FST16232MEA

FST16232 Synchronous 16-Bit to 32-Bit Multiplexer/Demultiplexer Bus Switch July 1997 Revised December 1999 FST16232 Synchronous 16-Bit to 32-Bit Multiplexer/Demultiplexer Bus Switch General Description The Fairchild Switch FST16232 is a 16-bit to 32-bit highspeed CMOS TTL-compatible synchronous multiplexer/ demultiplexer bus switch. The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. The device allows two separate datapaths to be multiplexed onto, or demultiplexed from, a single path. Two control select pins (S1, S0) are synchronous and clocked on the rising edge of CLK when CLKEN is LOW. Features s 4Ω switch connection between two ports. s Minimal propagation delay through the switch. s Low lCC. s Zero bounce in flow-through mode. s Control inputs compatible with TTL level. Ordering Code: Order Number FST16232MEA FST16232MTD Package Number MS56A MTD56 Package Description 56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide 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. Logic Diagram © 1999 Fairchild Semiconductor Corporation DS500054 www.fairchildsemi.com FST16232 Connection Diagram Pin Descriptions Pin Name S1 , S0 CLK CLKEN 1A, 2A 1B, 2B Description Control Pins Clock Input Clock Enable Input Bus A Bus B Truth Table Inputs S1 X L L H H S0 X L H L H CLK X ↑ ↑ ↑ ↑ CLKEN H L L L L Function Last State Disconnect A = B1 and A = B2 A = B1 A = B2 www.fairchildsemi.com 2 FST16232 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) DC Switch Voltage (VS) DC Input Voltage (VIN)(Note 2) DC Input Diode Current (lIK) VIN