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FSTU3384MTC Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FSTU3384MTC Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 5 page © 1999 Fairchild Semiconductor Corporation DS500195 www.fairchildsemi.com May 1999 Revised December 1999 FSTU3384 10-Bit Bus Switch with −2V Undershoot Hardened Circuit (UHC) Protection General Description The Fairchild Switch FSTU3384 provides 10 bits of high- speed CMOS TTL-compatible bus switches. The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay generating addi- tional ground bounce noise. Both the A Ports and the B Ports are “undershoot hardened” with UHC 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 4 Ω 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: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Diagram Pin Descriptions Connection Diagram Truth Table UHC is a trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description FSTU3384WM M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MO-153 4.4mm Wide FSTU3384QSC MQA24 24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150” Wide FSTU3384MTC MTC24 24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Pin Names Description OEA, OEB Bus Switch Enable A0–A9 Bus A B0–B9 Bus B OEAOEB B0–B4 B5–B9 Function LL A0–A4 A5–A9 Connect LH A0–A4 HIGH-Z State Connect H L HIGH-Z State A5–A9 Connect H H HIGH-Z State HIGH-Z State Disconnect |
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