Part # FSTUD32450 datasheet

Part Manufacturer: Fairchild Semiconductor

Fairchild Semiconductor

Part Description: FSTUD32450 Configurable 4-Bit to 40-Bit Bus Switch with -2V Undershoot Protection and Selectable Level Shifting

Part Details:

S FSTUD324 h August 2001 ifti Revised October 2006 ng 50 Conf FSTUD32450Configurable 4-Bit to 40-Bit Bus Switch with igur 2V Undershoot Protection and Selectable Level Shifting abl General Description Features The Fairchild Universal Bus Switch FSTUD32450 provides s Undershoot protected to e 4- 2V (A and B Ports) 4-bit, 5-bit, 8-bit, 10-bit, 16-bit, 20-bit...40-bit of high-speed s Voltage level shifting CMOS TTL-compatible bus switching. The low On Resis- Bit s 4: switch connection between two ports tance of the switch allows inputs to be connected to outputs s Minimal propagation delay through the switch t without adding propagation delay or generating additional o 4 ground bounce noise. s Low lCC The FSTUD32450 is designed to allow "customer" configu- s Zero bounce in flow-through mode 0-Bi ration control of the enable connections. The device can be s Control inputs compatible with TTL level organized as either a ten 4-bit, eight 5-bit, four 10-bit, two s See Applications Notes AN-5008 and AN-5021 for UHC t 20-bit or one 40-bit enabled bus switch. Also achievable details Bus Swit are 8-bit and 16-bit enabled configurations (see FunctionalDescription). The device s bit configuration is controlled s Packaged in plastic Fine-Pitch Ball Grid Array (FBGA) through select pin logic. (see Truth Table). When OEx isLOW, Port A Applications Note x is connected to Port Bx. When OEx is HIGH, the switch is OPEN. Select pins S0, S1, S2, S3, S4 and S5 are intended to be ch The A and B Ports are protected against undershoot to used as static user configurable control pins. The AC per- support an extended range to 2.0V below ground. formance of these pins has not been characterized or w

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FSTUD32450.pdf Datasheet