DG412F Datasheet

• No Power-Supply Sequencing Required
• Rail-to-Rail Signal Handling
• All Switches Off with Power Off
• All Switches Off when V+ is Off and V- is On
• ±40V Fault Protection with Power Off
• ±36V Fault Protection with ±15V Supplies
• Control Line Fault Protection from V- - 0.3V to V- + 40V
• Pin Compatible with Industry-Standard DG412
• 20ns (typ) Fault Response Time
• 35Ω (max) R_ON with ±15V Supplies
• ±4.5V to ±20V Dual Supplies
• +9V to +36V Single Supply
• TTL- and CMOS-Compatible Logic Inputs with ±15V or Single +9V to +15V Supplies

• Avionics
• Communication Systems
• Data Acquisition
• Industrial and Process Control Systems
• Redundant/Backup Systems
• Signal Routing
• Test Equipment

The DG412F are quad, single-pole/single-throw (SPST), fault-protected analog switches. They are pin compatible with the industry-standard nonprotected DG412. These new switches feature fault-protected inputs and rail-to-rail signal-handling capability. All terminals are protected from overvoltage faults up to ±36V with power on and up to ±40V with power off. During a fault condition, the COM, NO, or NC terminal becomes an open circuit and only microamperes of leakage current flow from the source. On-resistance is 35Ω (max) and is matched between switches to 1.5Ω (max) at +25°C.

The DG412F has four normally open (NO) switches. These CMOS switches operate with dual power supplies ranging from ±4.5V to ±20V or a single supply between +9V and +36V. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring both TTL and CMOS logic compatibility when using ±15V or a single +12V supply.

For supply voltages of +5V, refer to the MAX4712 data sheet.