H EE GEN FR ALO CAT809, CAT810 3-Pin Microprocessor Power Supply Supervisors LE A D F R E ETM FEATURES ■ Precision monitoring of ■ 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 MAX810 in applications operating over the industrial temperature range ■ Reset valid down to VCC = 1.0 V ■ 6 µA power supply current ■ Offered in two output configurations: ■ Power supply transient immunity - CAT809: Active LOW reset - CAT810: Active HIGH reset ■ Compact 3-pin SOT23 and SC70 packages ■ Industrial temperature range: -40˚C to +85˚C APPLICATIONS ■ Computers ■ Embedded control systems ■ Servers ■ White goods ■ Laptops ■ Power meters ■ Cable modems ■ Intelligent instruments ■ Wireless communications ■ 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. 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). 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 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 (-40˚C to 85˚C) and are available in compact 3-pin SOT23 and SC70 packages. PIN CONFIGURATION 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 © 2004 by Catalyst Semiconductor, Inc., Patent Pending Characteristics subject to change without notice GND 1 CAT809 (CAT810) 3 VCC RESET 2 (RESET) 3-Lead SOT23 3-Lead SC70 1 Doc. No. 3004, Rev. S CAT809, CAT810 ORDERING INFORMATION Ordering Part Number RESET Polarity Package Parts per Reel CAT809_EUR-T Push-Pull RESET 3-pin, SOT23 3k CAT809_EUR-T10 Push-Pull RESET 3-pin, SOT23 10k CAT809_TBI-T Push-Pull RESET 3-pin, SOT23 Green 3k CAT809_TBI-T10 Push-Pull RESET 3-pin, SOT23 Green 10k CAT809_EXR-T Push-Pull RESET 3-pin, SC70 3k CAT809_EXR-T10 Push-Pull RESET 3-pin, SC70 10k CAT809_SDI-T Push-Pull RESET 3-pin, SC70 Green 3k CAT809_SDI-T10 Push-Pull RESET 3-pin, SC70 Green 10k CAT810_EUR-T Push-Pull RESET 3-pin, SOT23 3k CAT810_EUR-T10 Push-Pull RESET 3-pin, SOT23 10k CAT810_TBI-T Push-Pull RESET 3-pin, SOT23 Green 3k CAT810_TBI-T10 Push-Pull RESET 3-pin, SOT23 Green 10k CAT810_EXR-T Push-Pull RESET 3-pin, SC70 3k CAT810_EXR-T10 Push-Pull RESET 3-pin, SC70 10k CAT810_SDI-T Push-Pull RESET 3-pin, SC70 Green 3k CAT810_SDI-T10 Push-Pull RESET 3-pin, SC70 Green 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 SOT23 Green SC70 SC70 Green CAT809L AAYM DBYM FA_ GA_ CAT809M ABYM DCYM FB_ GB_ CAT809J CWYM DAYM FG_ GG_ CAT809T ACYM DFYM FE_ GE_ CAT809S ADYM DEYM FD_ GD_ CAT809R AFYM DDYM FC_ GC_ CAT809Z CFYM DGYM FF_ GF_ CAT810L AGYM CKYM FH_ GH_ CAT810M AHYM CLYM FJ_ GJ_ CAT810J AIYM CJYM FP_ GP_ CAT810T AJYM CPYM FM_ GM_ CAT810S AKYM CNYM FL_ GL_ CAT810R ALYM CMYM FK_ GK_ CAT810Z CGYM CRYM FN_ 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 Name Description 1 GND Ground 2 — RESET 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. — 2 RESET 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. 3 3 VCC Power supply voltage that is monitored. CAT809 CAT810 1 Patent Pending 3 Doc. No. 3004, Rev. S CAT809, CAT810 Operating Temperature Range ........... -40°C to +85°C ABSOLUTE MAXIMUM RATINGS* Storage Temperature Range ............ -65°C to +105°C Any pin with respect to ground .......... -0.3 V to +6.0 V Lead Soldering Temperature (10 sec) .............. 