FSTD16244 Datasheet | Fairchild Semiconductor

Preliminary FSTD16244 16-Bit Bus Switch with Level Shifting (Preliminary) November 2001 Revised November 2001 FSTD16244 16-Bit Bus Switch with Level Shifting (Preliminary) General Description The Fairchild Switch FSTD16244 provides 16-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 16-bit switch. There are four 4-bit switches with separate output enable inputs. When OE is LOW, the switch in ON and Port A is connected to Port B. When OE is HIGH, the switch OFF and a high impedance state exists between the A and B Ports. Features I 4Ω switch connection between two ports. I Minimal propagation delay through the switch. I Low l CC. I Zero bounce in flow-through mode. I Control inputs patible with TTL level. I Tru Translation voltage translation from 5.0V inputs to 3.3V outputs Ordering Code: Order Number FSTD16244MTD 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. Tru Translation is trademark of Fairchild Semiconductor Corporation. © 2001 Fairchild Semiconductor Corporation DS500693 .fairchildsemi. Preliminary FSTD16244 Connection Diagram Logic Diagram Pin Descriptions Pin Name OEn 1An, 2An, 3An, 4An 1Bn, 2Bn, 3Bn, 4Bn Description Output Enable Input (Active LOW) Bus A Bus B Truth Table Inputs OEx L H H = HIGH Voltage Level L = LOW Voltage Level Outputs A, B A Port = B Port Z Z = High Impedance .fairchildsemi. Preliminary...