MAX4825ETP+

The MAX4825ETP+ is a 3.3V/5V, 8-channel relay driver with fast recovery time in 20 pin TQFN package. It offers built-in kickback protection and drives 3.3V/5V nonlatching or dual coil latching relays. A zener kickback protection circuit significantly reduces recovery time in applications where switching speed is critical. The MAX4825 has 4bit parallel input interface. The first 3 bits (A0, A1 and A2) determine the output address and the fourth bit (LVL) determinewhether selected output is switched on or off. Data is latched to outputs when complementary CS transitions from low to high. Built-in hysteresis (schmitt trigger) on all digital inputs allows this device to be used with slow rising and falling signals such as those from optocouplers or RC power-up initialization circuits. The MAX4825 is used in ATE equipment, DSL redundancy protection (ADSL/VDSL/HDSL), T1/E1 and T3/E3 redundancy protection and test equipments (oscilloscopes, spectrum analyzers).

• Supply voltage range from 2.3V to 5.5V
• Operating temperature range from -40°C to 85°C
• Coil drive current of 70mA
• Maximum on-resistance of 5ohm at VCC = 2.7V, IOUT_ = 70mA
• Active-low SET/active-low RESET functions to turn on/off all outputs simultaneously
• Serial digital output for daisy chaining
• Low quiescent supply current of 180μA (VCC = 5.5V) and dynamic supply current of 1.6mA (VCC = 5.5V)
• Zener clamping voltage of 9V
• Turn-on time of 1μs and turn-off time of 3μs

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