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TC1272 Folha de dados(PDF) 5 Page - Microchip Technology

Nome de Peças TC1272
Descrição Electrónicos  3-Pin Reset Monitors for 5V Systems
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Fabricante Electrônico  MICROCHIP [Microchip Technology]
Página de início  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

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 2003 Microchip Technology Inc.
DS21382B-page 5
TC1272/TC1273/TC1274
4.0
APPLICATIONS INFORMATION
4.1
Operation – Power Monitor
The TC1272/TC1273/TC1274 is designed to function
as a voltage monitor for +5V systems. These devices
provide a RESET signal to indicate that the VCC has
dropped below a preset voltage level that is selected by
the suffix part number. In addition, the RESET is held
active for approximately 200 ms after the power supply
has risen above the voltage threshold level to allow
time for the power supply to stabilize before system
operation commences.
FIGURE 4-1:
Timing Diagram – Power Up
(TC1272/TC1273).
FIGURE 4-2:
Timing Diagram – Power
Down (TC1272/TC1273).
FIGURE 4-3:
Timing Diagram – Power Up
(TC1274).
FIGURE 4-4:
Timing Diagram –
Power Down (TC1274).
VCCTP(MAX)
VCCTP(MIN)
tR
VCCTP
VCC
RESET
tRPU1
VOH
VCC
RESET
VCCTP(MAX)
VCCTP
VCCTP(MIN)
VOL
tRPD1
tF
tR
tRPU2
VOL
VCCTP
VCC
RESET
VCCTP(MAX)
VCCTP(MIN)
tF
tRPD2
VCC
VCCTP(MAX)
VOH
RESET
VCCTP
VCCTP(MIN)
RESET Slews With VCC


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