FSTD16861 Datasheet | Fairchild Semiconductor

FSTD16861 20-Bit Bus Switch with Level Shifting May 2001 Revised May 2001 FSTD16861 20-Bit Bus Switch with Level Shifting General Description The Fairchild Switch FSTD16861 provides 20-bits of highspeed CMOS TTL-patible 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. A diode to VCC has been integrated into the circuit to allow for level shifting between 5V inputs and 3.3V outputs. The device is organized as a 10-bit or 20-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 OEX 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 l CC. s Zero bounce in flow-through mode. s Control inputs patible with TTL level. s Tru Translation voltage translation from 5.0V inputs to 3.3V outputs Ordering Code: Order Number FSTD16861MTD Package Number MTD48 Package Description 48-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. Connection Diagram Logic Diagram Truth Table Inputs Inputs/Outputs OE2 L H L H 1A, 1B 1A = 1B 1A = 1B Z Z 2A, 2B 2A = 2B Z 2A = 2B Z OE1 L Description Bus Switch Enables Bus A Bus B L H H Pin Descriptions Pin Name OE1, OE2 1An, 2An 1Bn, 2Bn H = HIGH Voltage Level L = LOW Voltage Level Z = High Impedance Tru Translation is trademark of Fairchild Semiconductor Corporation. © 2001 Fairchild Semiconductor Corporation DS500421 .fairchildsemi....