ILC803 IMPALA | Alldatasheet

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Technical content

µµP VCC VCC VCC RESET RESET INPUT(RESET) ( ) = ILC810 The ILC803, ILC809 and ILC810 are low cost microproces- sor supervisory circuits that assert a reset if the power sup- ply drops below a designated threshold. Several different reset thresholds are available to accommodate systems operating at 3V, 3.3V or 5V. The ILC803 has an open drain output stage with active low RESET output The ILC809 has an active low RESET output, while the ILC810 offers an active high RESET output. The reset output is guaranteed to remain asserted for a minimum of 140ms after V CC has risen above the des- ignated reset threshold. The ILC803, ILC809 and ILC810 are available in either a 3-Pin SOT-23 pack- age or a 3-Pin SC-70 packages. ILC803/ILC809/ILC810 3-Pin µP Voltage Monitor Impala Linear Corporation Impala Linear Corporation 1(408) 574-3939 www.impalalinear.com Sept 1999 ILC803/809/810 1.5 Preliminary Temp. Range -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C

  • Precision Voltage Monitor for 3V, 3.3V or 5V Power Supplies
  • 6 µA Supply Current
  • 140ms Minimum Reset Pulse Width
  • RESET Remains Valid with V CC as Low as 1.4V
  • Active Low Manual Reset Input
  • No External Components
  • 3-Pin SOT-23 Package
  • 3-Pin SC-70 package option
  • Critical Microprocessor Power Monitoring
  • Portable Equipment
  • Intelligent Instruments
  • Computers & Printers, Controllers ILC803 ILC809 VCC Top View RESET GND

3 ILC810 VCC

Reset Threshold Voltage (V) Device Suffix 4.63 L 4.38 M 4.00 J 3.08 T 2.93 S 2.63 R

Ordering Information

ILC803_U ILC809_U ILC810_U ILC803_W ILC809_W ILC810_W Package 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC-70 3-Lead SC-70 3-Lead SC-70 General Description Package Features

Applications

Pin Package Configurations SC-70 SOT-23 Place the device suffix of the desired reset threshold voltage from the table [below] in the blank to complete the part number.

VCC = 5V for ILC8__L/M/J, VCC = 3.3V for ILC8__S/T, VCC = 3V for ILC8__R, TA = Operating Temperature Range, unless otherwise noted. Parameter Conditions Min Typ Max Units Operating Voltage Range, VCC TA = 0°C to 70°C TA = -40°C to 85°C 1.4 1.6 5.5 5.5 V Supply Current, ICC ILC803L/M/J, ILC809L/M/J, ILC810L/M/J VCC < 3.6V, ILC803R/S/T, ILC809R/S/T, ILC810R/S/T µA Reset Voltage Threshold, VTH ILC803L, ILC809L, ILC810L ILC803M, ILC809M, ILC810M ILC803J, ILC809J, ILC810J ILC803T, ILC809T, ILC810T ILC803S, ILC809S, ILC810S ILC803R, ILC809R, ILC810R 4.50 4.25 3.89 3.00 2.85 2.55 4.63 4.38 4.00 3.08 2.93 2.63 4.75 4.50 4.10 3.15 3.00 2.70 V Reset Timeout Period, tR 140 240 560 ms VCC = VTH ISINK = 1.2mA 0.3 V RESET Output Voltage Low (Active low ILC803 & 809) VOL VCC =VTH ISINK = 3.2mA 0.4 V RESET Open Drain Output Leakage Current VCC > VTH RESET Deasserted 7 µA RESET Output Voltage VOH ISOURCE = 800 µA, ILC809L/M/J ISOURCE = 500 µA, ILC809R/S/T VCC – 1.5 0.8 x VCC V RESET Output Voltage, VOL VCC = VTH Min., ISINK = 3.2 mA, ILC809L/M/J VCC = VTH Min., ISINK = 1.2 mA, ILC809R/S/T VCC > 1.4 V, ISINK = 50 µA, TA = 0°C to 70°C VCC > 1.6 V, ISINK = 50 µA, TA = -40°C to 85°C 0.4 0.3 0.3 0.3 V RESET Output Voltage, VOH 1.8V < VCC < VTH Min., ISOURCE = 150 µA 0.8 x VCC V RESET Output Voltage, VOL ISINK = 3.2mA, ILC810L/M/J ISINK = 1.2mA, ILC810R/S/T 0.4 0.3 V 3-Pin µP Voltage Monitor Impala Linear Corporation 2(408) 574-3939 www.impalalinear.com Sept 1999 ILC803/809/810 1.5 Preliminary Parameter Symbol Ratings Units Terminal Voltage VCC -0.3 to 6.0 V Input Current VCC 20 mA Output Current RESET, RESET 20 mA Rate of Rise VCC 100 V/µs Operating Temperature Range TA -40 to +85 °C Storage Temperature Range -65 to +150 °C Lead Temperature (Soldering, 10 sec.) 300 °C Power Dissipation (TA = +70°C) 320 mW Stresses above those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent device failure. Functionality at or above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliabil- ity. Operating ranges define those limits between which the functionality of the device is guaranteed. Pin Number Pin Name ILC803 ILC809 ILC810 Description GND 1 1 1 Ground Pin. RESET 2 2 N/A RESET goes low if VCC falls below the reset threshold and remains asserted for one reset timeout period (140ms min.) after VCC exceeds the reset threshold. RESET N/A N/A 2 RESET goes high if VCC falls below the reset threshold and remains asserted for one reset timeout period (140ms min.) after V CC exceeds the reset threshold. VCC 4 3 3 Power supply input, 3 V, 3.3 V or 5 V. Absolute Maximum Ratings

