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CAT809, CAT810
3-Pin Microprocessor Power Supply Supervisors FEATURES
s Precision monitoring of
H
GEN FR ALO
EE
LE
A D F R E ETM
s Direct replacements for the MAX809 and
+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:
MAX810 in applications operating over the industrial temperature range
s Reset valid down to VCC = 1.0 V s6
A power supply current
- CAT809: Active LOW reset - CAT810: Active HIGH reset
s Power supply transient immunity s Compact 3-pin SOT23 and SC70 packages s Industrial temperature range: -40C to +85C
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 P 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 Vcc levels as low as 1.0 V. The CAT809/810 are fully specified over the industrial temperature range (-40C to 85C) and are available in compact 3-pin SOT23 and SC70 packages.
THRESHOLD SUFFIX SELECTOR
Nominal Threshold Voltage 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V 2.32V Threshold Suffix Designation L M J T S R Z
1
PIN CONFIGURATION
GND 1 CAT809 (CAT810) RESET 2 (RESET) 3 VCC
3-Lead SOT23 3-Lead SC70
(c) 2004 by Catalyst Semiconductor, Inc., Patent Pending Characteristics subject to change without notice
Doc. No. 3004, Rev. S
CAT809, CAT810 ORDERING INFORMATION
Ordering Part Number CAT809_EUR-T CAT809_EUR-T10 CAT809_TBI-T CAT809_TBI-T10 CAT809_EXR-T CAT809_EXR-T10 CAT809_SDI-T CAT809_SDI-T10 CAT810_EUR-T CAT810_EUR-T10 CAT810_TBI-T CAT810_TBI-T10 CAT810_EXR-T CAT810_EXR-T10 CAT810_SDI-T CAT810_SDI-T10 RESET Polarity Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET Package 3-pin, SOT23 3-pin, SOT23 3-pin, SOT23 Green 3-pin, SOT23 Green 3-pin, SC70 3-pin, SC70 3-pin, SC70 Green 3-pin, SC70 Green 3-pin, SOT23 3-pin, SOT23 3-pin, SOT23 Green 3-pin, SOT23 Green 3-pin, SC70 3-pin, SC70 3-pin, SC70 Green 3-pin, SC70 Green Parts per Reel 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k
Insert threshold suffix (L, M, J, T, S, R or Z) into the blank position. Example: CAT809LTBI-T for 4.63 V.
TOP MARKING
SOT23 CAT809L CAT809M CAT809J CAT809T CAT809S CAT809R CAT809Z CAT810L CAT810M CAT810J CAT810T CAT810S CAT810R CAT810Z AAYM ABYM CWYM ACYM ADYM AFYM CFYM AGYM AHYM AIYM AJYM AKYM ALYM CGYM SOT23 Green DBYM DCYM DAYM DFYM DEYM DDYM DGYM CKYM CLYM CJYM CPYM CNYM CMYM CRYM SC70 FA_ FB_ FG_ FE_ FD_ FC_ FF_ FH_ FJ_ FP_ FM_ FL_ FK_ FN_ SC70 Green GA_ GB_ GG_ GE_ GD_ GC_ GF_ GH_ GJ_ GP_ GM_ GL_ GK_ GN_
Where YM stands for Year and Month for the SOT23 package and the blank is replaced by the assembly location for the SC70 package.
Doc. No. 3004, Rev. S
2
Patent Pending
CAT809, CAT810 PIN DESCRIPTIONS
Pin Number CAT809 1 2 -- CAT810 1 -- 2 GND RESET RESET Ground Active LOW reset. RESET is asserted if VCC falls below the reset threshold and remains low for at least 140ms after VCC rises above the reset threshold. Active HIGH reset. RESET is asserted if VCC falls below the reset threshold and remains high for at least 140ms after VCC rises above the reset threshold. Power supply voltage that is monitored. Name Description
3
3
VCC
Patent Pending
3
Doc. No. 3004, Rev. S
CAT809, CAT810 ABSOLUTE 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/s Continuous Power Dissipation Derate 2.2mW/C above 70C (SC70) ......... 175 mW Derate 4mW/C above 70C (SOT23) ......... 320 mW ELECTRICAL CHARACTERISTICS VCC = Full range, TA = -40C to +85C unless otherwise noted. Typical values at TA = +25C and VCC = 5 V for the L/M/J versions, VCC = 3.3 V for the T/S versions, VCC = 3 V for the R version and VCC = 2.5 V for the Z version.
