FST16211

FST16211 24-Bit Bus Switch July 1997 Revised August 2000 FST16211 24-Bit Bus Switch General Description The Fairchild Switch FST16211 provides 24-bits of highspeed CMOS TTL-compatible bus switching. 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 is organized as a 12-bit or 24-bit bus switch. When OE1 is LOW, the switch is ON and Port 1A is connected to Port 1B. When OE2 is LOW, Port 2A is connected to Port 2B. When OE1/2 is HIGH, a high impedance state exists between the A and B Ports. 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 s Also packaged in plastic Fine Pitch Ball Grid Array (FBGA) Ordering Code: Order Number FST16211GX (Note 1) FST16211MEA FST16211MTD Package Number BGA54A Preliminary MS56A MTD56 Package Description 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-195, 5.5mm Wide [TAPE and REEL] 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. Note 1: BGA package available in Tape and Reel only. Logic Diagram © 2000 Fairchild Semiconductor Corporation DS500037 www.fairchildsemi.com FST16211 Connection Diagrams Pin Assignment for SSOP and TSSOP Pin Descriptions Pin Name OE1, OE2 1A, 2A 1B, 2B Description Bus Switch Enables Bus A Bus B FBGA Pin Assignments 1 A B C D E F G H J 1A2 1A4 1A6 1A10 1A12 2A4 2A6 2A8 2A10 2 1A1 1A3 1A5 1A9 1A11 2A3 2A5 2A7 2A9 3 NC 1A7 GND 1A8 2A1 2A2 VCC 2A11 2A12 4 OE2 OE1 1B7 1B8 2B1 2B2 GND 2B11 2B12 5 1B1 1B3 1B5 1B9 1B11 2B3 2B5 2B7 2B9 6 1B2 1B4 1B6 1B10 1B12 2B4 2B6 2B8 2B10 Truth Table Inputs OE1 L L Pin Assignment for FBGA H H OE2 L H L H Inputs/Outputs 1A, 1B 1A = 1B 1A = 1B Z Z 2A, 2B 2A = 2B Z 2A = 2B Z TOP VIEW www.fairchildsemi.com 2 FST16211 Absolute Maximum Ratings(Note 2) Supply Voltage (VCC) DC Switch Voltage (VS) (Note 3) DC Input Voltage (VIN) (Note 4) DC Input Diode Current (lIK) VIN