Electrical Characteristics

3-Pin µP Voltage Monitor Impala Linear Corporation 3(408) 574-3939 www.impalalinear.com Sept 1999 ILC803/809/810 1.5 Preliminary VCC Transients The ILC803, ILC809 and ILC810 are relatively immune to negative-going V CC glitches below the reset threshold. Typically, a negative-going transient 125mV below the reset threshold with a duration of 50µs (25µs for ILC8__R/S/T) or less will not cause an unwanted reset. Interfacing to Bi-directional Reset Pins The ILC803/ILC809/ILC810 can interface with µPs with bi- directional reset pins by connecting a 4.7k Ω resistor in series with the ILC803/ILC809/ILC810 output and the mP reset pin. ILC803 connects directly with a single pull-up resistor (figure 2). RESET Valid to 0V A resistor can be added from the RESET pin to ground to ensure the RESET output remains low with V CC down to 0V. A 100kΩ resistor connected from RESET to ground is recommended. The size of the resistor should be large enough to not load the RESET output and small enough to pull-down any stray leakage currents. ILC803 ILC809 µP VCC VCC VCC RESET RESET 100K ILC803 only 100K ILC809 only Industry P/N ILC Direct Replacement MAX803XYUR-T ILC803YU MAX809JEUR-T ILC809JU MAX809LEUR-T ILC809LU MAX809MEUR-T ILC809MU MAX809REUR-T ILC809RU MAX809SEUR-T ILC809SU MAX809TEUR-T ILC809TU MAX810JEUR-T ILC810JU MAX810LEUR-T ILC810LU MAX810MEUR-T ILC810MU MAX810REUR-T ILC810RU MAX810SEUR-T ILC810SU MAX810TEUR-T ILC810TU SC-70 Case SOT-23 Case ILC803J QJY QJYY ILC803L QLY QLYY ILC803M QMY QMYY ILC803R QRY QRYY ILC803S QSY QSYY ILC803T QTY QTYY ILC809J VJY VJYY ILC809L VLY VLYY ILC809M VMY VMYY ILC809R VRY VRYY ILC809S VSY VSYY ILC809T VTY VTYY ILC810J ZJY ZJYY ILC810L ZCY ZCYY ILC810M ZMY ZMYY ILC810R ZRY ZRYY ILC810S ZSY ZSYY ILC810T ZTY ZTYY Y-LOT CODE YY-LOT CODE

3 Reset

Threshold (V) VCC RESET (ILC803, ILC809 RESET (ILC810) GND VTHVCC tR RESET tR Microprocessor Reset The RESET pin is asserted whenever V CC falls below the reset threshold voltage. The reset pin remains asserted for a period of 240ms after V CC has risen above the reset threshold voltage. The reset function ensures the micro- processor is properly reset and powers up into a known condition after a power failure. RESET will remain valid with V CC as low as 1.4V. Figure 1: Timing Diagram Figure 2: Reset valid to V CC Figure 3: Block Diagram Circuit Description Alternate Source Cross Reference Guide Device Markings Information

3-Pin µP Voltage Monitor Impala Linear Corporation 4(408) 574-3939 www.impalalinear.com Sept 1999 ILC803/809/810 1.5 Preliminary 0.120 0.105 0.079 0.071 0.004 0.001 0.040 0.031 0.021 0.015 0.055 0.047 0.098 0.083 0.010 0.005 0.0059 0.0035 0-8° Packaging Information .053 .045 .087 .079 .043 .032 .004 .018 .006 .010 .004 .009 .005 .026 .051 .016 .012 .087 .071 W Package, 3-Pin SC-70 Dimensions are in inches U Package, 3-Pin SOT-23 Dimensions are in inches

3-Pin µP Voltage Monitor Impala Linear Corporation 5(408) 574-3939 www.impalalinear.com Sept 1999 ILC803/809/810 1.5 Preliminary Devices sold by Impala Linear Corporation are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Impala Linear Corporation makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Impala Linear Corporation makes no warranty of merchantability or fitness for any purpose. Impala Linear Corporation reserves the right to discontinue production and change specifications and prices at any time and without notice. This product is intended for use in normal commercial applications. Applications requiring an extended temperature range, unusual environmental requirements, or high reliability applications, such as military and aerospace, are specif- ically not recommended without additional processing by Impala Linear Corporation. Impala Linear Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an Impala Linear Corporation product. No other circuits, patents, licenses are implied. Life Support Policy Impala Linear Corporation’s products are not authorized for use as critical components in life support devices or systems. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labelling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reason- ably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. O1.5 ± 0.1 3.5 ± 0.05 8.0 ± 0.3 1.75 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 4.0 ± 0.1 O1.1 ± 0.1 3.1 ± 0.1 1.2 ± 0.1 2.7 ± 0.1 Dimensions are in millimeters Tape and Reel Information Diagram applies to SOT-23 and SC-70