TC1272 View Datasheet(PDF) - Microchip Technology
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TC1272 Datasheet PDF : 12 Pages
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TC1272/TC1273/TC1274
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..............................................20 mA
Output Current, RESET, RESET ........................20 mA
Power Dissipation (TA ≤ 70°C)
3-Pin SOT-23B (derate 4 mW/°C above +70°C)
................................................................230 mW
Operating Temperature Range............. -40°C to +85°C
Storage Temperature Range .............. -65°C to +150°C
† 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.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, TA = -40°C to +85°C. Typical values are at TA = +25°C.
Parameters
Sym
Min
Typ
Max Units
Conditions
Supply Voltage
TC1272, TC1273 VCC
TC1274 VCC
Output Voltage @ 0-500 µA
VOH
Output Current @ 2.4 Volts
1.2
—
5.5
1.8
—
5.5
VCC – 0.5V VCC – 0.1V —
V Note 1
V
V TC1272, TC1274 (Note 1)
VCC = 5V TC1272 IOH
—
VCC = 4V TC1274 IOH
—
Output Current @ 0.4 Volts
IOL
+10
Operating Current
10
—
mA Note 2
8
—
mA
30
—
mA Note 2, Note 5
VCC < 5.5V: TC1272, TC1274 ICC
—
17
40
µA Note 3
VCCTP < VCC < 5.5V: TC1273 ICC
—
17
40
µA Note 3
VCC < VCCTP: TC1273
ICC
—
700
1200 µA Note 3
VCC Trip Point (TC1272/3/4-5) VCCTP-5
4.50
4.62
4.75
V Note 1
VCC Trip Point (TC1272/3/4-10) VCCTP-10
4.25
4.37
4.49
V Note 1
VCC Trip Point (TC1272/3/4-15) VCCTP-15
4.00
4.12
4.24
V Note 1
Output Capacitance
COUT
—
9
—
pF
Internal Pull-Up Resistor
RP
3
6
9
kΩ
AC Electrical Characteristics: TA = -40°C to +85°C unless otherwise noted. Typical values are at TA = +25°C.
RESET Active Time
tRST
100
200
300 msec
VCC Detect to RESET
TC1272, TC1273
tRPD1
—
20
50
µsec VCC(LOW) = 1V, Figure 4-2
VCC Detect to RESET - TC1274
tRPD2
—
VCC Slew Rate
(VCCTP(MAX) to VCCTP(MIN))
tF
300
VCC Slew Rate
tR
0
(VCCTP(MIN) to VCCTP(MAX))
VCC Detect to RESET
TC1272, TC1273
tRPU1
100
20
50
µsec VCC(LOW) = 1V, Figure 4-4
—
—
µsec Figure 4-2, Figure 4-4
—
—
nsec Figure 4-1, Figure 4-3
200
300 msec Note 4, Figure 4-1
VCC Detect to RESET - TC1274
tRPU2
100
200
300 msec Note 4, Figure 4-3
Note 1: All voltages referenced to ground.
2: Measured with VCC ≥ 2.7 volts.
3: Measured with RESET output open for TC1272/TC1273; measured with RESET output open for TC1274.
4: tR = 5 µsec.
5: A 1 kΩ external resistor may be required in some applications for proper operation of the microprocessor reset control
circuit when using the TC1273.
DS21382B-page 2
2003 Microchip Technology Inc.
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