TCM811

Features:

• Precision VDD Monitor for 2.0V, 2.8V, 3.0V, 3.3V, 5.0V Nominal Supplies
• Manual Reset Input
• 140 ms Minimum RESET Output Duration
•RESET Output Valid to V_DD = 1.0V (TCM811)
• Low 6 A (typ.) Supply Current
• V_DD Transient Immunity
• Small 4-Pin SOT-143 Package
• No External Components
• Replacement for MAX811/812 and Offers a Lower Threshold Voltage Option
• Push-Pull RESET Output
• Temperature Range:
- Commercial (C) -40 to +85




Application

• Computers
• Embedded Systems
• Battery Powered Equipment
• Critical Microcontroller Power Supply Monitoring




Pinout






Specifications

Parameter Name	Value
Manual Reset	Yes
Watchdog Timer	No
Typical Reset Pulse Width (ms)	140
Reset Type	Active Low
Typical Supply Current (uA)	6
Vcc Range Min (V)	1.0
Vcc Range Max (V)	5.5
Output	Push-Pull
Temp Range Min. (°C)	-40
Temp Range Max. (°C)	+85
Nominal Reset Voltage (V)	4.50, 4.25, 3.00, 2.85, 2.55, 1.70

Parameter NameValueManual ResetYesWatchdog TimerNoTypical Reset Pulse Width (ms)140Reset TypeActive Low Typical Supply Current (uA)6Vcc Range Min (V)1.0Vcc Range Max (V)5.5OutputPush-PullTemp Range Min. (°C)-40Temp Range Max. (°C)+85Nominal Reset Voltage (V)4.50, 4.25, 3.00, 2.85, 2.55, 1.70

Supply Voltage (V_DD to GND)........................................+6.0V
RESET, RESET.................................... - 0.3V to (V_DD + 0.3V)
Input Current, V_DD........................................................20 mA
Output Current, RESET, RESET...................................20 mA
Operating Temperature Range...................... 40 to +85
Storage Temperature Range....................... 65 to +150
Maximum Junction Temperature, T_S.............................. 150

*Notice: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Description

The TCM811 and TCM812 are cost-effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. A manual reset input is provided to override the reset monitor, and is suitable for use as a push-button reset. The TCM811 has an active-low RESET output while the TCM812 has an active-high RESET output. Both devices are available in industry standard pin-out and industry standard 4-Pin SOT-143 package. The TCM811/812 are optimized to reject fast transient glitches on the VCC line and are suitable for all battery powered applications.