DS1233A-15+T&R

Supervisors Overview

The DS1233A-15+T&R is a voltage supervisory circuit from the EconoReset series, manufactured by Analog Devices Inc. (Maxim Integrated). It features a single monitored input with an active low output available in open drain or push-pull configurations. The device operates within a supply voltage range of 1.2 V to 3.3 V and includes power-fail detection capabilities. Key electrical parameters include a threshold voltage of 4.125 V, an overvoltage threshold of 2.8 V, and a reset delay time of 350 ms. The accuracy is specified at 15%, with a typical operating current of 50 uA. It supports through-hole mounting in a TO-92-3 package and functions across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides automatic system reset upon power-up or voltage drop below the specified threshold
• Integrates power-fail signal generation for monitoring supply integrity
• Offers flexible output drive options including open drain and push-pull modes
• Designed for low-power applications with minimal operating current consumption

Supervisors Applications

• Microprocessor and microcontroller power supply supervision
• Battery-operated electronic devices requiring voltage monitoring
• Industrial control systems needing reliable power-fail detection
• Embedded systems utilizing 3.3V logic levels

Supervisors Procurement Notes

Verify the specific suffix T&R indicates tape and reel packaging when ordering. Confirm the manufacturer part number matches exactly as DS1233A-15+T&R to ensure correct variant selection. Check regional availability restrictions as some distributors may limit sales in certain areas. Ensure compatibility with existing PCB footprints for TO-92-3 packages if replacing through-hole components.

Supervisors Selection Notes

Select this component when a fixed threshold voltage near 4.125 V is required for system reset timing. Consider the 350 ms reset delay for appropriate startup sequencing of connected logic. Evaluate the 15% accuracy tolerance against system voltage margins. Choose between open drain and push-pull outputs based on downstream interface requirements and pull-up resistor availability.

Supervisors Part Context

This part belongs to the DS1233A family of simple reset circuits designed for cost-sensitive applications. It complements other variants like the DS1233A-10+ which offers different accuracy and threshold specifications. The series provides basic supervision without complex features like watchdog timers or manual resets, focusing on essential power monitoring functions.

Supervisors Replacement Considerations

Direct substitutes include DS1233A-10+ for similar functionality with different accuracy specs. Cross-reference with DS1233Z-15+ for surface mount alternatives in SOT-223 packages. Verify pinout compatibility and thermal characteristics when transitioning between package types.