TC1274 Microchip Technology, TC1274 Datasheet - Page 5

• Manufacturer Part Number: TC1274
• Description: (TC1272 / TC1273 / TC1274) 3-Pin Reset Monitors for 5V Systems
• Manufacturer: Microchip Technology

4.0
4.1
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 V
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:
(TC1272/TC1273).
FIGURE 4-2:
Down (TC1272/TC1273).
2003 Microchip Technology Inc.
V
V
RESET
RESET
CC
CC
APPLICATIONS INFORMATION
Operation – Power Monitor
V
CCTP
(MAX)
V
CCTP
V
CCTP
(MIN)
Timing Diagram – Power Up
Timing Diagram – Power
V
CCTP
V
V
CCTP
V
t
RPU1
OL
CCTP
(MIN)
t
F
t
R
t
(MAX)
RPD1
V
OH
CC
has
TC1272/TC1273/TC1274
FIGURE 4-3:
(TC1274).
FIGURE 4-4:
Power Down (TC1274).
V
V
RESET
V
CCTP
CC
RESET
CC
(MAX)
V
CCTP
V
CCTP
V
OH
(MIN)
V
Timing Diagram – Power Up
Timing Diagram –
CCTP
t
F
(MIN)
t
RPD2
RESET Slews With V
V
CCTP
t
RPU2
V
CCTP
DS21382B-page 5
(MAX)
t
R
V
OL
CC