DS1705EPA

Supervisors Overview

The DS1705EPA+ is a supervisory circuit from the DS1705 series, manufactured by Analog Devices Inc. (Maxim Integrated). It functions as a MicroMonitor for microprocessors, monitoring power supply voltage and software execution. The device operates within a supply voltage range of 1.2 V to 5.5 V and features a threshold voltage of 5 V with 10% accuracy. It includes an integrated watchdog timer and generates a reset signal after a delay of 205 ms upon power failure detection. The component supports active high and active low outputs without manual reset or battery backup switching. It is housed in an 8-pin PDIP package and operates across an industrial temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Monitors three vital conditions: power supply status, software execution via watchdog, and external override capabilities.
• Generates non-maskable interrupts when sense inputs detect out-of-tolerance voltage conditions at the device or upstream points.
• Maintains the reset signal in an active state for a minimum duration to allow power supply and processor stabilization during power transients.

Supervisors Applications

• Microprocessor system supervision
• Power management in embedded systems
• Industrial control units requiring voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix 'EPA' confirms the PDIP-8 through-hole package variant. Confirm RoHS compliance status directly with the manufacturer documentation. Check current lifecycle status as some DS1705 variants may be discontinued or subject to limited supply constraints. Ensure the operating temperature range meets the specific environmental requirements of the target application design.

Supervisors Selection Notes

Select this component when a through-hole PDIP-8 package is required for board layout compatibility. Choose this part if the application demands a 10% accuracy threshold for 5V systems. Consider the 60 uA quiescent current for low-power standby modes. Verify that the 205 ms reset delay aligns with the system's startup timing requirements compared to other available supervisory circuits.

Supervisors Part Context

The DS1705EPA+ belongs to the DS1705/DS1706 MicroMonitor family designed by Maxim Integrated. These devices are pin-compatible with older MAXIM MAX705/MAX706 equivalents. The series eliminates discrete components for voltage monitoring and reset generation. The EPA suffix specifically denotes the plastic dual-in-line package option within the broader DS1705 product line.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided source data. Cross-reference tools should be consulted for parametrically similar parts if direct substitution is required.