CAT803, CAT809, CAT810

8

Doc. No. 3004, Rev. X

© 2007 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

CAT803 OPEn-DRAIn reSeT APPLICATIOn

The CAT803 features an open-drain RESET output

and therefore needs a pull-up resistor on the output for

proper operation, as shown on Figure 6. An advantage

of the open-drain output includes the ability to “wire

AND” several outputs together to form an inexpensive

logic circuit. It is also possible to have the pull-up resistor

connected to a different supply which can be higher than

is not critical in most applications, typical values being

between 5kΩ and 10kΩ.

CAT803

GND

Power

Supply

RESET

RESET

INPUT

GND

µP

5k

figure 6. Typical CAT803 Open-Drain Circuit Configuration