchip Technology provide parametrically equivalent supervisor functionality with identical voltage thresholds and output configurations. These parts are suitable when supply chain diversification or extended availability is required.

Extended Temperature Range: TC1232EOE operates from -40°C to 85°C, providing thermal performance beyond the standard 0°C ~ 70°C range. This part is appropriate for applications requiring broader operating temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can DS1232LPS be directly replaced with DS1232LPS+?

A: Yes. DS1232LPS+ is the active product variant with identical electrical specifications, voltage thresholds (4.37V, 4.62V), output configuration (open drain, push-pull), and 16-SOIC package format. The primary difference is product status (active vs. obsolete) and RoHS3 compliance.

Q: What is the difference between DS1232LPS+, DS1232LPS+T&R, and DS1232S+?

A: All three parts share identical electrical specifications and package format. DS1232LPS+ and DS1232S+ are supplied in tube packaging, while DS1232LPS+T&R is supplied in tape & reel format for automated assembly. DS1232S+ uses a different base product number but maintains full parametric equivalence.

Q: Are Microchip TC1232 parts compatible with DS1232LPS?

A: TC1232COE, TC1232COE713, and TC1232EOE are parametrically equivalent to DS1232LPS. All three maintain identical voltage thresholds (4.37V, 4.62V), single-channel monitoring, active high/active low reset logic, and 16-SOIC package format. Output configuration differs slightly (open drain or open collector vs. open drain and push-pull), but this remains functionally compatible for most applications.

Q: Which substitute part should be selected for new designs?

A: DS1232LPS+ or DS1232LPS+T&R are recommended for new designs, as they are active products from the original manufacturer with RoHS3 compliance and identical specifications to the obsolete DS1232LPS.

Q: Does TC1232EOE offer any advantages over other substitutes?

A: TC1232EOE operates across an extended temperature range (-40°C ~ 85°C) compared to the standard 0°C ~ 70°C specification of DS1232LPS and other substitutes. This extended range is beneficial for applications requiring broader thermal performance.

Q: What packaging options are available for DS1232LPS substitutes?

A: DS1232LPS+ and DS1232S+ are available in tube packaging. DS1232LPS+T&R is supplied in tape & reel format. TC1232COE and TC1232EOE are available in tube packaging, while TC1232COE713 is supplied in tape & reel format. Selection depends on assembly process requirements and volume.

Q: Are all substitute parts RoHS3 compliant?

A: DS1232LPS+ (tube), DS1232LPS+T&R (tape & reel), DS1232S+ (tube), TC1232COE (tube), TC1232COE713 (tape & reel), and TC1232EOE (tube) are all RoHS3 compliant. The original DS1232LPS is RoHS non-compliant.

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