FSTU32160 ,16-Bit to 32-Bit Multiplexer/Demultiplexer Bus Switch with -2V Undershoot ProtectionFeaturesThe Fairchild Switch FSTU32160 is a 16-bit to 32-bit high-
FSTU32160
16-Bit to 32-Bit Multiplexer/Demultiplexer Bus Switch with -2V Undershoot Protection
FSTU32160 16-Bit to 32-Bit Multiplexer/Demultiplexer Bus Switch with −2V Undershoot Protection May 1999 Revised December 2000 FSTU32160 16-Bit to 32-Bit Multiplexer/Demultiplexer Bus Switch with −2V Undershoot Protection General Description Features The Fairchild Switch FSTU32160 is a 16-bit to 32-bit high-Undershoot hardened to −2V (A and B Ports). speed CMOS TTL-compatible multiplexer/demultiplexerSlower Output Enable times prevent signal disruption bus switch. The low on resistance of the switch allows 4Ω switch connection between two ports. inputs to be connected to outputs without adding propaga- Minimal propagation delay through the switch. tion delay or generating additional ground bounce noise. Low l . CC The device can be used in applications where two buses need to be addressed simultaneously. The FSTU32160 isZero bounce in flow-through mode. designed so that the A Port demultiplexes into B or B or 1 2Control inputs compatible with TTL level. both. The A and B Ports have “undershoot hardened” cir- See Applications Note AN-5008 for details cuit protection to support an extended range to 2.0V below ground. Fairchild’s integrated Undershoot Hardened Circuit (UHC) senses undershoot at the I/O’s, and responds by preventing voltage differentials from developing and turn- ing on the switch. Two select (S , S ) inputs provide switch enable control. 1 2 When S , S are HIGH, the device precharges the B Port 1 2 to a selectable bias voltage (Bias V) to minimize live inser- tion noise. Ordering Code: Order Number Package Number Package Description FSTU32160MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. UHC is a trademark of . © 2000 DS500244
