MAX4821ETP+T

Overview

The MAX4821ETP+T is an eight-channel cascade relay driver manufactured by Analog Devices Inc./Maxim Integrated. It features a single input to eight output configuration with N-channel outputs capable of sourcing up to 70mA per channel. The device operates within a load voltage range of 2.3V to 5.5V and utilizes an SPI interface for control. Packaged in a 20-TQFN (4x4) surface-mount enclosure, it supports operating temperatures from -40°C to +85°C.

Feature Summary

• Integrates eight independent N-channel power switches for relay or solenoid actuation
• Utilizes serial peripheral interface (SPI) for digital control and status feedback
• Supports cascaded operation for driving multiple channels from a single input signal

Applications

• Industrial automation relay control systems
• Telecommunications switching equipment
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix 'ETP' corresponds to the 20-TQFN package and tape-and-reel shipping format. Confirm RoHS compliance status through official documentation. Ensure the supplier provides valid traceability for the Analog Devices/Maxim Integrated brand. Cross-reference the manufacturer part number against current availability lists as supply conditions may vary.

Selection Notes

Select this component when an application requires controlling multiple low-power loads such as relays or solenoids from a microcontroller via SPI. The 70mA output current per channel is suitable for standard industrial relay coils. Consider the 20-TQFN footprint for space-constrained PCB designs requiring surface-mount assembly.

Part Context

This device belongs to the MAX482x series of power drivers designed for high-density switching applications. It consolidates multiple discrete driver circuits into a single integrated solution, reducing board space and simplifying design complexity compared to using individual transistors or driver ICs for each channel.

Replacement Considerations

MAX4823ETP+T