Overview
The CAT809SSDI-T3 is a 3-pin microprocessor power supply supervisor produced by ON Semiconductor. This device is part of the CAT809 series, which includes supervisory circuits designed to monitor power supplies in digital systems. The CAT809SSDI-T3 is specifically configured with a push-pull RESET output that is active LOW. It is a direct replacement for the MAX809 in applications operating over the industrial temperature range.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| VCC Range | TA = −40°C to +85°C | 1.2 | 5.5 | V | |
| Supply Current (ICC) | TA = −40°C to +85°C, VCC < 3.6 V | 6 | 15 | μA | |
| Reset Threshold Voltage (VTH) | TA = +25°C, S Threshold | 2.89 | 2.93 | 2.96 | V |
| Reset Active Timeout Period | TA = −40°C to +85°C | 140 | 240 | ms | |
| RESET Output Voltage Low | VCC > 1.0 V, ISINK = 50 μA | 0.3 | V | ||
| RESET Output Voltage High | VCC = VTH max, ISOURCE = 500 μA | 0.8 | V | ||
| Operating Temperature Range | −40 | +85 | °C | ||
| Storage Temperature Range | −65 | +105 | °C | ||
| Lead Soldering Temperature (10 sec) | 300 | °C |
Key Features
- Precision monitoring of +5.0 V, +3.3 V, +3.0 V, and +2.5 V power supplies with various tolerance levels.
- Push-pull RESET output (active LOW) for the CAT809 series.
- Direct replacements for the MAX809 in applications operating over the industrial temperature range.
- Reset valid down to VCC = 1.0 V.
- Low power supply current of 6 μA.
- Power supply transient immunity.
- Available in compact 3-pin SOT-23 and SC-70 packages.
- Pb-free and RoHS compliant.
Applications
- Computers, servers, laptops, and cable modems.
- Wireless communications.
- Embedded control systems.
- White goods and power meters.
- Intelligent instruments.
- PDAs and handheld equipment.
Q & A
- What is the primary function of the CAT809SSDI-T3?
The primary function is to monitor power supplies in digital systems and generate a reset signal when the power supply voltage falls below a preset threshold. - What types of packages are available for the CAT809SSDI-T3?
The device is available in both 3-pin SOT-23 and SC-70 packages. - What is the reset output configuration for the CAT809SSDI-T3?
The reset output is configured as a push-pull active LOW reset. - What is the operating temperature range for the CAT809SSDI-T3?
The operating temperature range is −40°C to +85°C. - Is the CAT809SSDI-T3 Pb-free and RoHS compliant?
Yes, the device is Pb-free and RoHS compliant. - What is the typical supply current for the CAT809SSDI-T3?
The typical supply current is 6 μA. - How does the CAT809SSDI-T3 handle power supply transients?
The device ignores fast transients on the power supply and ensures the output is in the correct state at VCC levels as low as 1.0 V. - What is the reset active timeout period for the CAT809SSDI-T3?
The reset active timeout period is between 140 ms to 240 ms. - Can the CAT809SSDI-T3 replace other similar devices?
Yes, it is a direct replacement for the MAX809 in applications operating over the industrial temperature range. - What are some common applications for the CAT809SSDI-T3?
Common applications include computers, servers, wireless communications, embedded control systems, and intelligent instruments.
