IDT74FST163209

    The IDT74FST163209 belongs to IDT's family of Bus switches. Bus switch devices perform the function of connecting or isolating two ports without providing any inherent current sink or source capability.  Thus they generate little or no noise of their own while providing a low resistance path for an external driver.  These devices connect input and output ports through an n-channel FET.  When the gate-to-source junction of this FET is adequately forward-biased the device conducts and the resistance between input and output ports is small.  Without adequate bias on the gate-to-source junction of the FET,the FET is turned off, therefore with no V_CC applied, the IDT74FST163209 has hot insertion capability.

    The low on-resistance and simplicity of the connection between input and output ports reduces the delay in this path to close to zero.

    The IDT74FST163209 provides four 9-bit TTL- compatible ports that support 2 way bus exchange.  The S_0-2 pins control the bus exchange and switch enable functions.