CAT809, CAT810
3-Pin Microprocessor Power Supply Supervisors FEATURES
s 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
s Offered in two output configurations: - CAT809: Active LOW reset
- CAT810: Active HIGH reset s Direct replacements for the MAX809 and MAX810 in applications operating over the industrial temperature range
s  Reset valid down to V
CC
= 1.0 V
s  6 µA power supply current
s  Power supply transient immunity
s  Compact 3-pin SOT23 and SC70 packages s  Industrial temperature range: -40˚C to +85˚C
© 2004 by Catalyst Semiconductor, Inc., Patent Pending Characteristics subject to change without notice Doc. No. 3004, Rev. S
APPLICATIONS
s Computers
s Servers
s Laptops
s Cable modems
s  Wireless communications s Embedded control systems
s White goods
s Power meters
s Intelligent instruments
s PDAs and handheld equipment
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 are offered 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).
Fast transients on the power supply are ignored and the output is guaranteed to be in the correct state at V cc levels as low as 1.0 V.
The CAT809/810 are fully specified over the industrial temperature range (-40˚C to 85˚C) and are available in compact 3-pin SOT23 and SC70 packages.
PIN CONFIGURATION
CAT809
(CAT810)
GND
RESET
(RESET)
V CC
3-Lead SOT23
3-Lead SC70
1
2
3
THRESHOLD SUFFIX SELECTOR
Nominal Threshold Threshold Suffix Voltage Designation
4.63V L
4.38V M
4.00V J
3.08V T
2.93V S
2.63V R
2.32V Z
H
A L O
G E N F R
E
E
TM
L E
A D F R E E
1
2
CAT809, CAT810
Doc. No. 3004, Rev. S
Patent Pending
ORDERING INFORMATION
Insert threshold suffix (L, M, J, T, S, R or Z) into the blank position. Example: CAT809LTBI-T for 4.63 V.
TOP MARKING
Where YM stands for Year and Month for the SOT23 package and the blank is replaced by the assembly location for the SC70 package.
3
2T O S n
e e r G 32T O S 07C S n
e e r G 07C S L 908T A C M Y A A M Y B D _A F _A G M 908T A C M Y B A M Y C D _B F _B G J 908T A C M Y W C M Y A D _G F _G G T 908T A C M Y C A M Y F D _E F _E G S 908T A C M Y D A M Y E D _D F _D G R 908T A C M Y F A M Y D D _C F _C G Z 908T A C M Y F C M Y G D _F F _F G L 018T A C M Y G A M Y K C _H F _H G M 018T A C M Y H A M Y L C _J F _J G J 018T A C M Y I A M Y J C _P F _P G T 018T A C M Y J A M Y P C _M F _M G S 018T A C M Y K A M Y N C _L F _L G R 018T A C M Y L A M Y M C _K F _K G Z
018T A C M
Y G C M
Y R C _
N F _
N G r
e b m u N t r a P g n i r e d r O y t i r a l o P T E S E R e g a k c a P l
e e R r e p s t r a P T -R U E _908T A C l l u P -h s u P T E S E R 32T O S ,n i p -3k 301T -R U E _908T A C l l u P -h s u P T E S E R 32T O S ,n i p -3k 01T -I B T _908T A C l l u P -h s u P T E S E R n e e r G 32T O S ,n i p -3k 301T -I B T _908T A C l l u P -h s u P T E S E R n
e e r G 32T O S ,n i p -3k 01T -R X E _908T A C l l u P -h s u P T E S E R 07C S ,n i p -3k 301T -R X E _908T A C l l u P -h s u P T E S E R 07C S ,n i p -3k 01T -I D S _908T A C l l u P -h s u P T E S E R n e e r G 07C S ,n i p -3k 301T -I D S _908T A C l l u P -h s u P T E S E R n e e r G 07C S ,n i p -3k 01T -R U E _018T A C T E S E R l l u P -h s u P 32T O S ,n i p -3k 301T -R U E _018T A C T E S E R l l u P -h s u P 32T O S ,n i p -3k 01T -I B T _018T A C l l u P -h s u P T E S E R n e e r G 32T O S ,n i p -3k 301T -I B T _018T A C l l u P -h s u P T E S E R n
e e r G 32T O S ,n i p -3k 01_018T A C R X E T -l l u P -h s u P T E S E R 07C S ,n i p -3k 3_018T A C R X E 01T -l l u P -h s u P T E S E R 07C S ,n i p -3k 01T -I D S _018T A C l l u P -h s u P T E S E R n e e r G 07C S ,n i p -3k 30
1T -I D S _018T A C l l u P -h s u P T
E S E R n
e e r G 07C S ,n i p -3k
01
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CAT809, CAT810
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