General Description

The MAX4533 quad, single-pole/double-throw (SPDT), fault-protected analog switch is pin-compatible with the industry-standard MAX333 and MAX333A. The MAX4533 features fault-protected inputs and Rail-to-Rail? signal handling. The normally open (NO_ ) and normally closed (NC_ ) terminals are protected from overvoltage faults up to ±25V with power on and up to ±40V with power off. During a fault condition, NO_ and NC_ become high impedance with only nanoamperes of leakage current flowing to the source. In addition, the output (COM_) clamps to the appropriate polarity supply rail and provides up to ±10mA of load current. This ensures unambiguous rail-to-rail outputs when a fault occurs.

Features

? Rail-to-Rail Signal Handling

? ±40V Fault Protection with Power Off ±25V Fault Protection with ±15V Supplies

? All Switches Off with Power Off

? No Power-Supply Sequencing Required During Power-Up or Power-Down

? Output Clamped to Appropriate Supply Voltage During Fault Condition—No Transition Glitch

? 1k? (typ) Output Clamp Resistance During Overvoltage

? 175? (max) Signal Paths with ±15V Supplies

? 20ns (typ) Fault Response Time

? ±4.5V to ±18V Dual Supplies +9V to +36V Single Supply

? Pin-Compatible with Industry-Standard MAX333/MAX333A

? TTL/CMOS-Compatible Logic Inputs with ±15V or Single +9V to +15V Supplies

Applications

??? Redundant/Backup Systems

??? Portable Instruments

??? Test Equipment

??? Data-Acquisition Systems

??? Communications Systems

??? Industrial and Process Control

??? Avionics Systems