Overview
The TPS3307-33DR, produced by Texas Instruments, is a micropower supply voltage supervisor designed primarily for circuit initialization in DSP and processor-based systems. This device is part of the TPS3307 family, which monitors multiple independent supply voltages to ensure proper system operation. The TPS3307-33DR is particularly suited for systems requiring more than one supply voltage, such as 3.3V, 1.8V, and adjustable voltages.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC-8, MSOP-8 |
| Pins | 8 |
| Operating Temperature Range | -40°C to +85°C |
| Supply Voltage Range | 2V to 6V |
| Maximum Supply Current | 40µA |
| Reset Delay Time | 200ms (typical) |
| RESET Output | Active-low and active-high |
| Manual Reset Input | Active-low (MR) |
Key Features
- Triple supervisory circuits for monitoring three independent supply voltages (e.g., 3.3V/1.8V/adj, 3.3V/2.5V/adj, 3.3V/5V/adj)
- Power-on reset generator with a fixed delay time of 200ms, no external capacitor needed
- Temperature-compensated voltage reference
- Adjustable SENSE input for monitoring any supply voltage >1.25V
- Defined RESET output from VDD ≥ 1.1V
- Manual reset input (MR) for manual system reset
- Available in MSOP-8 and SO-8 packages
Applications
The TPS3307-33DR is designed for use in various processor-based and DSP systems that require multiple supply voltage monitoring. Typical applications include:
- DSP and processor-based systems requiring multiple supply voltages
- Embedded systems needing reliable power-on reset and voltage monitoring
- Industrial control systems where robust voltage supervision is crucial
- Automotive and aerospace systems requiring high reliability and temperature stability
Q & A
- What is the primary function of the TPS3307-33DR?
The primary function is to monitor multiple independent supply voltages and generate a power-on reset signal for DSP and processor-based systems. - What are the available package options for the TPS3307-33DR?
The device is available in MSOP-8 and SO-8 packages. - What is the operating temperature range of the TPS3307-33DR?
The operating temperature range is -40°C to +85°C. - How does the reset delay time work?
The reset delay time is 200ms (typical) and starts after all SENSE inputs have risen above the threshold voltage. - Can the TPS3307-33DR monitor any supply voltage?
- Does the TPS3307-33DR have a manual reset feature?
- What is the maximum supply current of the TPS3307-33DR?
The maximum supply current is 40µA.- Is the RESET output active-low or active-high?
- What is the supply voltage range for the TPS3307-33DR?
The supply voltage range is from 2V to 6V.- Does the TPS3307-33DR require an external capacitor for the reset delay?
- Does the TPS3307-33DR have a manual reset feature?
