FSTU3384

FSTU3384 10-Bit Bus Switch with −2V Undershoot Protection May 1999 Revised October 2006 FSTU3384 10-Bit Bus Switch with −2V Undershoot Protection General Description The Fairchild Switch FSTU3384 provides 10 bits of highspeed CMOS TTL-compatible bus switches. The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay generating additional ground bounce noise. Both the A Ports and the B Ports have “undershoot hardened” circuit protection to support an extended input range to 2.0V below ground. Fairchild’s integrated Undershoot Hardened Circuit (UHC®) senses undershoot at the I/Os, and responds by preventing voltage differentials from developing and turning on the switch. The device is organized as two 5-bit switches with separate bus enable (OE) signals. 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 a high-impedance state exists between the two ports. Features s 4Ω switch connection between two ports s Undershoot Hardened to -2.0V. s Minimal propagation delay through the switch s Low lCC. s Zero ground bounce in flow-through mode s Control inputs compatible with TTL level s See Applications Note AN-5008 for details. Ordering Code: Order Number FSTU3384WM FSTU3384QSC FSTU3384MTC Package Number M24B MQA24 MTC24 Package Description 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide 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 Names OE1, OE2 A0–A9 B0–B9 Description Bus Switch Enable Bus A Bus B Truth Table OE1 L L H H OE2 L H L H B0–B4 A0–A4 A0–A4 B5–B9 A5–A9 HIGH-Z State Function Connect Connect Connect Disconnect HIGH-Z State A5–A9 HIGH-Z State HIGH-Z State UHC® is a registered trademark of Fairchild Semiconductor Corporation. © 2000 Fairchild Semiconductor Corporation DS500195 www.fairchildsemi.com FSTU3384 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC ) DC Switch Voltage (VS) DC Input Voltage (VIN) (Note 2) DC Input Diode Current (IIK) VIN