TC620/TC621
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Symbol
Pin No.
(8-Pin PDIP)
(8-Pin SOIC)
0°C to +70°C
-40°C to +85°C
-40°C to +125°C
Description
1
2
NC
No Internal Connection.
LOW SET
Low temperature set point. Connect an external 1% resistor from LOW SET to V
to set trip point.
DD
3
HIGH SET High temperature set point. Connect an external 1% resistor from HIGH SET to
to set trip point.
V
DD
4
5
6
7
8
GND
Ground Terminal.
CONTROL Control output.
HIGH LIMIT High temperature push/pull output.
LOW LIMIT Low temperature push/pull output.
V
Power supply input.
DD
Pin No.
(8-Pin PDIP)
(8-Pin SOIC)
0°C to +70°C
-40°C to +85°C
Symbol
Description
1
2
THERMISTOR Thermistor input.
HIGH SET
High temperature set point. Connect an external 1% resistor from HIGH SET to
to set trip point.
V
DD
3
LOW SET
Low temperature set point. Connect an external 1% resistor from LOW SET to
to set trip point.
V
DD
4
5
6
7
8
GND
Ground Terminal.
CONTROL
LOW LIMIT
HIGH LIMIT
Control output.
Low temperature push/pull output.
High temperature push/pull output.
Power supply input.
V
DD
DS21439B-page 4
2002 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
