TL7770-5CDW Equivalent & Substitute Parts

Part Overview

The TL7770-5CDW is a multi-voltage supervisor IC from Texas Instruments designed for power management applications. This 2-channel supervisor monitors voltage levels and provides active high/active low reset outputs with open drain or open collector configuration. The device is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and transition to active product lines.

Substiute Parts

TL7770-5CDW

Texas InstrumentsIn Stock: 1152TL7770-5CDW Datasheet

Current PartRFQ

TPS3760A012DYYR

Texas InstrumentsIn Stock: 5508TPS3760A012DYYR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL7770-5CDW is determined by the following critical parameters:

• Functional Type: Supervisor IC with reset output capability
• Output Configuration: Open drain or open collector output
• Voltage Monitoring Capability: Number of channels and threshold voltage range
• Reset Characteristics: Active high/active low reset logic and propagation delay
• Package Compatibility: Surface mount form factor suitable for PCB integration
• Environmental Compliance: RoHS3 compliance and moisture sensitivity rating
• Operating Temperature Range: Functional temperature specifications

The TPS3760A012DYYR is identified as a manufacturer-recommended substitute. While it operates as a supervisor IC with open drain output and RoHS3 compliance, it differs in channel count (1 vs. 2), voltage threshold configuration (0.8V fixed vs. 5V adjustable), and package form factor (14-SOT-23-THIN vs. 16-SOIC). These differences require circuit-level evaluation for compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TL7770-5CDW is Last Time Buy status, requiring transition planning to active alternatives. The TPS3760A012DYYR is an active product from the same manufacturer with equivalent RoHS3 compliance and moisture sensitivity rating.

Selection between these parts depends on application requirements:

• Multi-channel monitoring requirement: The TL7770-5CDW monitors 2 voltage channels; the TPS3760A012DYYR monitors 1 channel. Applications requiring dual-channel supervision must evaluate whether single-channel operation is acceptable or if multiple TPS3760A012DYYR devices can be implemented.

• Voltage threshold specification: The TL7770-5CDW supports 5V adjustable thresholds; the TPS3760A012DYYR operates at 0.8V fixed threshold. Threshold compatibility must be verified against circuit design specifications.

• Reset logic configuration: The TL7770-5CDW supports both active high and active low reset; the TPS3760A012DYYR operates in active low mode only. Reset signal polarity requirements must align with downstream logic.

• Propagation delay: The TL7770-5CDW specifies 270ns typical propagation delay; the TPS3760A012DYYR specifies 100µs maximum. Timing-critical applications must evaluate this difference.

• Package footprint: The 16-SOIC package differs from the 14-SOT-23-THIN package. PCB layout modifications are required for physical substitution.

• Temperature range: The TPS3760A012DYYR supports -40°C to 125°C, extending the lower and upper operating limits compared to the TL7770-5CDW (0°C to 70°C).

Frequently Asked Questions (FAQ)

Q: Can the TPS3760A012DYYR directly replace the TL7770-5CDW on existing PCBs?

A: Direct PCB replacement is not possible due to package differences (16-SOIC vs. 14-SOT-23-THIN). Layout redesign is required. Additionally, functional differences in channel count, voltage threshold, and reset logic must be evaluated for circuit compatibility.

Q: What is the primary reason for finding a substitute for the TL7770-5CDW?

A: The TL7770-5CDW is classified as Last Time Buy, indicating the manufacturer is discontinuing production. The TPS3760A012DYYR is an active product suitable for new designs and long-term supply continuity.

Q: Are both parts RoHS3 compliant?

A: Yes, both the TL7770-5CDW and TPS3760A012DYYR are ROHS3 compliant with moisture sensitivity level 1 (unlimited).

Q: How do the reset characteristics differ between these parts?

A: The TL7770-5CDW provides 270ns typical propagation delay with configurable active high/active low reset logic. The TPS3760A012DYYR provides 100µs maximum propagation delay with active low reset only. Applications with timing-critical reset requirements must account for this difference.

Q: Can a single TPS3760A012DYYR replace dual-channel monitoring functionality?

A: The TPS3760A012DYYR monitors one voltage channel. Applications requiring dual-channel supervision must either implement multiple TPS3760A012DYYR devices or identify alternative multi-channel supervisor ICs.

Q: What are the voltage threshold differences?

A: The TL7770-5CDW supports 5V adjustable thresholds, allowing circuit-specific configuration. The TPS3760A012DYYR operates at 0.8V fixed threshold. Threshold compatibility with application requirements must be verified before substitution.