TLC7705MJG Equivalent & Substitute Parts

Part Overview

The TLC7705MJG is a single-channel power supply supervisor with programmable threshold monitoring, manufactured by Texas Instruments. This through-hole mounted device operates across -55°C to 125°C and provides push-pull totem pole output for active high/active low reset control. The part is classified as Last Time Buy, indicating production discontinuation. Identifying equivalent and substitute components is necessary to ensure design continuity and maintain supply chain reliability for applications requiring power supervision functionality.

Substiute Parts

TLC7705MJG

Texas InstrumentsIn Stock: 901TLC7705MJG Datasheet

Current PartRFQ

TPS3760A012DYYR

Texas InstrumentsIn Stock: 5508TPS3760A012DYYR Datasheet

MFR RecommendedRFQ

TLC7705MJGB

Texas InstrumentsIn Stock: 1147TLC7705MJGB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TLC7705MJG is determined by the following critical parameters:

Parametric Equivalent Category: Parts matching all core electrical and mechanical specifications enable direct replacement without circuit modification. The TLC7705MJGB qualifies as a parametric equivalent, maintaining identical voltage threshold (4.55V), output configuration (push-pull totem pole), reset control (active high/active low), reset timeout (1.1ms minimum), operating temperature range (-55°C ~ 125°C), and package type (8-CDIP through-hole).

Functional Substitute Category: The TPS3760A012DYYR functions as a power supervisor but operates under different electrical parameters and physical constraints. This part monitors the same single voltage channel and provides reset functionality; however, it features open drain/open collector output (not push-pull), a lower voltage threshold (0.8V versus 4.55V), faster reset timeout (100µs maximum versus 1.1ms minimum), surface mount packaging (SOT-23-14 versus through-hole 8-CDIP), and a narrower operating temperature range (-40°C ~ 125°C versus -55°C ~ 125°C). Circuit redesign is required for this substitution.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The TLC7705MJGB is the recommended choice when supply of the TLC7705MJG becomes unavailable. This part maintains active product status with Texas Instruments and carries identical electrical specifications and through-hole 8-CDIP packaging. No circuit modifications are required. Both parts are ROHS3 compliant and REACH unaffected.

For Design Flexibility: The TPS3760A012DYYR provides an alternative when circuit redesign is acceptable. This part is actively manufactured and available in higher inventory quantities. Selection of this substitute requires accommodation of surface mount assembly processes, open drain output configuration, modified voltage threshold and reset timing parameters, and narrower operating temperature range. Applications operating below -40°C or requiring the original -55°C minimum temperature rating cannot use this substitute without thermal management modifications.

Frequently Asked Questions (FAQ)

Q: Can TLC7705MJGB replace TLC7705MJG without any modifications? A: Yes. The TLC7705MJGB is a parametric equivalent with identical voltage threshold (4.55V), output configuration (push-pull totem pole), reset control (active high/active low), reset timeout (1.1ms minimum), operating temperature range (-55°C ~ 125°C), and 8-CDIP through-hole package. Direct substitution is possible without circuit changes.

Q: What are the key differences between TLC7705MJG and TPS3760A012DYYR? A: The TPS3760A012DYYR differs in four critical areas: (1) output type is open drain/open collector instead of push-pull totem pole, requiring pull-up resistor configuration; (2) voltage threshold is 0.8V instead of 4.55V, necessitating threshold adjustment in the power supply design; (3) reset timeout is 100µs maximum instead of 1.1ms minimum, affecting system startup timing; (4) package is surface mount SOT-23-14 instead of through-hole 8-CDIP, requiring PCB redesign and assembly process changes.

Q: Is the TPS3760A012DYYR suitable for applications requiring -55°C operation? A: No. The TPS3760A012DYYR operates from -40°C to 125°C, which does not meet the -55°C minimum requirement of the original TLC7705MJG. Applications requiring extended low-temperature operation must use the TLC7705MJGB or equivalent parts with -55°C ratings.

Q: Are all three parts ROHS3 compliant? A: Yes. The TLC7705MJG, TLC7705MJGB, and TPS3760A012DYYR are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute part has better current availability? A: The TPS3760A012DYYR has higher inventory availability (5400 pieces) compared to TLC7705MJGB (1110 pieces). However, this substitute requires circuit redesign. The TLC7705MJGB remains the preferred choice for direct replacement when supply permits.