Toshiba Electronics Europe has expanded its family of bus switches with a device that addresses the data rate and power requirements of digital applications requiring a 5V interface. The bus switch is claimed to offer high-speed operation through reduction of capacitance and resistance values.
The TC7MB3257C is a quad SPDT (single pole, double throw) bus switch that operates between 4 and 5.5V. In the ON state the switch exhibits a terminal capacitance of 8.5pF and an ON resistance of 3W and results in a 3dB cut-off frequency of 590MHz.
The bus switch can operate in multiplexing or full isolation mode. Multiplexing of the active output port is achieved by applying a select signal, while full isolation between input and output can be achieved with the output enable voltage, claims the company. Additional features of the bus switch are a maximum quiescent current of 10µA, power down protection for all input pins and integrated protection against electrostatic discharge up to 2kV according to the HBM (human body model).
The switch is available in standard TSSOP16 TC7MB3257CFT and VSSOP16 TC7MB3257CFK packages as well as the VQON16 package TC7MB3257CFTG with dimensions of 2.7x2.7x0.6mm. The line-up of bus switches is expanded with different SPST (single pole, single throw) options and a single SPDT switch configuration.
