SN74CBTK32245 Datasheet | Texas Instruments

description /ordering information The SN74CBTK32245 provides 32 bits of high-speed TTL-patible bus switching. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The A and B ports have an active-clamp undershoot-protection circuit. When there is an undershoot, the active-clamp circuit is enabled and current from VCC is supplied to clamp the output, preventing the pass transistor from turning on. The device is organized as four 8-bit bus switches, two 16-bit bus switches, or one 32-bit bus switch. When the output-enable (OE) input is low, the switch is on and port A is connected to port B. When OE is high, the switch is open and the high-impedance state exists between the two ports. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. ORDERING INFORMATION PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING LFBGA - GKE - 40°C to 85°C LFBGA - ZKE (Pb-free) Tape and reel SN74CBTK32245GKER SN74CBTK32245ZKER KT245 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at .ti./sc/package. FUNCTION TABLE (each 8-bit bus switch) INPUT OE FUNCTION A port = B port Disconnect Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Widebus+ is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright  2003, Texas Instruments Incorporated - POST OFFICE BOX 655303 DALLAS, TEXAS 75265 SN74CBTK32245 32ĆBIT FET BUS...