TC620/TC621

DS20001439E-page 4

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2.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1:

TC620 PIN FUNCTION TABLE

TABLE 2-2:

TC621 PIN FUNCTION TABLE

Pin No.

(8-Pin PDIP)

(8-Pin SOIC)

Symbol

Description

1

NC

No Internal Connection.

2

LOW SET

to set trip point.

3

HIGH SET

High temperature set point. Connect an external 1% resistor from HIGH SET to

4

GND

Ground Terminal.

5

CONTROL

Control output.

6

HIGH LIMIT

High temperature push/pull output.

7

LOW LIMIT

Low temperature push/pull output.

Power supply input.

Pin No.

(8-Pin PDIP)

(8-Pin SOIC)

Symbol

Description

1

THERMISTOR

Thermistor input.

2

HIGH SET

High temperature set point. Connect an external 1% resistor from HIGH SET to

3

LOW SET

Low temperature set point. Connect an external 1% resistor from LOW SET to

4

GND

Ground Terminal.

5

CONTROL

Control output.

6LOW LIMIT

Low temperature push/pull output.

7HIGH LIMIT

High temperature push/pull output.

Power supply input.