TC1275 datasheet(2/12 Pages) MICROCHIP

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TC1275/TC1276/TC1277

DS21383B-page 2

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, 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.

TC1275/TC1276/TC1277 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

1.8

—

5.5

TC1275, TC1276

TC1277

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

VOH

Output Voltage @ 0-500

µAVCC –0.5V VCC – 0.1V

—

TC1275, TC1277 Note 1

IOH

Output Current @ 2.4 Volts

VCC =5V

VCC =2.7V

—

1.3

—

TC1275

TC1277

Note 2

IOL

Output Current @ 0.4 Volts

+10

—

Note 2, Note 5

ICC

Operating Current

VCC <5.5V

VCCTP <VCC <5.5V

VCC <VCCTP

—

350

700

µA

TC1275, TC1277

TC1276

Note 3

VCCTP-5 VCC Trip Point (TC1275/6/7-5)

2.98

3.06

3.15

Note 1

VCCTP-10 VCC Trip Point (TC1275/6/7-10)

2.80

2.88

2.97

Note 1

VCCTP-20 VCC Trip Point (TC1275/6/7-20)

2.47

2.55

2.64

Note 1

COUT

Output Capacitance

—

Internal Pull-Up Resistor

3.0

6.0

9.0

Ω

TC1276

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

100

200

300

msec

tRPD1

VCC Detect to RESET

—20

µsec TC1275, TC1276 VCC(LOW) = 1V, Figure 3-2

tRPD2

VCC Detect to RESET

—

µsec TC1277

VCC(LOW) = 1V, Figure 3-4

VCC Slew Rate

(VCCTP(MAX) to VCCTP(MIN))

300

—

µsec

Figure 3-2, Figure 3-4

VCC Slew Rate

(VCCTP(MIN) to VCCTP(MAX))

—

nsec

Figure 3-1, Figure 3-3

tRPU1

VCC Detect to RESET

100

200

300

msec TC1275, TC1276 Note 4, Figure 3-1

tRPU2

VCC Detect to RESET

100

200

300

msec TC1277

Note 4, Figure 3-3

Note

All voltages referenced to ground.

Measured with VCC ≥ 2.7 volts.

Measured with RESET output open for TC1275/TC1276; measured with RESET output open for TC1277.

tR =5µsec.

A1k

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

the TC1276.

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