Overview
The TL7705BID is a supply-voltage supervisor integrated circuit designed by Texas Instruments. It is primarily used as a reset controller in microcomputer systems. This device ensures that the microcontroller or microprocessor is reset if the supply voltage drops below a predefined threshold, thereby preventing malfunction or data corruption. The TL7705BID is characterized for operation over a wide temperature range from –40°C to 125°C, making it suitable for various industrial and automotive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits (ICs) - PMIC - Supervisors |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Type | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 |
| Output | Complementary |
| Reset | Active High/Active Low |
| Reset Timeout | 270 ns Typical Propagation Delay |
| Voltage - Threshold | 4.55V |
| Operating Temperature | –40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Supply Voltage Range | 3.6V to 18V |
Key Features
- Programmable Time Delay: The TL7705BID allows for programmable time delay using an external capacitor connected to the CT pin, enabling flexible reset timing.
- Active High/Active Low Reset: The device provides both active high and active low reset outputs, making it versatile for different system requirements.
- Open Collector Output: The reset output is open collector, requiring a pull-up resistor to ensure the correct high level for the microcontroller reset pin.
- Wide Operating Temperature Range: The device operates from –40°C to 125°C, making it suitable for a variety of applications including industrial and automotive systems.
- Low Power Consumption: The TL7705BID has a low current consumption, which is beneficial for power-sensitive applications.
Applications
The TL7705BID is widely used in various applications where reliable voltage monitoring and reset functionality are critical. These include:
- Microcomputer Systems: It is used to ensure that microcontrollers or microprocessors are reset properly when the supply voltage drops below a certain threshold.
- Industrial Control Systems: The device is suitable for industrial environments due to its wide operating temperature range and robust design.
- Automotive Systems: It is used in automotive electronics to monitor and manage power supply voltages, ensuring system reliability and stability.
- Embedded Systems: The TL7705BID is used in embedded systems to provide a reliable reset mechanism, preventing system malfunctions due to voltage fluctuations.
Q & A
- What is the primary function of the TL7705BID?
The primary function of the TL7705BID is to monitor the supply voltage and reset the microcontroller or microprocessor if the voltage drops below a predefined threshold.
- What is the threshold voltage for the TL7705BID?
The threshold voltage for the TL7705BID is 4.55V.
- What type of reset outputs does the TL7705BID provide?
The TL7705BID provides both active high and active low reset outputs.
- How is the time delay for the reset signal programmed in the TL7705BID?
The time delay for the reset signal is programmed using an external capacitor connected to the CT pin.
- What is the operating temperature range of the TL7705BID?
The operating temperature range of the TL7705BID is from –40°C to 125°C.
- What type of package is the TL7705BID available in?
The TL7705BID is available in an 8-SOIC package.
- Is the TL7705BID RoHS compliant?
- What is the supply voltage range for the TL7705BID?
The supply voltage range for the TL7705BID is from 3.6V to 18V.
- Why is a pull-up resistor required for the reset output of the TL7705BID?
A pull-up resistor is required because the reset output is open collector, ensuring the correct high level for the microcontroller reset pin.
- In what types of systems is the TL7705BID commonly used?
The TL7705BID is commonly used in microcomputer systems, industrial control systems, automotive systems, and embedded systems.
