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

Download the FM3540 datasheet PDF. This datasheet also covers the FM3 variant, as both devices belong to the same 4/5-bit multiplexed 1-bit latched port family and are provided as variant models within a single manufacturer datasheet.

General Description

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.

Key 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 SCL IIC Interface Shift Register Slave Address Register ASEL Comparator Start/Stop Logic © 2001 Fairchild Semiconductor Corporation FM3540/60 Rev. C 1 www. fairchildsemi. com FM3540/60 4/5 Bit M.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (FM3-540.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Fairchild (now onsemi)

Part Number Description
FM3540CM14 4/5 Bit Multiplexed/ 1 Bit Latched Port
FM3540CMT14 4/5 Bit Multiplexed/ 1 Bit Latched Port
FM3540SM14 4/5 Bit Multiplexed/ 1 Bit Latched Port
FM3540SMT14 4/5 Bit Multiplexed/ 1 Bit Latched Port
FM3560M20 4/5 Bit Multiplexed/ 1 Bit Latched Port

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches October 2001 FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches General Description 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 connections to open drain outputs and to eliminate the need for external resistors. The device supports a choice of either 2.5V output or Open Drain Outputs for easy interface to devices with different VDD Levels.