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Part: MAX6316MUK41BW-T
Category:
Power Management
-> Supervisory Circuits
-> Microprocessor Supervisors
Description: MAX6316, MAX6317, MAX6318, MAX6319, MAX6320, MAX6321, MAX6322 5-Pin µP Supervisory Circuits With Watchdog And Manual Reset
Company: Maxim Integrated Products
Datasheet: Download MAX6316MUK41BW-T datasheet File size : 384 kB
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Datasheet text preview:
19-0496; Rev 5; 9/02
5-Pin µP Supervisory Circuits with Watchdog and Manual Reset
________________General Description
The MAX6316MAX6322 family of microprocessor (µP) s u p e r v i s o r y circuits monitors power supplies and microprocessor activity in digital systems. It offers several combinations of push/pull, open-drain, and bidirectional (such as Motorola 68HC11) reset outputs, along with watchdog and manual reset features. The Selector Guide below lists the specific functions available from each device. These devices are specifically designed to ignore fast negative transients on VCC. Resets are guaranteed valid for VCC down to 1V. These devices are available in 26 factory-trimmed reset threshold voltages (from 2.5V to 5V, in 100mV increments), featuring four minimum power-on reset timeout periods (from 1ms to 1.12s), and four watchdog timeout periods (from 6.3ms to 25.6s). Thirteen standard versions are available with an order increment requirement of 2500 pieces (see Standard Versions table); contact the factory for availability of other versions, which have an order increment requirement of 10,000 pieces. T h e MAX6316MAX6322 are offered in a miniature 5-pin SOT23 package.
____________________________Features
o Small 5-Pin SOT23 Package o Available in 26 Reset Threshold Voltages 2.5V to 5V, in 100mV Increments o Four Reset Timeout Periods 1ms, 20ms, 140ms, or 1.12s (min) o Four Watchdog Timeout Periods 6.3ms, 102ms, 1.6s, or 25.6s (typ) o Four Reset Output Stages Active-High, Push/Pull Active-Low, Push/Pull Active-Low, Open-Drain Active-Low, Bidirectional o Guaranteed Reset Valid to VCC = 1V o Immune to Short Negative VCC Transients o Low Cost o No External Components
MAX6316MAX6322
_______________Ordering Information
PART MAX6316LUK_ _ _ _ -T MAX6316MUK_ _ _ _ -T MAX6317HUK_ _ _ _ -T MAX6318HUK_ _ _ _ -T MAX6318MHUK_ _ _ _ -T 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 PIN-PACKAGE 5 SOT23-5 5 SOT23-5 5 SOT23-5 5 SOT23-5 5 SOT23-5
________________________Applications
Portable Computers Computers Controllers Intelligent Instruments Portable/Battery-Powered Equipment Embedded Control Systems
Ordering Information continued at end of data sheet. Typical Operating Circuit and Pin Configurations appear at end of data sheet.
___________________________________________________________________Selector Guide
PART MAX6316L MAX6316M MAX6317H MAX6318LH MAX6318MH MAX6319LH MAX6319MH MAX6320P MAX6321HP MAX6322HP WATCHDOG INPUT -- -- -- MANUAL RESET INPUT -- -- -- RESET OUTPUTS* ACTIVE-LOW PUSH/PULL -- -- -- -- -- -- -- ACTIVE-HIGH PUSH/PULL -- -- -- ACTIVE-LOW BIDIRECTIONAL -- -- -- -- -- -- -- ACTIVE-LOW OPEN-DRAIN -- -- -- -- -- -- --
* The MAX6318/MAX6319/MAX6321/MAX6322 feature two types of reset output on each device.
