MAX4533 Quad, Rail-to-Rail, Fault-Protected, SPDT Analog Switch
Product Details
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.
The MAX4533 operates from dual ±4.5V to ±18V power supplies or a single +9V to +36V supply. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring both TTL and CMOS logic compatibility when using ±15V supplies or a +12V supply. On-resistance is 175Ω max and is matched between switches to 10Ω max. The off-leakage current is only 0.5nA at TA = +25°C and 10nA at TA = +85°C.
Applications
- Avionics and Military Systems
- Communication Systems
- Data Acquisition
- Industrial and Process Control
- Portable Instrumentation
- Redundant/Backup Systems
- Test Equipment
Features and Benefits
- 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
- 1kΩ (typ) Output Clamp Resistance During Overvoltage
- 175Ω (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