Overview
The MAX4825ETP+ is an 8-channel relay driver produced by Analog Devices Inc./Maxim Integrated. This component is designed to drive +3V and +5V relays and features built-in kickback protection for fast recovery. It is particularly useful in applications requiring independent control of multiple relay outputs. The device is available in a space-saving 4mm x 4mm, 20-pin thin QFN package and operates over an extended temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Supply Voltage | +3.3V, +5V |
| Coil Drive Current | 70mA (min) |
| RON (On Resistance) | 5Ω (max) |
| Interface | 10MHz SPI-/QSPI-/MICROWIRE-Compatible Serial Interface, Optional 4-bit Parallel Interface |
| Package Type | 20-pin TQFN |
| Package Size | 4mm x 4mm |
| Operating Temperature Range | -40°C to +85°C |
| Quiescent Supply Current | 300µA (max) |
Key Features
- Built-In Zener Kickback Protection for Fast Recovery
- Programmable Power-Save Mode Reduces Relay Power Consumption
- 10MHz SPI-/QSPI-/MICROWIRE-Compatible Serial Interface
- Eight Independent Output Channels
- Drive +3V and +5V Relays
- SET / RESET Functions to Turn On/Off All Outputs Simultaneously
- Serial Digital Output for Daisy Chaining
- Optional Parallel Interface
- Low 300µA (max) Quiescent Supply Current
Applications
- ATE Equipment
- DSL Redundancy Protection (ADSL/VDSL/HDSL)
- T1/E1 Redundancy Protection
- T3/E3 Redundancy Protection
- Industrial Equipment
- Test Equipment (Oscilloscopes, Spectrum Analyzers)
Q & A
- What is the MAX4825ETP+ used for?
The MAX4825ETP+ is used as an 8-channel relay driver to control +3V and +5V relays in various applications. - What type of package does the MAX4825ETP+ come in?
The MAX4825ETP+ comes in a 4mm x 4mm, 20-pin thin QFN package. - What is the operating temperature range of the MAX4825ETP+?
The operating temperature range is -40°C to +85°C. - Does the MAX4825ETP+ have built-in kickback protection?
Yes, it features built-in Zener kickback protection for fast recovery. - What interfaces does the MAX4825ETP+ support?
The device supports a 10MHz SPI-/QSPI-/MICROWIRE-Compatible Serial Interface and an optional 4-bit parallel interface. - How many independent output channels does the MAX4825ETP+ have?
The device has eight independent output channels. - What is the minimum coil drive current of the MAX4825ETP+?
The minimum coil drive current is 70mA. - Does the MAX4825ETP+ have power-saving features?
Yes, it has a programmable power-save mode to reduce relay power consumption. - Can the MAX4825ETP+ turn on/off all outputs simultaneously?
Yes, it has SET / RESET functions to turn on/off all outputs simultaneously. - What is the quiescent supply current of the MAX4825ETP+?
The quiescent supply current is 300µA (max).
