DS1818-5+ Equivalent & Substitute Parts

Part Overview

The DS1818-5+ is a single-channel supervisor IC manufactured by Analog Devices Inc./Maxim Integrated, part of the EconoReset series. This device functions as a simple reset/power-on reset controller with open drain or open collector output, designed for monitoring power supply voltages in embedded systems and industrial applications. The part is currently in active production status with 2200 units available in new original stock. Finding equivalent substitute parts is necessary when primary inventory is unavailable or when design flexibility across compatible alternatives is required for supply chain optimization.

Substiute Parts

DS1818-5+

Analog Devices Inc./Maxim IntegratedIn Stock: 2266DS1818-5+ Datasheet

Current PartRFQ

DS1818-5+

Analog Devices Inc./Maxim IntegratedIn Stock: 2266DS1818-5+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the DS1818-5+ is determined by the following critical parameters:

• Voltage Threshold (3.06V): The monitoring threshold must match exactly to ensure proper reset triggering at the intended supply voltage level.
• Output Configuration (Open Drain or Open Collector): The output type must be identical to maintain circuit compatibility with existing pull-up resistor networks.
• Reset Logic (Active Low): The reset signal polarity must remain active low to ensure correct system behavior.
• Reset Timeout (100ms Minimum): The minimum timeout specification must be met or exceeded to provide adequate power supply stabilization time.
• Operating Temperature Range (-40°C ~ 85°C): The temperature range must encompass or exceed the application's operating environment.
• Package / Case (TO-92-3): The physical package must be identical for through-hole PCB compatibility.
• Compliance Standards (ROHS3, REACH Unaffected): Regulatory compliance must be maintained for the target market.

Based on the provided input data, the DS1818-5+ is listed as its own direct substitute with identical specifications across all parameters.

Parameter Comparison

Engineering Selection Recommendations

The DS1818-5+ maintains active production status with confirmed inventory availability. The part is fully compliant with ROHS3 and REACH regulations, making it suitable for applications requiring environmental compliance. The MSL rating of 1 (Unlimited) indicates minimal moisture sensitivity, reducing handling and storage constraints during manufacturing and assembly processes.

When selecting this supervisor IC, confirm that the 3.06V threshold voltage aligns with your power supply monitoring requirements. Verify that the TO-92-3 through-hole package is compatible with your PCB design and assembly process. The active low reset output requires appropriate pull-up resistor configuration in your circuit design.

Frequently Asked Questions (FAQ)

Q: Can I substitute the DS1818-5+ with a different voltage threshold variant? A: No. The voltage threshold is a critical parameter that determines when the reset signal is triggered. Substitution is only valid with parts having identical 3.06V threshold specifications.

Q: Is the TO-92-3 package interchangeable with other package types? A: No. The TO-92-3 through-hole package is specific to this device. Surface-mount or other package variants would require PCB redesign and are not considered direct substitutes.

Q: What does the active low reset output mean for my circuit design? A: The reset signal is normally high and transitions to low when a reset condition is detected. Your circuit must be designed to respond to a low-level signal on the reset output pin, typically with appropriate pull-up resistor configuration.

Q: Does the 100ms minimum reset timeout affect my application? A: The 100ms timeout ensures the power supply has stabilized before the reset signal is released. This is a minimum specification; longer timeouts are acceptable if your application requires additional stabilization time.

Q: Are there any storage or handling requirements for this part? A: The MSL rating of 1 (Unlimited) indicates this part has minimal moisture sensitivity. Standard ESD precautions and normal component storage conditions are sufficient.

Q: Is this part suitable for industrial temperature applications? A: The operating temperature range of -40°C to 85°C covers industrial and extended commercial temperature requirements. Verify that your specific application falls within this range.