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MAX4821EUP+T
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Product Detailed Parameters
- Description：IC PWR DRIVER N-CHAN 1:8 20TSSOP
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Type：Relay, Solenoid Driver
- Number of Outputs：8
- Ratio - Input:Output：1:08
- Output Configuration：Low Side
- Output Type：N-Channel
- Interface：Parallel, Serial
- Voltage - Load：2.3V ~ 5.5V
- Voltage - Supply (Vcc/Vdd)：-
- Current - Output (Max)：70mA
- Rds On (Typ)：2Ohm
- Input Type：-
- Features：-
- Fault Protection：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-TSSOP-EP
- Package / Case：20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Grade：-
- Qualification：-
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Overview
The MAX4821EUP+T is an 8-channel relay driver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a voltage range of 2.3V to 5.5V and features a maximum output current of 70mA per channel. The device supports both serial and parallel interfaces for control. It is housed in a 20-TSSOP-EP package and functions as a low-side N-channel switch with a typical on-resistance of 2 Ohms. The component is designed for operation across a temperature range of -40°C to +85°C.
Feature Summary
- Integrates eight independent low-side N-channel relay drivers in a single compact package.
- Supports flexible control through selectable serial or parallel interface configurations.
- Provides cascadable architecture capability for expanding channel counts in system designs.
Applications
- Industrial automation systems requiring multi-channel relay switching
- Test and measurement equipment needing precise signal routing
- Telecommunications infrastructure utilizing relay-based switching matrices
Procurement Notes
Verify the specific suffix designation (+T) to confirm tape-and-reel packaging requirements against your assembly line specifications. Ensure the operating voltage range aligns with your system's power supply rails. Confirm that the thermal performance of the exposed pad package meets your PCB layout thermal dissipation needs for continuous operation.
Selection Notes
Select this component when an application requires driving multiple relays from a microcontroller using limited I/O pins via serial communication. Consider the 2 Ohm on-resistance impact on load voltage drop. Evaluate the 70mA output limit against the coil current requirements of the target relays to ensure reliable actuation without exceeding device ratings.
Part Context
This part belongs to the MAX4820/MAX4821 family of gate drivers designed for high-density relay control applications. It replaces discrete transistor solutions, reducing board space and complexity. The series is optimized for industrial environments where reliable switching and robust interface options are critical for long-term system stability.
Replacement Considerations
The MAX4820EUP+T is a documented substitute within the same product family, offering similar functionality with potential differences in pinout or feature sets that require schematic review before implementation.
