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MAX4821 - +3.3V/+5V / 8-Channel / Cascadable Relay Drivers

Download the MAX4821 datasheet PDF. This datasheet also covers the MAX4820 variant, as both devices belong to the same +3.3v/+5v / 8-channel / cascadable relay drivers family and are provided as variant models within a single manufacturer datasheet.

General Description

The MAX4820/MAX4821 8-channel relay drivers offer built-in kickback protection and drive +3.3V/+5V nonlatching or dual-coil-latching relays.

These devices are especially useful when driving +3V relays.

Key Features

  • a 2Ω on-resistance and is guaranteed to sink 70mA (min) of load current. Both devices consume less than 50µA (max) quiescent current and have 1µA output off-leakage current. The MAX4820 features an SPI™-/QSPI™-/.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX4820_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
MAX4822 (MAX4822 - MAX4825) 8-Channel Relay Drivers Maxim Integrated Products
MAX4823 (MAX4822 - MAX4825) 8-Channel Relay Drivers Maxim Integrated Products
MAX4824 (MAX4822 - MAX4825) 8-Channel Relay Drivers Maxim Integrated Products
MAX4825 (MAX4822 - MAX4825) 8-Channel Relay Drivers Maxim Integrated Products
MAX4826 (MAX4826 - MAX4831) 50mA/100mA Current-Limit Switches Maxim Integrated Products

Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX4820 +3.3V/+5V / 8-Channel / Cascadable Relay Drivers
MAX480 High-Precision / Low-Voltage / Micropower Op Amp
MAX481 Low-Power / Slew-Rate-Limited RS-485/RS-422 Transceivers
MAX481E RS-485/RS-422 Transceivers
MAX483 Overvoltage Protection Controllers with Status FLAG

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
19-2751; Rev 0; 1/03 +3.3V/+5V, 8-Channel, Cascadable Relay Drivers with Serial/Parallel Interface General Description The MAX4820/MAX4821 8-channel relay drivers offer built-in kickback protection and drive +3.3V/+5V nonlatching or dual-coil-latching relays. These devices are especially useful when driving +3V relays. Each independent open-drain output features a 2Ω on-resistance and is guaranteed to sink 70mA (min) of load current. Both devices consume less than 50µA (max) quiescent current and have 1µA output off-leakage current. The MAX4820 features an SPI™-/QSPI™-/MICROWIRE™compatible serial interface. Input data is shifted into an 8bit shift register and latched to the outputs when CS transitions from low to high.