FSTU6800QSC ,10-Bit Bus Switch with Pre-Charged Outputs and −2V Undershoot Hardened Circuit (UHC) ProtectionApplications Note AN-5008 for details.switch. The device also precharges the B Port to a select-abl ..
FSTU6800QSCX ,10-Bit Bus Switch with Precharged Outputs and -2V Undershoot ProtectionFSTU6800 10-Bit Bus Switch with Precharged OutputsDecember 1998Revised December 2000FSTU680010-Bit ..
FSTU6800WM ,10-Bit Bus Switch with Precharged Outputs and -2V Undershoot ProtectionFeaturesThe Fairchild Switch FSTU6800 provides 10-bits of high-
FSTU6800QSC
10-Bit Bus Switch with Pre-Charged Outputs and −2V Undershoot Hardened Circuit (UHC) Protection
FSTU6800 10-Bit Bus Switch with Pre-Charged Outputs December 1998 Revised December 1999 FSTU6800 10-Bit Bus Switch with Pre-Charged Outputs and −2V Undershoot Hardened Circuit (UHC) Protection General Description Features The Fairchild Switch FSTU6800 provides 10-bits of high-4Ω switch connection between two ports. speed CMOS TTL-compatible bus switching. The low onUndershoot Hardened to -2.0V. resistance of the switch allows inputs to be connected to Soft enable turn-on to minimize bus-to-bus charge outputs without adding propagation delay or generating sharing during enable. additional ground bounce noise. Both the A Ports and the B Low l . CC Ports are “undershoot hardened” with UHC protection to support an extended input range to 2.0V below ground.Zero bounce in flow-through mode. Fairchild’s integrated Undershoot Hardened Circuit, UHC Output precharge to minimize live insertion noise. senses undershoot at the I/Os, and responds by preventing Control inputs compatible with TTL level. voltage differentials from developing and turning on the See Applications Note AN-5008 for details. switch. The device also precharges the B Port to a select- able bias voltage (BiasV) to minimize live insertion noise. The device is organized as a 10-bit switch with a bus enable (OE) signal. When OE is LOW, the switch is ON and Port A is connected to Port B. When OE is HIGH, the switch is OPEN and the B Port is precharged to BiasV through an equivalent 10-kΩ resistor. Ordering Code: Order Number Package Number Package Description FSTU6800WM M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MO-153 4.4mm Wide FSTU6800QSC MQA24 24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150” Wide FSTU6800MTC MTC24 24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Diagram Connection Diagram Pin Descriptions Pin Name Description Truth Table OE Bus Switch Enable B –B OE Function 0 9 ABus A LA –A Connect BBus B 0 9 HBiasV Precharge BiasV Bus B Voltage Bias UHC is a trademark of . © 1999 DS500194
