Overview
The TPS3305-18D is a dual-processor voltage supervisor designed by Texas Instruments. This component is part of the TPS3305 family, which is tailored for circuit initialization in processor-based systems. It features a micropower supply voltage supervisor with a watchdog timer, making it ideal for monitoring and managing power supplies in dual-processor environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Supply Range (VDD) | 2.7 | 6.0 | V | |
| Operating Junction Temperature Range (TJ) | -40 | 85 | °C | |
| High-Level Output Voltage (VOH) | VDD - 0.4 | VDD - 0.4 | V | |
| Low-Level Output Voltage (VOL) | 0.2 | 0.4 | V | |
| Maximum Low Output Current (IOL) | 5 mA | mA | ||
| Maximum High Output Current (IOH) | -5 mA | mA | ||
| Threshold Voltage 1 (Typ) | 2.93 V | V | ||
| Threshold Voltage 2 (Typ) | 1.68 V | V | ||
| Watchdog Timer (WDI) | 1.6 sec | sec | ||
| Reset Timeout | 140 ms | ms | ||
| Package Type | 8-SOIC |
Key Features
- Dual supervisory circuits for DSP- and processor-based systems
- Power-on reset generator with a fixed delay time of 200 ms; no external capacitor needed
- Watchdog timer that retriggers the RESET output at SENSEn ≥ VIT+
- Temperature-compensated voltage references
- Active-high and active-low reset outputs
- Manual reset input
- Low power consumption (typical quiescent current of 40 µA)
- Operating temperature range: -40°C to 85°C
Applications
The TPS3305-18D is suitable for a variety of applications, including:
- Dual-processor systems requiring voltage monitoring and reset functions
- Embedded systems and microcontroller-based designs
- Industrial control systems and automation
- Medical devices and equipment
- Aerospace and defense systems
Q & A
- What is the primary function of the TPS3305-18D?
The TPS3305-18D is a dual-processor voltage supervisor designed to monitor and manage power supplies in processor-based systems.
- What is the input supply range for the TPS3305-18D?
The input supply range is from 2.7 V to 6.0 V.
- What are the typical threshold voltages for the TPS3305-18D?
The typical threshold voltages are 2.93 V and 1.68 V for SENSE1 and SENSE2, respectively.
- Does the TPS3305-18D have a watchdog timer?
Yes, it includes a watchdog timer that retriggers the RESET output at SENSEn ≥ VIT+.
- What is the reset timeout for the TPS3305-18D?
The reset timeout is a minimum of 140 ms.
- What package type is the TPS3305-18D available in?
The TPS3305-18D is available in an 8-pin SOIC package.
- What is the operating temperature range for the TPS3305-18D?
The operating temperature range is from -40°C to 85°C.
- Does the TPS3305-18D support both active-high and active-low reset outputs?
Yes, it supports both active-high and active-low reset outputs.
- What is the typical quiescent current of the TPS3305-18D?
The typical quiescent current is 40 µA.
- Is the TPS3305-18D RoHS compliant?
Yes, the TPS3305-18D is RoHS compliant.
