FSTD16450

FSTD16450 Configurable 4-Bit to 20-Bit Bus Switch with Selectable Level Shifting January 2001 Revised August 2001 FSTD16450 Configurable 4-Bit to 20-Bit Bus Switch with Selectable Level Shifting General Description The Fairchild Universal Bus Switch FSTD16450 provides 4-bit, 5-bit, 8-bit, 10-bit, 16-bit, 20-bit of high-speed 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 FSTD16450 is designed to allow “customer” configuration control of the enable connections. The device is organized as either a 4-bit, 5-bit, 10-bit or 20-bit bus switch. 8bit and 16-bit configurations are also achievable (see Functional Description). The device's bit configuration is chosen through select pin logic. (see Truth Table). When OEx is LOW, Port Ax is connected to Port Bx. When OEx is HIGH, the switch is OPEN. Another key device feature is the addition of ...