Overview
The TS831-4IZ, produced by STMicroelectronics, is an ultra-low power integrated circuit designed for voltage supervision and reset functions. It incorporates a high stability band-gap voltage reference and a comparator with an open drain output. This component is particularly useful in applications requiring precise voltage monitoring and low power consumption.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 1 | - | 5.5 | V |
| Threshold Voltage (VTHI) with VCC Increasing | 4.18 | 4.50 | 4.70 | V |
| Threshold Voltage (VTHD) with VCC Decreasing | 4.13 | 4.40 | 4.66 | V |
| Hysteresis Voltage (VHYS) | 50 | 100 | 200 | mV |
| Current Consumption (ICC) at VCC = 5V | - | 12 | - | µA |
| Low Level Output Voltage (VOL) at VCC = 4V, IOL = 8mA | 450 | 800 | 1300 | mV |
| High Level Output Current (IOH) at VCC = 5V | - | 2 | 1000 | nA |
| Response Time High to Low (TPHL) | - | 20 | - | µs |
| Operating Temperature Range (TOPER) | -40 | - | +125 | °C |
Key Features
- Ultra-low power consumption: 12µA maximum at VCC = 5V.
- Precision reset threshold with internal thermally matched resistors.
- Guaranteed reset operation for VCC down to 1V.
- Open drain output comparator with fast response time of 20µs for a 10mV overdrive.
- Internal built-in hysteresis to increase noise margin and prevent false reset operations.
- Pin-to-pin compatible with MC33064 and MC33164.
- Available in TO92, SO8, and TSSOP8 packages.
Applications
- Power-on reset generator for microcontrollers.
- Power failure detector.
Q & A
- What is the typical threshold voltage for the TS831-4IZ?
The typical threshold voltage for the TS831-4IZ is 4.50V.
- What is the maximum current consumption of the TS831-4IZ at VCC = 5V?
The maximum current consumption is 12µA.
- What is the response time of the comparator for a 10mV overdrive?
The response time is 20µs.
- What is the operating temperature range for the TS831-4IZ?
The operating temperature range is -40°C to +125°C.
- What types of packages are available for the TS831-4IZ?
The TS831-4IZ is available in TO92, SO8, and TSSOP8 packages.
- What is the purpose of the internal hysteresis in the TS831-4IZ?
The internal hysteresis increases the noise margin and prevents false reset operations.
- Is the TS831-4IZ pin-to-pin compatible with other components?
Yes, it is pin-to-pin compatible with MC33064 and MC33164.
- What are the typical applications of the TS831-4IZ?
Typical applications include power-on reset generators for microcontrollers and power failure detectors.
- What is the guaranteed reset operation voltage for the TS831-4IZ?
The TS831-4IZ guarantees reset operation for VCC down to 1V.
- How does the TS831-4IZ handle low supply voltage conditions?
The TS831-4IZ can operate and provide a reset signal even when the supply voltage (VCC) is as low as 1V.
