TC6504(2004) Ver la hoja de datos (PDF) - Microchip Technology

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Fabricante

TC6504
(Rev.:2004)

Ultra Small Temperature Switches with Pin Selectable Hysteresis

Microchip Technology 

TC6501/2/3/4

3.0 PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1: PIN FUNCTION TABLE

TC6501 TC6502 TC6503 TC6504 Symbol

1, 2

1, 2

1, 2

1, 2

GND

3

3

3

3

HYST

4

4

4

4

VCC

5

—

—

—

TOVER

—

5

—

—

TOVER

—

—

5

—

TUNDER

—

—

—

5

TUNDER

Description

Ground

Hysteresis Input

Supply Input (+2.7V to +5.5V)

Open-Drain, Active-Low Output

Push/Pull Active-High Output

Open-Drain, Active-Low Output

Push/Pull Active-High Output

3.1 Ground

Connect the device ground pins directly to the PCB

ground and minimize the length of the connection. The

thermal resistance to the die is at a minimum at Pin 2.

3.2 Hysteresis Input (HYST)

Either 2°C (GND) or 10°C (VCC) of hysteresis is

selected by connecting HYST to GND or VCC.

3.3 Supply Input (VCC)

A 100 pF or greater decoupling capacitor from VCC to

GND is recommended.

3.4 Open-Drain, Active-Low Output

(TC6501) (TOVER)

The voltage at the TOVER pin is equal to a logic-low

level if the sensor detects a temperature that is greater

than the factory-programmed threshold temperature.

Because this is an open-drain output, an external pull-

up resistor is required (a 100 kΩ pull-up resistor is

recommended). The voltage on this pin can be higher

than VCC, though the voltage must not exceed the

absolute maximum input voltage of 7.0V.

3.5 Push/Pull Active-High Output

(TC6502) (TOVER)

The voltage at TOVER is equal to a logic-high level if the

sensor detects a temperature greater than the factory-

programmed threshold temperature.

3.6 Open-Drain, Active-Low Output

(TC6503) (TUNDER)

The voltage at the TUNDER pin is equal to a logic-low

level if the sensor detects a temperature that is less

than the factory-programmed threshold temperature.

Because this is an open-drain output, an external pull-

up resistor is required (a 100 kΩ pull-up resistor is

recommended). The voltage on this pin can be higher

than VCC, though the voltage must not exceed the

absolute maximum input voltage of 7.0V

3.7 Push/Pull Active-High Output

(TC6504) (TUNDER)

The voltage at TUNDER is equal to a logic-high level if

the sensor detects a temperature less than the factory-

programmed threshold temperature.

 2004 Microchip Technology Inc.

DS21451D-page 5

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