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TC1274 Datasheet

  • TC1274

  • 3-Pin Reset Monitors for 5V Systems

  • 464.00KB

  • 12頁(yè)

  • MICROCHIP   MICROCHIP

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TC1272/TC1273/TC1274
1.0
ELECTRICAL
CHARACTERISTICS
鈥?Stresses above those listed under "Absolute Maximum Rat-
ings" 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. Expo-
sure to Absolute Maximum Rating conditions for extended
periods may affect device reliability.
Absolute Maximum Ratings鈥?/div>
Supply Voltage (V
CC
to GND) .............................+6.0V
RESET, RESET.......................... -0.3V to (V
CC
+ 0.3V)
Input Current, V
CC
..............................................20 mA
Output Current, RESET, RESET ........................20 mA
Power Dissipation (T
A
鈮?/div>
70擄C)
3-Pin SOT-23B (derate 4 mW/擄C above +70擄C)
................................................................230 mW
Operating Temperature Range............. -40擄C to +85擄C
Storage Temperature Range .............. -65擄C to +150擄C
DC CHARACTERISTICS
Electrical Specifications:
Unless otherwise noted, T
A
= -40擄C to +85擄C. Typical values are at T
A
= +25擄C.
Parameters
Supply Voltage
TC1272, TC1273
TC1274
Output Voltage @ 0-500 碌A(chǔ)
Output Current @ 2.4 Volts
V
CC
= 5V TC1272
V
CC
= 4V TC1274
Output Current @ 0.4 Volts
Operating Current
V
CC
< 5.5V: TC1272, TC1274
V
CCTP
< V
CC
< 5.5V: TC1273
V
CC
< V
CCTP
: TC1273
V
CC
Trip Point (TC1272/3/4-5)
I
CC
I
CC
I
CC
V
CCTP-5
鈥?/div>
鈥?/div>
鈥?/div>
4.50
4.25
4.00
鈥?/div>
3
100
鈥?/div>
鈥?/div>
300
0
100
100
17
17
700
4.62
4.37
4.12
9
6
200
20
20
鈥?/div>
鈥?/div>
200
200
40
40
1200
4.75
4.49
4.24
鈥?/div>
9
300
50
50
鈥?/div>
鈥?/div>
300
300
碌A(chǔ)
碌A(chǔ)
碌A(chǔ)
V
V
V
pF
k鈩?/div>
msec
碌sec
碌sec
碌sec
nsec
msec
msec
V
CC(LOW)
= 1V, Figure 4-2
V
CC(LOW)
= 1V, Figure 4-4
Figure 4-2, Figure 4-4
Figure 4-1, Figure 4-3
Note 4,
Figure 4-1
Note 4,
Figure 4-3
Note 3
Note 3
Note 3
Note 1
Note 1
Note 1
I
OH
I
OH
I
OL
鈥?/div>
鈥?/div>
+10
10
8
30
鈥?/div>
鈥?/div>
鈥?/div>
mA
mA
mA
Note 2, Note 5
Note 2
V
CC
V
CC
V
OH
1.2
1.8
鈥?/div>
鈥?/div>
5.5
5.5
鈥?/div>
V
V
V
TC1272, TC1274
(Note 1)
Note 1
Sym
Min
Typ
Max
Units
Conditions
V
CC
鈥?0.5V V
CC
鈥?0.1V
V
CC
Trip Point (TC1272/3/4-10) V
CCTP-10
V
CC
Trip Point (TC1272/3/4-15) V
CCTP-15
Output Capacitance
Internal Pull-Up Resistor
RESET Active Time
V
CC
Detect to RESET
TC1272, TC1273
V
CC
Detect to RESET - TC1274
V
CC
Slew Rate
(V
CCTP
(MAX) to V
CCTP
(MIN))
V
CC
Slew Rate
(V
CCTP
(MIN) to V
CCTP
(MAX))
V
CC
Detect to RESET
TC1272, TC1273
V
CC
Detect to RESET - TC1274
Note 1:
2:
3:
4:
5:
C
OUT
R
P
t
RST
t
RPD1
t
RPD2
t
F
t
R
t
RPU1
t
RPU2
AC Electrical Characteristics:
T
A
= -40擄C to +85擄C unless otherwise noted. Typical values are at T
A
= +25擄C.
All voltages referenced to ground.
Measured with V
CC
鈮?/div>
2.7 volts.
Measured with RESET output open for TC1272/TC1273; measured with RESET output open for TC1274.
t
R
= 5 碌sec.
A 1 k鈩?external resistor may be required in some applications for proper operation of the microprocessor reset control
circuit when using the TC1273.
DS21382B-page 2
錚?/div>
2003 Microchip Technology Inc.

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