300°C Input Current, VCC ............................................. 20 mA Output Current, RESET, RESET ...................... 20 mA *COMMENT Rate of Rise, VCC ............................................................. 100 V/µs 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. Continuous Power Dissipation Derate 2.2mW/˚C above 70˚C (SC70) ......... 175 mW Derate 4mW/˚C above 70˚C (SOT23) ......... 320 mW ELECTRICAL CHARACTERISTICS VCC = Full range, TA = -40°C to +85°C unless otherwise noted. Typical values at TA = +25˚C 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 Symbol VCC Range Supply Current ICC Conditions 5.5 TA = -40˚C to +85˚C 1.2 5.5 TA = -40˚C to +85˚C J Threshold Reset T Threshold VTH S Threshold R Threshold Z Threshold Doc. No. 3004, Rev. S Max 1.0 M Threshold Voltage Typ TA = 0˚C to +70˚C L Threshold Threshold Min VCC < 5.5 V, J/L/M 8 20 VCC < 3.6 V, R/S/T/Z 6 15 4.63 4.70 TA = +25˚C 4.56 TA = -40˚C to +85˚C 4.50 TA = +25˚C 4.31 TA = -40˚C to +85˚C 4.25 TA = +25˚C 3.93 TA = -40˚C to +85˚C 3.89 TA = +25˚C 3.04 TA = -40˚C to +85˚C 3.00 TA = +25˚C 2.89 TA = -40˚C to +85˚C 2.85 TA = +25˚C 2.59 TA = -40˚C to +85˚C 2.55 TA = +25˚C 2.28 TA = -40˚C to +85˚C 2.25 4 Units V µA 4.75 4.38 4.45 4.50 4.00 4.06 4.10 3.08 3.11 3.15 2.93 V 2.96 3.00 2.63 2.66 2.70 2.32 2.35 2.38 Patent Pending CAT809, CAT810 ELECTRICAL CHARACTERISTICS (continued) VCC = Full range, TA = -40˚C to +85˚C unless otherwise noted. Typical values at TA = +25˚C 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 Symbol Conditions Min Reset Threshold Tempco VCC to Reset Delay (Note 2) VCC = VTH to (VTH - 100 mV) Reset Active Timeout Period TA = -40˚C to +85˚C 140 VCC = VTH min, ISINK = 1.2 mA RESET Output Voltage Low (Push-pull, active LOW, CAT809) VOH 20 µs 240 400 VCC = VTH max, ISOURCE = 800 µA V 0.8 VCC V VCC - 1.5 VCC > VTH max, ISINK = 1.2 mA 0.3 CAT810R/S/T/Z VOL ms 0.3 CAT809R/S/T/Z CAT809J/L/M RESET Output Voltage Low (Push-pull, active HIGH, CAT810) ppm/˚C 0.4 CAT809J/L/M VCC = VTH max, ISOURCE = 500 µA Units 30 VCC = VTH min, ISINK = 3.2 mA VCC > 1.0 V, ISINK = 50 µA RESET Output Voltage High (Push-pull, active LOW, CAT809) Max 0.3 CAT809R/S/T/Z VOL Typ(1) V VCC > VTH max, ISINK = 3.2 mA 0.4 CAT810J/L/M RESET Output Voltage High (Push-pull active HIGH, CAT810) VOH 1.8 V < VCC ≤ VTH min, ISOURCE = 150 µA 0.8 VCC V Note 1: Production testing done at TA = +25˚C; 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 = -40˚C to +85˚C unless otherwise noted. Typical values at TA = +25˚C 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. SUPPLY CURRENT VS. TEMPERATURE (NO LOAD, CAT8xxR/S/T/Z) 260 12 240 SUPPLY CURRENT (µA) POWER-UP RESET TIMEOUT (mS) POWER-UP RESET TIMEOUT VS. TEMPERATURE VCC=5V 220 200 VCC=2.5V 180 VCC=5.5V 10 8 VCC=3.6V 6 4 2 0 160 -50 0 50 100 -50 150 0 TEMPERATURE (˚C) 1.0002 NORMALIZED THRESHOLD POWER-DOWN RESET DELAY (µS) 150 NORMALIZED RESET THRESHOLD VS. TEMPERATURE 14 12 10 8 6 4 2 1 0.9998 0.9996 0.9994 0.9992 0.999 0.9988 0 50 100 150 0 TEMPERATURE (˚C) Doc. No. 3004, Rev. S 100 TEMPERATURE (˚C) POWER-DOWN RESET DELAY VS. TEMPERATURE (CAT8xxR/S/T/Z) 0 -50 50 20 40 60 80 100 120 TEMPERATURE (˚C) 