JLC1562BNG

Overview

The JLC1562BNG is an I2C bus I/O expander manufactured by onsemi, housed in a 16-pin PDIP 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 the inputs, with address selection handled via three hardware pins. The component functions as a slave device on the I2C bus, allowing for easy expansion of system I/O capabilities.

Feature Summary

• Integrates an 8-bit bidirectional I/O port alongside a 6-bit DAC output for analog signal generation.
• Supports up to eight devices on a single I2C bus through selectable 3-bit hardware addressing.
• Includes five internal comparators that allow input pin voltages to be compared against controllable thresholds.
• Features open-drain outputs for I/O pins and internal pull-up resistors for address input pins.

Applications

• Expanding microcontroller I/O ports in embedded systems requiring additional digital inputs or outputs.
• Generating variable reference voltages or control signals using the integrated 6-bit DAC.
• Implementing threshold detection circuits where input voltages are monitored against programmable comparator levels.

Procurement Notes

Verify the specific ordering suffix 'N' corresponds to the PDIP-16 package configuration when sourcing components. Confirm that the 'G' suffix indicates a lead-free package variant if environmental compliance is required. Ensure compatibility with standard I2C bus protocols before integration into existing designs.

Selection Notes

Select this component when a low-power solution is needed for adding I/O capacity to an I2C-based architecture. The fixed 100 kHz clock speed limits high-speed applications, making it suitable for general-purpose monitoring and control tasks rather than rapid data acquisition.

Part Context

This part belongs to the JLC1562 family of I2C bus expanders from onsemi. The 'N' suffix specifically denotes the 16-pin Plastic Dual In-line Package (PDIP), while other suffixes like 'F' indicate SOEIAJ-16 packages. The device serves as a peripheral interface chip designed to simplify system design by reducing pin count requirements on the main controller.

Replacement Considerations

Direct functional replacements may include other I2C I/O expanders with similar pin counts and voltage ranges. Verify that substitute parts support the same 4.2V to 6.0V operating voltage and offer comparable DAC resolution if analog output functionality is critical to the application.