Parameter VCC Range Symbol Conditions TA = 0C to +70C TA = -40C to +85C Supply Current ICC TA = -40C to +85C VCC < 5.5 V, J/L/M VCC < 3.6 V, R/S/T/Z TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C J Threshold TA = -40C to +85C TA = +25C TA = -40C to +85C S Threshold TA = +25C TA = -40C to +85C TA = +25C R Threshold TA = -40C to +85C TA = +25C TA = -40C to +85C 4.56 4.50 4.31 4.25 3.93 3.89 3.04 3.00 2.89 2.85 2.59 2.55 2.28 2.25 2.32 2.63 2.93 3.08 4.00 4.38 Min 1.0 1.2 8 6 4.63 Typ Max 5.5 5.5 20 15 4.70 4.75 4.45 4.50 4.06 4.10 3.11 3.15 2.96 3.00 2.66 2.70 2.35 2.38 Units
Operating Temperature Range ........... -40C to +85C Storage Temperature Range ............ -65C to +105C Lead Soldering Temperature (10 sec) .............. 300C
*COMMENT Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
V A
L Threshold
M Threshold
Reset Threshold Voltage VTH
T Threshold
V
Z Threshold
Doc. No. 3004, Rev. S
4
Patent Pending
CAT809, CAT810
ELECTRICAL CHARACTERISTICS (continued) VCC = Full range, TA = -40C to +85C unless otherwise noted. Typical values at TA = +25C and VCC = 5 V for L/M/J versions, VCC = 3.3 V for T/S versions, VCC = 3 V for R version and VCC = 2.5 V for Z version. Parameter
Reset Threshold Tempco VCC to Reset Delay (Note 2) Reset Active Timeout Period VCC = VTH to (VTH - 100 mV) TA = -40C to +85C VCC = VTH min, ISINK = 1.2 mA RESET Output Voltage Low (Push-pull, active LOW, CAT809) CAT809R/S/T/Z VOL VCC = VTH min, ISINK = 3.2 mA CAT809J/L/M VCC > 1.0 V, ISINK = 50 A VCC = VTH max, ISOURCE = 500 A RESET Output Voltage High (Push-pull, active LOW, CAT809) VOH CAT809R/S/T/Z VCC = VTH max, ISOURCE = 800 A CAT809J/L/M VCC > VTH max, ISINK = 1.2 mA RESET Output Voltage Low (Push-pull, active HIGH, CAT810) RESET Output Voltage High (Push-pull active HIGH, CAT810) CAT810R/S/T/Z VOL VCC > VTH max, ISINK = 3.2 mA CAT810J/L/M VOH 1.8 V < VCC VTH min, ISOURCE = 150 A 0.8 VCC V 0.4 VCC - 1.5 0.3 V 0.8 VCC V 0.4 0.3 140
Symbol
Conditions
Min
Typ(1)
30 20 240
Max
Units
ppm/C s
400 0.3
ms
V
Note 1: Production testing done at TA = +25C; limits over temperature guaranteed by design only. Note 2: RESET output for the CAT809; RESET output for the CAT810
Patent Pending
5
Doc. No. 3004, Rev. S
CAT809, CAT810
TYPICAL OPERATING CHARACTERISTICS VCC = Full range, TA = -40C to +85C unless otherwise noted. Typical values at TA = +25C and VCC = 5 V for L/M/J versions, VCC=3.3 V for T/S versions, VCC = 3 V for R version and VCC = 2.5 V for Z version.
POWER-UP RESET TIMEOUT VS. TEMPERATURE SUPPLY CURRENT VS. TEMPERATURE (NO LOAD, CAT8xxR/S/T/Z) 12 VCC=5.5V
POWER-UP RESET TIMEOUT (mS)
260
SUPPLY CURRENT (A)
240 220 200
VCC=5V
10 8 6 4 2 0
VCC=3.6V
VCC=2.5V 180 160 -50 0 50 100 150
-50
0
50
100
150
TEMPERATURE (C)
TEMPERATURE (C)
POWER-DOWN RESET DELAY VS. TEMPERATURE (CAT8xxR/S/T/Z)
NORMALIZED RESET THRESHOLD VS. TEMPERATURE 1.0002
POWER-DOWN RESET DELAY (S)
14
NORMALIZED THRESHOLD
0 50 100 150
12 10 8 6 4 2 0 -50
1 0.9998 0.9996 0.9994 0.9992 0.999 0.9988 0 20 40 60 80 100 120
TEMPERATURE (C)
TEMPERATURE (C)
Doc. No. 3004, Rev. S
6
Patent Pending
CAT809, CAT810 DETAILED DESCRIPTIONS
RESET TIMING The reset signal is asserted LOW for the CAT809 and HIGH for the CAT810 when the power supply voltage falls below the threshold trip voltage and remains asserted for at least 140ms after the power supply voltage has risen above the threshold.
Power 5V Supply Voltage 0V Threshold Voltage Reset Timeout Period 140ms minimum
RESET
5V 0V 5V
CAT809
RESET 0V
CAT810
FIGURE 1. RESET TIMING DIAGRAM
VCC TRANSIENT RESPONSE The CAT809/810 protect Ps against brownout failure. Short duration transients of 4sec or less and 100 mV amplitude typically do not cause a false RESET. Figure 2 shows the maximum pulse duration of negative-going VCC transients that do not cause a reset condition. As the amplitude of the transient goes further below the threshold (increasing VTH - VCC), the maximum pulse duration decreases. In this test, the VCC starts from an initial voltage of 0.5V above the threshold and drops below it by the amplitude of the overdrive voltage (VTH - VCC).
