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TC1279-5ENB Folha de dados(PDF) 2 Page - Microchip Technology

Nome de Peças TC1279-5ENB
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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TC1278/TC1279
DS21384B-page 2
© 2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage (VCC to GND) ..............................+6.0V
RESET, RESET...........................-0.3V to (VCC +0.3V)
Input Current, VCC ...............................................20mA
Output Current, RESET....................................... 20mA
Power Dissipation (TA ≤ 70°C)
3-Pin SOT-23B (derate 4mW/°C above +70°C)
.................................................................230mW
Operating Temperature Range............. -40°C to +85°C
Storage Temperature Range .............. -65°C to +150°C
*Stresses above 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 above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC1278/TC1279 ELECTRICAL SPECIFICATIONS
Recommended DC Operating Conditions: TA = -40°C to +85°C unless otherwise noted. Typical values are at TA =+25°C.
Symbol
Parameter
Min
Typ
Max
Units
Device
Test Conditions
VCC
Supply Voltage
1.2
5.5
V
Note 1
DC Electrical Characteristics: TA = -40°C to +85°C unless otherwise noted. Typical values are at TA =+25°C.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
VOL
Low Level @ RESET
RESET
0.4
V
TC1278
TC1279
Note 1
IOL
Output Current @ 0.4 Volts
+8
mA
Note 2
ICC1
Operating Current
0.9
2.0
40
mA
µA
TC1278
TC1279
VCC >VCCTP(MAX)
VCC >VCCTP(MAX)
ICC2
Operating Current
0.9
40
2.0
µA
mA
TC1278
TC1279
VCC <VCCTP(MIN)
VCC <VCCTP(MIN)
VCCTP-5 VCC Trip Point (TC1278/9-5)
4.50
4.625
4.74
V
Note 1
VCCTP-10 VCC Trip Point (TC1278/9-10)
4.25
4.375
4.49
V
Note 1
VCCTP-15 VCC Trip Point (TC1278/9-15)
4.00
4.125
4.24
V
Note 1
COUT
Output Capacitance
9
pF
RP
Internal Pull-Up Resistor
3
6
9
k
AC Electrical Characteristics: TA = -40°C to +85°C unless otherwise noted. Typical values are at TA =+25°C.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
tRST
RESET Active Time
250
350
450
msec
tRPD1
VCC Detect to RESET
—2
5
µsec TC1279
Figure 3-2
tRPD2
VCC Detect to RESET
2
5
µsec TC1278
Figure 3-4
tF
VCC Slew Rate
(4.75V-4.00V)
300
µsec
Figure 3-2, Figure 3-4
tR
VCC Slew Rate
(4.00V-4.75V)
0
nsec
Figure 3-1, Figure 3-3
tRPU1
VCC Detect to RESET
250
350
450
msec TC1279
Figure 3-1
tRPU2
VCC Detect to RESET
250
350
450
msec TC1278
Figure 3-3
Note
1:
All voltages referenced to ground.
2:
A1k
Ω external resistor may be required in some applications for proper operation of the microprocessor reset control circuit when using
the TC1279. VCC =1.8V.


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