FM3540 Datasheet - Fairchild Semiconductor

FM3540 4/5-Bit Multiplexed 1-Bit Latched Port

The FM3540/60 multiplexes the I-port input signals with two internal non-volatile registers that can be loaded through the serial port. The multiplexer is selected via the serial port and defaults to the I-Port upon power-up. Pull-up resistors are provided on the input port to accommodate connection.

FM3540 Features

* I Extended Operating Voltage Range 3.0V-5.5V I IIC Compatible Slave Interface. I ESD performance: Human body model > 2000V I Choice of 2.5V outputs or Open-Drain Outputs Block Diagram Non_Mux_Out I[4:0] Y[4:0] Mux1 SOPRA Mux2 SOPRB MXSB, MXSA IIC Read Logic Mux3 Control Logic MUXSEL OVRD SDA

FM3540 Datasheet (100.10 KB)