CAT810 General Description
The CAT809 and CAT810 are µP supervisory circuits that monitor power supplies in digital systems. The CAT809 and CAT810 are direct replacements for the MAX809 and MAX810 in applications operating over the industrial temperature range.
These devices generate a reset signal, which is asserted while the power supply voltage is below a preset threshold level and for at least 140 ms after the power supply level has risen above that level. The underlying floating gate technology, AE2(TM) used by Catalyst Semiconductor, makes it possible to offer any custom reset threshold value. Seven industry standard threshold levels areoffered to support +5.0 V, +3.3 V, +3.0 V and +2.5 V systems.
The CAT809 features a RESET push-pull output (active LOW) and the CAT810 features a RESET push-pull output (active HIGH).
CAT810 Maximum Ratings
Any pin with respect to ground .......... -0.3 V to +6.0 V
Input Current, VCC ........................................... 20 mA
Output Current, RESET, RESET .......................... 20 mA
Rate of Rise, VCC ......................................... 100 V/µs
Continuous Power Dissipation
Derate 2.2mW/˚C above 70˚C (SC70) .......... 175 mW
Derate 4mW/˚C above 70˚C (SOT23) ........... 320 mW
Operating Temperature Range........ -40°C to +85°C
Storage Temperature Range ........ -65°C to +105°C
Lead Soldering Temperature (10 sec) ............ 300°C
CAT810 Features
Precision monitoring of
+5.0 V (+/- 5%, +/- 10%, +/- 20%),
+3.3 V (+/- 5%, +/ 10%),
+3.0 V (+/- 10%) and
+2.5 V (+/- 5%) power supplies
Offered in two output configurations:
- CAT809: Active LOW reset
- CAT810: Active HIGH reset
Direct replacements for the MAX809 and
MAX810 in applications operating over the
industrial temperature range
Reset valid down to VCC = 1.0 V
6 µA power supply current
Power supply transient immunity
Compact 3-pin SOT23 and SC70 packages
Industrial temperature range: -40˚C to +85˚C
CAT810 Typical Application
Computers
Servers
Laptops
Cable modems
Wireless communications
Embedded control systems
White goods
Power meters
Intelligent instruments
PDAs and handheld equipment
CAT810 Connection Diagram
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