CAT1161WI30 Equivalent & Substitute Parts

Part Overview

The CAT1161WI30 is a supervisor integrated circuit designed for power management applications, specifically functioning as a simple reset/power-on reset controller. This device monitors a single voltage channel and provides open drain or open collector output for system reset control. The CAT1161WI30 is classified as obsolete, making identification of functionally equivalent active alternatives essential for new designs and production continuity.

Substiute Parts

CAT1161WI30

onsemiIn Stock: 787CAT1161WI30 Datasheet

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N84C161WD30TG

onsemiIn Stock: 1022N84C161WD30TG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The N84C161WD30TG qualifies as a direct substitute for the CAT1161WI30 based on the following critical parameters:

• Functional Type: Both devices are simple reset/power-on reset supervisors
• Voltage Monitoring: Single channel configuration with 3V threshold
• Output Configuration: Open drain or open collector output
• Reset Logic: Active High/Active Low capability
• Reset Timeout: 130ms minimum specification
• Operating Temperature: Identical range of -40°C ~ 85°C
• Package: Both use 8-SOIC (0.154", 3.90mm Width) surface mount package
• Moisture Sensitivity: MSL 1 (Unlimited) for both devices

The primary distinction is product status: the CAT1161WI30 is obsolete, while the N84C161WD30TG is active. The substitute maintains electrical and mechanical compatibility while offering continued availability.

Parameter Comparison

Engineering Selection Recommendations

The N84C161WD30TG is the appropriate selection for applications currently using or requiring the CAT1161WI30 supervisor function. The substitute part maintains full electrical and mechanical compatibility across all specified parameters. The N84C161WD30TG offers the advantage of active product status, ensuring continued availability and manufacturing support. The device is ROHS3 compliant, meeting current environmental and regulatory requirements. Both parts share identical functional specifications for voltage monitoring, reset timing, output configuration, and operating temperature range, supporting direct substitution in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the N84C161WD30TG replace the CAT1161WI30 in existing designs?

A: Yes. Both devices share identical electrical specifications including 3V voltage threshold, 130ms minimum reset timeout, open drain/open collector output, and -40°C to 85°C operating temperature range. The 8-SOIC package dimensions are identical, supporting direct PCB substitution.

Q: What is the primary reason for substitution?

A: The CAT1161WI30 is classified as obsolete. The N84C161WD30TG is an active product from the same manufacturer with identical functional specifications, ensuring continued component availability.

Q: Are there packaging differences between these parts?

A: The CAT1161WI30 packaging format is not specified in available documentation. The N84C161WD30TG is supplied in Tape & Reel (TR) format. Both use the same 8-SOIC physical package for PCB mounting.

Q: Do compliance certifications differ?

A: The N84C161WD30TG is ROHS3 compliant. Both parts maintain REACH Unaffected status. The substitute part meets current environmental compliance standards.

Q: Are the reset timeout specifications identical?

A: Yes. Both the CAT1161WI30 and N84C161WD30TG specify 130ms minimum reset timeout, ensuring equivalent system reset behavior.

Q: Can these parts be used interchangeably in production?

A: Yes. Electrical and mechanical parameters are identical. The N84C161WD30TG supports direct substitution for new production and design updates.