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TC1270

EOL

Status: End of Life

Features:

  • •Precision VCC Monitor for 1.8V, 2.7V, 3.0V, 3.3V, 5.0V •Nominal Supplies •Manual Reset Input •140msec Minimum RESET   •RESET Output Duration •RESET Output Valid to VCC = 1.0V (TC1270)   •VCC Transient Immunity •No External Components •Replacement for MAX811/812 and Offers a Lower Threshold Voltage Option
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Device Overview

Summary

TC1270 and TC1271 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. No external components are required. The reset output is driven active within 20µsec (4µsec for F version) of VCC falling through the reset voltage threshold. RESET is maintained active for a minimum of 140msec after VCC rises above the reset threshold. The TC1271 has an active-high RESET output while the TC1270 has an active-low RESET output. The output of the TC1270 is valid down to VCC = 1V. Both devices are available in a 4-Pin SOT-143 package. The TC1270/1 are optimized to reject fast transient glitches on the VCC line. Low supply current of 7µA (VCC = 3.3V) makes these devices suitable for battery powered applications.

Please consider this device TC1270A

Additional Features
  • Precision VCC Monitor for 1.8V, 2.7V, 3.0V, 3.3V, 5.0V
  • Nominal Supplies
  • Manual Reset Input
  • 140msec Minimum RESET  
  • RESET Output Duration
  • RESET Output Valid to VCC = 1.0V (TC1270)  
  • VCC Transient Immunity
  • No External Components
  • Replacement for MAX811/812 and Offers a Lower Threshold Voltage Option
Parametrics
Name
Value
Manual Reset
Yes
Typical Reset Pulse Width (ms)
280
Reset Type
Active Low
Typical Supply Current (uA)
7
Vcc Range Min (V)
1.2
Vcc Range Max (V)
5.5
Output
Push-Pull
Temp Range Min. (°C)
-40
Temp Range Max. (°C)
+85
Nominal Reset Voltage (V)
4.54, 4.30, 3.03, 2.88, 2.58, 1.71

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