Datasheet

TC620/TC621
DS21439D-page 4  2001-2012 Microchip Technology Inc.
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1: PIN FUNCTION TABLE
Pin No.
(8-Pin PDIP)
(8-Pin SOIC)
0°C to +70°C
-40°C to +85°C
-40°C to +125°C
Symbol Description
1 NC No Internal Connection.
2 LOW SET Low temperature set point. Connect an external 1% resistor from LOW SET to V
DD
to set trip point.
3 HIGH SET High temperature set point. Connect an external 1% resistor from HIGH SET to
V
DD
to set trip point.
4 GND Ground Terminal.
5 CONTROL Control output.
6 HIGH LIMIT High temperature push/pull output.
7 LOW LIMIT Low temperature push/pull output.
8V
DD
Power supply input.
Pin No.
(8-Pin PDIP)
(8-Pin SOIC)
0°C to +70°C
-40°C to +85°C
Symbol Description
1 THERMISTOR Thermistor input.
2 HIGH SET High temperature set point. Connect an external 1% resistor from HIGH SET to
V
DD
to set trip point.
3 LOW SET Low temperature set point. Connect an external 1% resistor from LOW SET to
V
DD
to set trip point.
4 GND Ground Terminal.
5 CONTROL Control output.
6LOW
LIMIT Low temperature push/pull output.
7HIGH
LIMIT High temperature push/pull output.
8V
DD
Power supply input.