TC1274 datasheet(2/12 Pages) MICROCHIP

2 / 12 page

TC1272/TC1273/TC1274

DS21382B-page 2

 2003 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..............................................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

1.2

—

5.5

Note 1

TC1274

VCC

1.8

—

5.5

Output Voltage @ 0-500 µA

VOH

VCC – 0.5V VCC – 0.1V

—

TC1272, TC1274 (Note 1)

Output Current @ 2.4 Volts

VCC = 5V TC1272

IOH

—10

—

Note 2

VCC = 4V TC1274

IOH

—8

—

Output Current @ 0.4 Volts

IOL

+10

—

Note 2, Note 5

Operating Current

VCC < 5.5V: TC1272, TC1274

ICC

—17

µA

Note 3

VCCTP < VCC < 5.5V: TC1273

ICC

—17

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

Note 1

VCC Trip Point (TC1272/3/4-10) VCCTP-10

4.25

4.37

4.49

Note 1

VCC Trip Point (TC1272/3/4-15) VCCTP-15

4.00

4.12

4.24

Note 1

Output Capacitance

COUT

—9

—

Internal Pull-Up Resistor

Ω

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

µsec

VCC(LOW) = 1V, Figure 4-2

VCC Detect to RESET - TC1274

tRPD2

—20

µsec

VCC(LOW) = 1V, Figure 4-4

VCC Slew Rate

(VCCTP(MAX) to VCCTP(MIN))

300

—

µsec

Figure 4-2, Figure 4-4

VCC Slew Rate

(VCCTP(MIN) to VCCTP(MAX))

—

nsec

Figure 4-1, Figure 4-3

VCC Detect to RESET

TC1272, TC1273

tRPU1

100

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 k

Ω external resistor may be required in some applications for proper operation of the microprocessor reset control

circuit when using the TC1273.

TC1274 Datasheet(PDF) 2 Page - Microchip Technology

TC1274 Datasheet(HTML) 2 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

Datasheet Download

Link URL