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The Fairchild Switch FSTU16862 provides 20-bits of highspeed CMOS TTL-compatible bus switching. The low OnResistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise.
The device is organized as a 20-bit bus switch. When OEX is LOW, the switch is ON and Port A is connected to Port B. When OEX is HIGH, a high impedance state exists between the A and B Ports. The A and B Ports are protected against undershoot to support an extended range to 2.0V below ground. Fairchild's integrated UndershootHardened Circuit (UHCTM) senses undershoot at the I/O and responds by preventing voltage differentials from developing and turning the switch on.
FSTU16862 Maximum Ratings
Supply Voltage (VCC) ................−0.5V to +7.0V DC Switch Voltage (VS) (Note 2) ..........−2.0V to +7.0V DC Input Voltage (VIN) (Note 3) ..........−0.5V to +7.0V DC Input Diode Current (lIK) VIN < 0V ..........−50 mA DC Output Current (IOUT) ............128 mA DC VCC/GND Current (ICC/IGND) ............±100 mA Storage Temperature Range (TSTG)....... −65 to +150
FSTU16862 Features
` Undershoot hardened to −2V (A and B Ports) ` 4 switch connection between two ports ` Minimal propagation delay through the switch ` Low lCC ` Zero bounce in flow-through mode ` Control inputs compatible with TTL level ` See Application Note AN-5008 for details on FSTU - Undershoot Protected Fairchild Switch Family