________________________________________________________________ Maxim Integrated Products
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For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
5-Pin µP Supervisory Circuits with Watchdog and Manual Reset MAX6316MAX6322
ABSOLUTE MAXIMUM RATINGS
Voltage (with respect to GND) VCC....-0.3V to +6V RESET (MAX6320/MAX6321/MAX6322 only)...... -0.3V to +6V All Other Pins........-0.3V to (VCC + 0.3V) Input/Output Current, All Pins ............20mA Continuous Power Dissipation (TA = +70°C) SOT23-5 (derate 7.1mW/°C above +70°C)......571mW Operating Temperature Range....-40°C to +85°C Junction Temperature ......+150°C Storage Temperature Range......-65°C to +160°C Lead Temperature (soldering, 10s) .........+300°C
Stresses beyond 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 beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = 2.5V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER Operating Voltage Range SYMBOL VCC CONDITIONS TA = -40°C to +85°C MAX6316/MAX6317/MAX 6318/MAX6320/MAX6321 Supply Current ICC MAX6319/MAX6322: MR unconnected VCC = 5.5V VCC = 3.6V VCC = 5.5V VCC = 3.6V MIN 1.0 10 5 3 3 40 TA = +25°C TA = -40°C to +85°C MAX63_ _ A_-T Reset Active Timeout Period tRP MAX63_ _ B_-T MAX63_ _ C_-T MAX63_ _ D_-T VCC to RESET Delay tRD VCC falling at 1mV/µs VCC 1.0V, ISINK = 50µA VOL RESET Output Voltage VOH RESET Rise Time (MAX6316L, MAX6318LH, MAX6319LH) tR VOL RESET Output Voltage VOH VCC 1.2V, ISINK = 100µA VCC 2.7V, ISINK = 1.2mA VCC 4.5V, ISINK = 3.2mA VCC 2.7V, ISOURCE = 500µA VCC 4.5V, ISOURCE = 800µA Rise time is measured from 10% to 90% of VCC; CL = 5pF, VCC = 3.3V (Note 3) VCC 2.7V, ISINK = 1.2mA VCC 4.5V, ISINK = 3.2mA VCC 1.8V, ISOURCE = 150µA VCC 2.7V, ISOURCE = 500µA VCC 4.5V, ISOURCE = 800µA 0.8 x VCC 0.8 x VCC VCC - 1.5 0.8 x VCC VCC - 1.5 5 25 0.3 0.4 V ns VTH - 1.5% VTH - 2.5% 1 20 140 1120 VTH VTH 3 1.4 28 200 1600 40 0.3 0.3 0.3 0.4 V 2 40 280 2240 µs ms VTH + 1.5% VTH + 2.5% TYP MAX 5.5 20 12 12 8 ppm/°C V mV µA UNITS V
Reset Threshold Temperature Coefficient Reset Threshold (Note 2) Reset Threshold Hysteresis
VTH/°C V RST
PUSH/PULL RESET OUTPUT (MAX6316L/MAX6317H/MAX6318_H/MAX6319_H/MAX6321HP/MAX6322HP)
Note 1: Over-temperature limits are guaranteed by design, not production tested. Note 2: A factory-trimmed voltage divider programs the nominal reset threshold (VTH). Factory-trimmed reset thresholds are available in 100mV increments from 2.5V to 5V (see Table 1 at end of data sheet). Note 3: Guaranteed by design. 2 _______________________________________________________________________________________
5-Pin µP Supervisory Circuits with Watchdog and Manual Reset
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 2.5V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP 400 333 333 666 666 0.4 4.2 0.65 20 4.7 5.2 0.3 0.3 0.3 0.4 1.0 µA V V mA k ns MAX UNITS ns BIDIRECTIONAL RESET OUTPUT (MAX6316M/MAX6318MH/MAX6319MH) Transition Flip-Flop Setup Time tS (Note 4) VCC = 3.0V, CL = 120pF RESET Output Rise Time (Note 5) Active Pullup Enable Threshold RESET Active Pullup Current RESET Pullup Resistance OPEN-DRAIN RESET OUTPUT (MAX6320P/MAX6321HP/MAX6322HP) VCC 1.0V, ISINK = 50µA RESET Output Voltage VOL VCC 1.2V, ISINK = 100µA VCC 2.7V, ISINK = 1.2mA VCC 4.5V, ISINK = 3.2mA Open-Drain Reset Output Leakage Current ILKG tR VCC = 5.0V, CL = 200pF VCC = 3.0V, CL = 250pF VCC = 5.0V, CL = 400pF VPTH VCC = 5.0V VCC = 5.0V
MAX6316MAX6322
WATCHDOG INPUT (MAX6316/MAX6317H/MAX6318_H/MAX6320P/MAX6321HP) MAX63_ _ _ W-T Watchdog Timeout Period tWD MAX63_ _ _ X-T MAX63_ _ _ Y-T MAX63_ _ _ Z-T WDI Pulse Width WDI Input Threshold WDI Input Current (Note 7) tWDI VIL VIH IWDI VIL = 0.3 x VCC, VIH = 0.7 x VCC (Note 6) WDI = VCC, time average VWDI = 0, time average -20 0.8 2.0 0.3 x VCC 0.7 x VCC 1 100 35 VCC = 5V 52 230 75 µs ns k ns V 4.3 71 1.12 17.9 50 0.3 x VCC 0.7 x VCC 120 -15 160 6.3 102 1.6 25.6 9.3 153 2.4 38.4 ms s ns V µA
MANUAL RESET INPUT (MAX6316_/MAX6317H/MAX6319_H/MAX6320P/MAX6322HP) VIL MR Input Threshold VIH VIL VIH MR Input Pulse Width MR Glitch Rejection MR Pullup Resistance MR to Reset Delay Note 4: Note 5: Note 6: Note 7: VTH > 4.0V VTH < 4.0V
This is the minimum time RESET must be held low by an external pulldown source to set the active pullup flip-flop. Measured from RESET VOL to (0.8 x VCC), RLOAD = . WDI is internally serviced within the watchdog period if WDI is left unconnected. The WDI input current is specified as the average input current when the WDI input is driven high or low. The WDI input is designed for a three-stated-output device with a 10µA maximum leakage current and capable of driving a maximum capacitive load of 200pF. The three-state device must be able to source and sink at least 200µA when active.
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