JLC1562BFELG

Overview

The JLC1562BFELG is an I2C Bus I/O expander manufactured by onsemi, housed in a SOEIAJ-16 (SOIC-8W) surface-mount package. It provides an 8-bit bidirectional input/output port and a 6-bit resolution Digital to Analog Converter (DAC). The device operates within a DC supply voltage range of 4.2V to 6.0V and supports a maximum SCL clock frequency of 100 kHz. It features five comparators at inputs P0-P4, open-drain outputs for the I/O pins, and selectable bus addresses via three address input pins.

Feature Summary

• I2C Bus Interface: Supports standard two-wire serial communication with selectable 3-bit device addressing.
• Integrated DAC: Includes a 6-bit Digital to Analog Converter with programmable threshold voltages for comparator functions.
• Comparator Functionality: Features five internal comparators that allow input pin states to be compared against controllable reference voltages.
• Power Management: Designed for low power dissipation with input protection from external bus currents during power-down mode.

Applications

• Remote I/O expansion in industrial control systems
• Embedded systems requiring additional digital input/output channels
• Battery-powered devices utilizing low power operation modes

Procurement Notes

Verify the specific ordering suffix 'FELG' corresponds to the SOEIAJ-16 tape and reel packaging configuration. Confirm RoHS compliance status as indicated by the 'G' suffix in manufacturer documentation. Ensure compatibility with existing PCB footprints for the SOEIAJ-16 package before procurement.

Selection Notes

Select this component when an I2C-compatible I/O expander with integrated analog output capabilities is required. The 6-bit DAC and five comparators distinguish it from standard digital-only expanders. Verify that the 4.2V minimum operating voltage aligns with the system's power supply rails.

Part Context

The JLC1562B series facilitates easy I2C bus expandibility, allowing up to eight devices on the same bus through unique 3-bit address selection. This specific part number represents the lead-free, tape-and-reel variant of the JLC1562B I/O expander family.

Replacement Considerations

Direct replacements must match the SOEIAJ-16 package and I2C interface. Verify functional equivalence regarding the 6-bit DAC and comparator specifications if substituting with other I/O expanders.

FAQ

What is the function of the VDAC pin?

The VDAC pin serves as the output for the integrated 6-bit Digital to Analog Converter, providing a programmable voltage reference.

How is the device address configured?

The device address is configured using the three address input pins A0, A1, and A2, which are internally pulled up to VDD.

What happens to the I/O pins during power-down mode?

Inputs are protected from external bus currents during power-down mode to ensure safe operation when the device is not powered.