SP691AEN-L Equivalent & Substitute Parts

Part Overview

The SP691AEN-L is a single-channel power management supervisor IC manufactured by MaxLinear, Inc., designed for reset and power-on reset applications in 16-SOIC surface mount packaging. This part is classified as obsolete, making equivalent substitute components necessary for new designs and ongoing production requirements. The SP691AEN-L provides open drain and push-pull output configurations with active high/active low reset capability and a 140ms minimum reset timeout.

Key Parameters

Parameter	Value
Manufacturer Part Number	SP691AEN-L
Manufacturer	MaxLinear, Inc.
Category	Power Management (PMIC)
Product Status	Obsolete
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4.65V
Output	Open Drain, Push-Pull
Reset	Active High/Active Low
Reset Timeout	140ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution of the SP691AEN-L is determined by strict equivalence across the following critical parameters:

Single-channel voltage monitoring capability
4.65V voltage threshold
140ms minimum reset timeout
Active high/active low reset configuration
16-SOIC surface mount package (0.154", 3.90mm width)
Operating temperature range compatibility
Output type compatibility (open drain and/or push-pull)

Substitute parts are grouped into two functional categories based on output configuration:

Category A: Open Drain Output (Direct Equivalents) ADM691AARNZ, ADM691AARNZ-REEL, and ADM691AARNZ-REEL7 provide open drain output matching the SP691AEN-L configuration. These parts are manufactured by Analog Devices Inc. and maintain identical electrical specifications including the 4.65V threshold, 140ms reset timeout, and single-channel monitoring.

Category B: Push-Pull Output (Functional Equivalents) MAX691ACSE+, MAX691ACSE+T, MAX691AESE+, and MAX691AESE+T provide push-pull output configurations. These parts are manufactured by Analog Devices Inc./Maxim Integrated and maintain the same voltage threshold, reset timeout, and single-channel monitoring. Push-pull output is compatible with applications requiring higher drive capability compared to open drain configurations.

Parameter Comparison

Parameter	SP691AEN-L	ADM691AARNZ	ADM691AARNZ-REEL	ADM691AARNZ-REEL7	MAX691ACSE+	MAX691ACSE+T	MAX691AESE+	MAX691AESE+T
Manufacturer	MaxLinear, Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Type	Simple Reset/Power-On Reset	Battery Backup Circuit	Battery Backup Circuit	Battery Backup Circuit	Battery Backup Circuit	Battery Backup Circuit	Battery Backup Circuit	Battery Backup Circuit
Number of Voltages Monitored	1	1	1	1	1	1	1	1
Voltage - Threshold	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V	4.65V
Output	Open Drain, Push-Pull	Open Drain, Push-Pull	Open Drain, Push-Pull	Open Drain, Push-Pull	Push-Pull, Push-Pull	Push-Pull, Push-Pull	Push-Pull, Push-Pull	Push-Pull, Push-Pull
Reset	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low	Active High/Active Low
Reset Timeout	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For applications requiring direct functional equivalence with open drain output configuration, the ADM691AARNZ series (ADM691AARNZ, ADM691AARNZ-REEL, ADM691AARNZ-REEL7) from Analog Devices Inc. provides the closest match to the SP691AEN-L. All three variants maintain identical electrical specifications and differ only in packaging format (tube, tape & reel, or cut tape & Digi-Reel). These parts are active products with ROHS3 compliance and improved moisture sensitivity ratings (MSL 1 vs. MSL 2).

For applications where push-pull output is acceptable or preferred, the MAX691 series (MAX691ACSE+, MAX691ACSE+T, MAX691AESE+, MAX691AESE+T) provides equivalent functionality with higher output drive capability. Selection between MAX691ACSE+ variants and MAX691AESE+ variants depends on operating temperature requirements: MAX691ACSE+ variants operate from 0°C to 70°C, while MAX691AESE+ variants support the full -40°C to 85°C range matching the SP691AEN-L specification.

All substitute parts carry ROHS3 compliance and REACH unaffected status, supporting modern regulatory requirements. Packaging selection (tube, tape & reel, or cut tape & Digi-Reel) should align with production volume and assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can the ADM691AARNZ directly replace the SP691AEN-L in existing designs?

A: Yes. The ADM691AARNZ maintains identical electrical specifications including 4.65V threshold, 140ms reset timeout, single-channel monitoring, and open drain/push-pull output configuration. The 16-SOIC package dimensions are identical, enabling direct PCB substitution. The improved MSL rating (1 vs. 2) and active product status provide additional advantages for new production.

Q: What is the difference between ADM691AARNZ, ADM691AARNZ-REEL, and ADM691AARNZ-REEL7?

A: These three part numbers represent the same IC with different packaging formats. ADM691AARNZ is supplied in tube packaging, ADM691AARNZ-REEL in tape & reel format, and ADM691AARNZ-REEL7 in cut tape & Digi-Reel format. Electrical specifications are identical; selection depends on assembly process requirements and order quantities.

Q: Can MAX691 series parts replace the SP691AEN-L?

A: MAX691 series parts are functionally equivalent with one key difference: they provide push-pull output instead of open drain output. Push-pull output offers higher drive capability and is compatible with most applications designed for open drain. However, applications requiring true open drain behavior should use the ADM691AARNZ series instead.

Q: What is the operating temperature difference between MAX691ACSE+ and MAX691AESE+ variants?

A: MAX691ACSE+ variants operate from 0°C to 70°C, while MAX691AESE+ variants support -40°C to 85°C. For applications requiring the full extended temperature range of the SP691AEN-L, MAX691AESE+ variants are the appropriate selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification. The SP691AEN-L RoHS status was not specified in available documentation. All substitutes also carry REACH unaffected status.

Q: What is the MSL (Moisture Sensitivity Level) difference, and does it matter?

A: The SP691AEN-L carries MSL 2 (1 year shelf life), while all substitute parts carry MSL 1 (unlimited shelf life). MSL 1 provides superior moisture resistance and longer shelf life without special storage requirements, offering a practical advantage for inventory management and long-term storage.

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