TC1271ASCVCTTR Equivalent & Substitute Parts

Part Overview

The TC1271ASCVCTTR is a single-channel power supply supervisor IC manufactured by Microchip Technology, designed for reset and power-on reset applications. This device features push-pull, totem pole output configuration and operates across the industrial temperature range of -40°C to 125°C. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. Substitute parts must maintain electrical compatibility across voltage monitoring, reset timing, and output characteristics while meeting current product availability and compliance requirements.

Substiute Parts

TC1271ASCVCTTR

Microchip TechnologyIn Stock: 1174TC1271ASCVCTTR Datasheet

Current PartRFQ

TC1271ASVCTTR

Microchip TechnologyIn Stock: 1013TC1271ASVCTTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC1271ASCVCTTR is determined by the following critical electrical and mechanical parameters:

• Single-channel voltage monitoring with 2.93V threshold
• Push-pull, totem pole output configuration
• Active high reset logic
• SOT-23-5 package (SC-74A, SOT-753 case)
• Surface mount technology
• Operating temperature range of -40°C to 125°C
• RoHS3 compliance and REACH unaffected status

The TC1271ASVCTTR qualifies as a direct substitute based on matching all electrical parameters and package specifications. The primary distinction is the reset timeout specification (140ms minimum versus 17.5ms minimum) and product status transition from obsolete to active, with packaging format change from loose to tape & reel.

Parameter Comparison

Engineering Selection Recommendations

The TC1271ASVCTTR is the manufacturer-recommended substitute for the obsolete TC1271ASCVCTTR. Both devices share identical electrical specifications for voltage threshold, output configuration, reset logic, and operating temperature range. The transition from obsolete to active product status ensures long-term availability and supply chain continuity.

The reset timeout difference (140ms versus 17.5ms) must be evaluated against system requirements. Applications requiring the shorter 17.5ms timeout should confirm that the extended 140ms timeout does not impact system performance or reset sequencing.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications. The tape & reel packaging of the substitute part aligns with standard manufacturing and assembly practices for high-volume production.

Frequently Asked Questions (FAQ)

Q: Can TC1271ASVCTTR directly replace TC1271ASCVCTTR in existing designs?

A: Yes, the TC1271ASVCTTR is electrically and mechanically compatible. The primary consideration is the reset timeout specification: TC1271ASVCTTR provides 140ms minimum versus 17.5ms minimum for the original part. Confirm that your application tolerates the extended timeout.

Q: What is the significance of the packaging format change from loose to tape & reel?

A: Tape & reel packaging is standard for automated assembly and high-volume manufacturing. This format improves handling efficiency and reduces component damage during production. For manual assembly or low-volume applications, tape & reel components can be manually extracted without functional impact.

Q: Are there compliance differences between the main part and substitute?

A: No. Both TC1271ASCVCTTR and TC1271ASVCTTR maintain identical ROHS3 compliance and REACH unaffected status. Moisture sensitivity level (MSL 1, Unlimited) is also identical, eliminating storage and handling requirement changes.

Q: Why is the original part classified as obsolete?

A: Microchip Technology has transitioned the TC1271ASCVCTTR to obsolete status. The TC1271ASVCTTR represents the active product line continuation with identical electrical performance and improved supply availability.

Q: Does the SOT-23-5 package remain unchanged?

A: Yes. Both parts use the identical SC-74A, SOT-753 case and SOT-23-5 supplier device package. PCB footprints and assembly processes require no modification.

Q: What applications are affected by the reset timeout difference?

A: Applications with critical reset sequencing requirements or those requiring rapid system restart cycles should evaluate the 140ms timeout against their specifications. Standard power-on reset and watchdog applications typically accommodate this timing without functional impact.