Overview
The TPS3421EGDRYR is a low-power, dual-channel push-button controller with configurable delay and reset pulse, manufactured by Texas Instruments. This device is designed to provide a reliable and efficient way to manage system resets and avoid unwanted resets due to short push-button closures or key presses. It operates within a wide voltage range of 1.6 V to 6.5 V, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 1.6 to 6.5 | V |
| Supply Current (Typical) | 250 nA (Standby), 3.4 µA (Active) | nA/µA |
| Push-Button Timer (tTIMER) | 6 to 12.5 seconds (TS = GND or VCC) | s |
| Reset Pulse Duration (tRST) | 320 to 480 ms | ms |
| Detection Delay (tDD) | 150 µs | µs |
| Start-up Delay (tSD) | 300 µs | µs |
| High-Level Input Voltage (VIH) | 0.7 VCC | V |
| Low-Level Input Voltage (VIL) | 0.3 VCC | V |
| Operating Temperature Range | -40°C to 125°C | °C |
Key Features
- Low Power Consumption: Typical standby supply current of 250 nA and active supply current of 3.4 µA, making it suitable for battery-powered devices.
- Configurable Delay: User-selectable input delay and reset pulse duration to accommodate various application requirements.
- Dual-Channel Input: Monitors two inputs (PB1 and PB2) and outputs an active-low reset pulse signal when both inputs are low for the selected time period.
- Wide Operating Voltage Range: Operates from 1.6 V to 6.5 V, ensuring compatibility with a variety of power supply configurations.
- Small Package Size: Available in compact packages, ideal for space-constrained designs.
Applications
- Consumer Electronics: Suitable for use in devices such as smartphones, tablets, and other portable electronics where low power consumption is critical.
- Industrial Automation: Used in control systems and industrial equipment where reliable reset mechanisms are essential.
- Medical Devices: Applicable in medical devices that require precise and reliable reset functions.
- Automotive Systems: Employed in automotive electronics for managing system resets efficiently.
Q & A
- What is the operating voltage range of the TPS3421EGDRYR?
The TPS3421EGDRYR operates within a voltage range of 1.6 V to 6.5 V.
- What is the typical standby supply current of the TPS3421EGDRYR?
The typical standby supply current is 250 nA.
- How many input channels does the TPS3421EGDRYR have?
The TPS3421EGDRYR has two input channels (PB1 and PB2).
- What is the range of the push-button timer (tTIMER) for the TPS3421EGDRYR?
The push-button timer ranges from 6 to 12.5 seconds depending on the TS pin configuration.
- What is the reset pulse duration (tRST) for the TPS3421EGDRYR?
The reset pulse duration ranges from 320 to 480 ms.
- What is the detection delay (tDD) for the TPS3421EGDRYR?
The detection delay is 150 µs.
- What is the start-up delay (tSD) for the TPS3421EGDRYR?
The start-up delay is 300 µs.
- What are the high-level and low-level input voltage thresholds for the TPS3421EGDRYR?
The high-level input voltage threshold is 0.7 VCC, and the low-level input voltage threshold is 0.3 VCC).
- What is the operating temperature range of the TPS3421EGDRYR?
The operating temperature range is -40°C to 125°C).
- In what types of applications is the TPS3421EGDRYR commonly used?
The TPS3421EGDRYR is commonly used in consumer electronics, industrial automation, medical devices, and automotive systems).
