Analog Switch Octal SPST 20-Pin SSOP

The MAX4506/MAX4507 multiple, two-terminal signal-line protectors are pin-compatible with the industry-standard MAX366/MAX367. These new circuit protectors feature fault-protected inputs and rail-to-rail signal handling capability. The input pins are protected from overvoltage faults up to ±36V with power on or ±40V with power off. During a fault condition, the input terminal becomes an open circuit and only nanoamperes of leakage current flow from the source; but the switch output (OUT_) furnishes typically 19mA from the appropriate polarity supply to the load. This ensures unambiguous rail-to-rail outputs when a fault begins and ends. The MAX4506 contains three independent protectors while the MAX4507 contains eight independent protectors. They can protect both unipolar and bipolar analog signals using either unipolar (+9V to +36V) or bipolar (±8V to ±18V) power supplies. These devices have no logic control inputs; the protectors are designed to be always-on when the supplies are on. On-resistance is 100O max and matched within 7O , and on-leakage is less than 0.5nA at TA = +25°C. The MAX4506 is available in 8-pin SO/DIP packages. The MAX4507 is available in 20-pin SSOP and 18-pin SO/DIP packages.

• Overvoltage Protection
  • ±40V with Power Off
  • ±36V with Power On

Open Signal Paths with Power Off

Output Clamps to Either Rail with an Input Overvoltage

Any On Channel Output is Not Affected by an Overvoltage to Any Other Channel

100O max On-Resistance

10ns Overvoltage Turn-On Delay

No Latchup During Power Sequencing

Rail-to-Rail Signal Handling

500O Output Clamp Resistance During Overvoltage