The SN74FST32161CDGGR is a 20-Bit to 10-Bit Multiplexed FET Bus Switch with Precharge manufactured by Diodes Incorporated (formerly Pericom). It's designed for high-speed data transfer applications where minimal propagation delay and signal distortion are crucial. This device facilitates the connection of two buses, effectively acting as a high-performance switch.

Applications

• Memory Interleaving
• Bus Isolation
• Data Multiplexing
• High-Speed Data Acquisition Systems
• Telecommunications Equipment

Features

• Low On-State Resistance (Ron): Typically 4 Ohms
• Minimal Propagation Delay: Less than 250ps
• 20-Bit to 10-Bit Multiplexing
• Precharge Capability
• TTL-Compatible Control Inputs
• Low Power Consumption
• Hot-Insertion Capability

Benefits

• Significantly reduces signal degradation and insertion loss due to the low on-state resistance, ensuring signal integrity.
• Enables high-speed data transfer with its minimal propagation delay, improving system performance.
• Precharge feature minimizes power consumption and facilitates faster switching speeds in certain applications.
• Simplifies system design and reduces component count through multiplexing.
• Hot-insertion capability allows for online maintenance and upgrades without system downtime.

Additional Details

The SN74FST32161CDGGR operates with a supply voltage range of 3.3V to 5V. It is housed in a TSSOP (Thin Shrink Small Outline Package) for efficient board space utilization. The precharge function allows for pre-charging the bus lines to a defined voltage level before the switch is enabled, reducing switching noise and improving signal integrity. The device is designed to minimize signal reflection and crosstalk, making it suitable for demanding high-speed applications.

The device is bi-directional, allowing data to flow in either direction. It features enable inputs that control the switching function. When the enable input is active, the selected bus lines are connected; when inactive, the buses are isolated. The TTL-compatible control inputs simplify interfacing with standard logic devices. This bus switch is designed for applications requiring high bandwidth and low signal distortion.