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. Threshold Voltage Power 5V Supply Voltage 0V RESET Reset Timeout Period 140ms minimum 5V CAT809 0V 5V RESET CAT810 0V FIGURE 1. RESET TIMING DIAGRAM VCC TRANSIENT RESPONSE The CAT809/810 protect µPs against brownout failure. Short duration transients of 4µsec 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). TRANSIENT DURATION [µs) 30 TAMB = 25°C 25 20 15 CAT809Z 10 5 CAT809M 0 1 10 100 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 kΩ 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 Power Supply VCC VCC CAT810 CAT809 100kΩ RESET RESET 100kΩ GND GND 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 µP/µC bi-directional reset pins by connecting a 4.7 kΩ resistor in series with the CAT809/810 reset output and the µP/µC bi-directional reset pin. BUF Power Supply Buffered RESET VCC CAT809 µP 4.7kΩ RESET INPUT RESET (For example: 68HC11) GND GND Bi-directional I/O Pin FIGURE 5. Bi-directional Reset Pin Interfacing Doc. No. 3004, Rev. S 8 Patent Pending CAT809, CAT810 OTHER SUPERVISORY PRODUCTS Function CAT1161/3 CAT1162 CAT809 CAT810 CAT811 8-pin DIP and SOIC 8-pin DIP and SOIC 3-pin SOT23 and SC70 3-pin SOT23 and SC70 4-pin SOT143 CAT812 With 16k Bit Serial EEPROM Memory Watchdog Timer Manual Reset Input Active Low Reset Active High Reset Dual Polarity Reset Outputs Package Patent Pending 9 4-pin SOT143 Doc. No. 3004, Rev. S CAT809, CAT810 PACKAGE INFORMATION Inches Plastic SOT-23 (3-Pin) Min Millimeters Max Min Max Plastic SOT-23 (3-Pin) B E H A 0.0350 0.0441 0.89 1.12 A1 0.0005 0.0039 0.013 0.10 B 0.0146 0.0197 0.37 0.50 c 0.0033 0.0071 0.085 0.18 D 0.1102 0.1197 2.80 3.04 E 0.0472 0.0551 1.20 1.40 e 0.0350 0.0406 0.89 1.03 e1 0.0701 0.0807 1.78 2.05 H 0.0827 0.1039 2.10 2.64 ∝ 0° 8° 0° 8° L 0.0083 0.0161 0.275 0.41 L1 0.0160 0.0270 0.275 0.685 NOTE: 1. THIS PART IS COMPLIANT WITH JEDEC SPECIFICATION TO-236AB 2. DIE IS FACE UP FOR MOLD AND TRIM/FORM 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR e e1 D E c A ∝ A1 L1 Doc. No. 3004, Rev. S 10 L Patent Pending CAT809, CAT810 PACKAGE INFORMATION Inches SC-70 Package (3-Lead) Min Millimeters Max Min Max Plastic SC-70 (3-Pin) e b A 0.0315 0.0433 0.80 1.10 A1 0.0000 0.0039 0.00 0.10 A2 0.0315 0.0394 0.80 1.00 b 0.0059 0.00118 0.15 0.30 c 0.0035 0.0071 0.09 0.18 D 0.0709 0.0866 1.80 2.20 E 0.0453 0.0531 1.15 1.35 E1 0.0709 0.0945 1.80 2.40 e 2 1 E 0.00255 BSC 0.65BSC L 0.0102 0.0181 0.26 0.46 L1 0.0108 0.0226 0.275 0.575 NOTE: 1. THIS PART IS COMPLIANT WITH EIAJ SPECIFICATION SC-70 E1 3 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 Patent Pending L1 11 L Doc. No. 3004, Rev. S CAT809, CAT810 REVISION HISTORY Date 10/29/2003 Rev. N 10/30/2003 3/10/2004 O P Updated Power Up Reset Timeout vs. Temperature curve Corrected temperature range Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics 03/23/2004 Q 3/25/2004 R 5/10/2004 S 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 Doc. No. 3004, Rev. S Reason Updated VCC Transient Response text and Figure 2 12 Patent Pending Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ AE2 ™ 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