30
TRANSIENT DURATION [s)
25 20 15 10 5 0 1 10 CAT809M
TAMB = 25C
CAT809Z
100
1000
RESET OVERDRIVE VTH - VCC [mV]
FIGURE 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive
Patent Pending
7
Doc. No. 3004, Rev. S
CAT809, CAT810
VALID RESET WITH VCC UNDER 1.0 V To ensure that the CAT809 RESET pin is in a known state when VCC is under 1.0 V, a 100 k pull-down resistor between RESET pin and GND is recommended; the value is not critical. For the CAT810, a pull-up resistor from RESET pin to VCC is needed.
Power Supply VCC Power Supply VCC
CAT810 CAT809
RESET GND 100k GND RESET
100k
FIGURE 3. RESET Valid with VCC Under 1.0 V
FIGURE 4. RESET Valid with VCC Under 1.1 V
BI-DIRECTIONAL RESET PIN INTERFACING The CAT809/810 can interface with P/C bi-directional reset pins by connecting a 4.7 k resistor in series with the CAT809/810 reset output and the P/C bi-directional reset pin.
BUF Power Supply VCC
Buffered RESET
CAT809
4.7k RESET GND Bi-directional I/O Pin
P
RESET INPUT GND (For example: 68HC11)
FIGURE 5. Bi-directional Reset Pin Interfacing
Doc. No. 3004, Rev. S
8
Patent Pending
CAT809, CAT810
OTHER SUPERVISORY PRODUCTS Function
With 16k Bit Serial EEPROM Memory Watchdog Timer Manual Reset Input Active Low Reset Active High Reset Dual Polarity Reset Outputs Package 8-pin DIP and SOIC 8-pin DIP and SOIC 3-pin SOT23 and SC70 3-pin SOT23 and SC70 4-pin SOT143 4-pin SOT143
CAT1161/3
CAT1162
CAT809
CAT810
CAT811
CAT812
Patent Pending
9
Doc. No. 3004, Rev. S
CAT809, CAT810
PACKAGE INFORMATION Plastic SOT-23 (3-Pin) Min Inches Max Millimeters Min Max
Plastic SOT-23 (3-Pin) A A1 B c D E e
B
0.0350 0.0005 0.0146 0.0033 0.1102 0.0472 0.0350 0.0701 0.0827 0 0.0083 0.0160
0.0441 0.0039 0.0197 0.0071 0.1197 0.0551 0.0406 0.0807 0.1039 8 0.0161 0.0270
0.89 0.013 0.37 0.085 2.80 1.20 0.89 1.78 2.10 0 0.275 0.275
1.12 0.10 0.50 0.18 3.04 1.40 1.03 2.05 2.64 8 0.41 0.685
e1 H L
E H
L1 NOTE:
1. THIS PART IS COMPLIANT WITH JEDEC SPECIFICATION TO-236AB 2. DIE IS FACE UP FOR MOLD AND TRIM/FORM
e
3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
e1
D
E
c A
A1 L1 L
Doc. No. 3004, Rev. S
10
Patent Pending
CAT809, CAT810
PACKAGE INFORMATION SC-70 Package (3-Lead) Min
Inches Max
Millimeters Min Max
Plastic SC-70 (3-Pin) A A1 A2 b c 0.0315 0.0000 0.0315 0.0059 0.0035 0.0709 0.0453 0.0709 0.0433 0.0039 0.0394 0.00118 0.0071 0.0866 0.0531 0.0945 0.80 0.00 0.80 0.15 0.09 1.80 1.15 1.80 1.10 0.10 1.00 0.30 0.18 2.20 1.35 2.40
e
b
D E E1 e L
0.00255 BSC 0.0102 0.0108 0.0181 0.0226
0.65BSC 0.26 0.275 0.46 0.575
2
1 E E1 3
L1 NOTE:
1. THIS PART IS COMPLIANT WITH EIAJ SPECIFICATION SC-70 2. DIE IS FACE UP FOR MOLD. DIE IS FACING DOWN FOR TRIM/FORM 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
D
E
A2
A
c
A1
L1
L
Patent Pending
11
Doc. No. 3004, Rev. S
CAT809, CAT810 REVISION HISTORY
Date 10/29/2003 10/30/2003 3/10/2004 Rev. N O P Reason Updated VCC Transient Response text and Figure 2 Updated Power Up Reset Timeout vs. Temperature curve Corrected temperature range Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics Updated Typical Operating Characteristics Updated Package Information Changed Preliminary designation to Final Updated Max Reset Active Timout Period in Electrical Characteristics Updated package drawings Updated top marking table
03/23/2004
Q
3/25/2004
R
5/10/2004
S
Doc. No. 3004, Rev. S
12
Patent Pending
Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:
DPP TM AE2 TM
Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. For a complete list of patents issued to Catalyst Semiconductor contact the Company's corporate office at 408.542.1000.
CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.
Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete.
Catalyst Semiconductor, Inc. Corporate Headquarters 1250 Borregas Avenue Sunnyvale, CA 94089 Phone: 408.542.1000 Fax: 408.542.1200 www.catalyst-semiconductor.com
Publication #: Revison: Issue date:
3004 S 5/10/04 Patent Pending

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