MAX703ESA+ Maxim Integrated Products, MAX703ESA+ Datasheet
MAX703ESA+
Specifications of MAX703ESA+
Related parts for MAX703ESA+
MAX703ESA+ Summary of contents
Page 1
... MAX704 V BATT V MR OUT GND PUSHBUTTON SWITCH ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Circuits with Battery Backup ♦ Battery-Backup Power Switching ♦ Precision Supply-Voltage Monitor 4.65V (MAX703) 4.40V (MAX704) ♦ ...
Page 2
Low-Cost Microprocessor Supervisory Circuits with Battery Backup ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) V ....................................................................-0.3V to +6. .................................................................-0.3V to +6.0V BATT All Other Inputs (Note 1).........................-0. Input Current V ...............................................................................200mA CC V ..............................................................................50mA ...
Page 3
Low-Cost Microprocessor Supervisory ELECTRICAL CHARACTERISTICS (continued +4.75V to +5.5V for MAX703 PARAMETER SYMBOL Input Threshold Pulse Width RESET Delay Pullup Current PFI ...
Page 4
Low-Cost Microprocessor Supervisory Circuits with Battery Backup PIN NAME Supply Output for CMOS RAM. When OUT channel MOSFET switch. When +5V Supply Input CC 3 GND Ground Power-Fail Comparator Input. When PFI is less ...
Page 5
Low-Cost Microprocessor Supervisory Detailed Description A µP’s reset input starts the µ known state. Whenever the µ unknown state, it should be held in reset. The MAX703/MAX704 assert reset when V is low, preventing code-execution ...
Page 6
Low-Cost Microprocessor Supervisory Circuits with Battery Backup drops to more than 1V below V switchover comparator shuts off and the supply current falls to less than 1µA. The manual reset input (MR) allows RESET to be acti- vated by a ...
Page 7
Low-Cost Microprocessor Supervisory Ensuring a Valid RESET Output Down to V falls below 1V, the MAX703/MAX704 RESET When V CC output no longer sinks current; it becomes an open cir- cuit. High-impedance CMOS logic inputs can drift to undetermined voltages ...
Page 8
Low-Cost Microprocessor Supervisory Circuits with Battery Backup Using the Power-Fail Comparator In addition to asserting reset at the V voltage, reset can also be asserted at the PFI input threshold voltage. Connect PFO initiate a reset Table ...
Page 9
... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 © 2005 Maxim Integrated Products ...