TL7770-12CDWR Equivalent & Substitute Parts

Part Overview

The TL7770-12CDWR is a multi-voltage supervisor IC manufactured by Texas Instruments, designed for power management applications requiring dual-channel voltage monitoring. This device operates as an open drain or open collector supervisor with active high/active low reset capability and a 270ns typical propagation delay. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Substiute Parts

TL7770-12CDWR

Texas InstrumentsIn Stock: 2290TL7770-12CDWR Datasheet

Current PartRFQ

TPS3760A012DYYR

Texas InstrumentsIn Stock: 5508TPS3760A012DYYR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL7770-12CDWR is determined by the following critical parameters:

• Functional Type: Multi-channel voltage supervisor with open drain/open collector output
• Channel Configuration: Dual-channel monitoring capability
• Voltage Threshold Range: 12V adjustable threshold
• Output Architecture: Open drain or open collector topology
• Reset Behavior: Active high/active low reset modes
• Package Compatibility: Surface mount form factor
• Compliance Requirements: ROHS3 compliance and MSL rating

The TPS3760A012DYYR is identified as a manufacturer-recommended substitute. However, this part operates as a single-channel supervisor with a fixed 0.8V threshold, representing a functional departure from the dual-channel, 12V adjustable architecture of the TL7770-12CDWR. Substitution is applicable only in applications where single-channel monitoring at lower voltage thresholds is acceptable and where the reduced channel count does not compromise system requirements.

Parameter Comparison

Engineering Selection Recommendations

The TL7770-12CDWR is in Last Time Buy status, requiring design migration to active components. The TPS3760A012DYYR is the manufacturer-recommended substitute and maintains active product status with extended operating temperature range (-40°C to 125°C versus 0°C to 70°C). Both parts are ROHS3 compliant with MSL rating 1, ensuring equivalent environmental and regulatory compliance.

Selection of the TPS3760A012DYYR requires verification that application requirements accommodate single-channel monitoring and fixed 0.8V threshold operation. The package transition from 16-SOIC to 14-SOT-23-THIN necessitates PCB layout modification. The extended temperature range of the substitute provides broader operational capability for temperature-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the TPS3760A012DYYR directly replace the TL7770-12CDWR without design changes?

A: Direct replacement is not possible without design modifications. The TPS3760A012DYYR operates as a single-channel supervisor with fixed 0.8V threshold, whereas the TL7770-12CDWR provides dual-channel monitoring with 12V adjustable threshold. Package geometry differs (14-SOT-23-THIN versus 16-SOIC), requiring PCB layout revision. Application requirements must be evaluated to determine functional compatibility.

Q: What are the key functional differences between these parts?

A: The TL7770-12CDWR monitors two voltage channels with adjustable 12V threshold and supports both active high and active low reset modes. The TPS3760A012DYYR monitors a single voltage channel with fixed 0.8V threshold and active low reset only. Reset propagation delay differs significantly (270ns typical versus 100µs maximum).

Q: Are both parts compliant with current environmental and regulatory standards?

A: Both parts are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level). Both carry REACH Unaffected status and EAR99 ECCN classification, ensuring equivalent regulatory compliance for new designs.

Q: What is the impact of package change from 16-SOIC to 14-SOT-23-THIN?

A: Package transition requires PCB layout redesign, including trace routing, via placement, and thermal management considerations. The SOT-23-THIN package is significantly smaller, potentially reducing board space but requiring careful signal integrity management for reset and output signals.

Q: Does the extended operating temperature range of the TPS3760A012DYYR provide advantages?

A: The TPS3760A012DYYR operates from -40°C to 125°C (junction temperature) compared to 0°C to 70°C (ambient temperature) for the TL7770-12CDWR. Extended range provides design flexibility for applications requiring operation in extreme temperature environments, though this advantage is only realized if application requirements align with single-channel, fixed-threshold operation.