TL7705BID

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage and provides a reset signal when the voltage falls below a predetermined threshold - Ensures reliable operation of microcontrollers, microprocessors, and other digital devices - Prevents data corruption and system malfunction during power fluctuations or brownouts

Package: SOIC-8

Essence: The TL7705BID is a voltage supervisor IC that plays a crucial role in maintaining the stability and integrity of electronic systems by monitoring the power supply voltage.

Packaging/Quantity: The TL7705BID is typically sold in reels containing 250 units.

Specifications

• Supply Voltage Range: 2.7V to 18V
• Reset Threshold Voltage Options: 4.55V, 4.65V, 4.75V, 4.85V, 4.95V, 5.05V, 5.15V, 5.25V
• Low Quiescent Current: 35µA (typical)
• Open Drain Output
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TL7705BID features an 8-pin Small Outline Integrated Circuit (SOIC) package with the following pin configuration:

1. GND (Ground)
2. VCC (Supply Voltage)
3. RESET (Reset Output)
4. TH (Threshold Input)
5. TH (Threshold Input)
6. TH (Threshold Input)
7. TH (Threshold Input)
8. NC (No Connection)

Functional Features

1. Voltage Monitoring: The TL7705BID continuously monitors the power supply voltage.
2. Reset Signal Generation: When the voltage falls below the preset threshold, the TL7705BID generates a reset signal.
3. Adjustable Threshold: The threshold voltage can be set using external resistors, allowing flexibility in system design.
4. Open Drain Output: The reset output is an open drain, enabling easy interfacing with other devices.
5. Low Power Consumption: The TL7705BID operates with low quiescent current, minimizing power consumption.

Advantages and Disadvantages

Advantages: - Ensures reliable operation of digital devices during power fluctuations - Prevents data corruption and system malfunction - Adjustable threshold for flexibility in system design - Low power consumption

Disadvantages: - Limited to monitoring voltage levels within the specified range - Requires external resistors for threshold adjustment

Working Principles

The TL7705BID works by comparing the supply voltage with a preset threshold voltage. When the supply voltage falls below the threshold, the internal circuitry triggers the reset output, signaling a system reset. This ensures that the connected microcontrollers or digital devices start from a known state, preventing data corruption or erratic behavior caused by unstable power supply conditions.

Application Field Plans

The TL7705BID finds applications in various fields where stable power supply monitoring is critical. Some common application areas include: - Industrial automation systems - Automotive electronics - Medical equipment - Consumer electronics - Communication systems

Alternative Models

1. TL7702BID: Similar functionality but with a different pin configuration (SOIC-14 package).
2. TL7700BID: Voltage supervisor IC with fixed threshold voltage options (SOIC-8 package).
3. MAX823LEUK+: Voltage supervisor IC with adjustable threshold voltage (SOT-23-5 package).

These alternative models offer similar voltage monitoring and reset functionalities, providing options for different system requirements.

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