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Product Detailed Parameters
- Description：IO EXPANDER
- Series：*
- Mfr：onsemi
- Package：Bulk
- Number of I/O：-
- Interface：-
- Interrupt Output：-
- Features：-
- Output Type：-
- Current - Output Source/Sink：-
- Clock Frequency：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The LC709004A-TLM-E is a CMOS I/O expander integrated circuit manufactured by onsemi, designed to expand the input and output capabilities of microcontrollers. It features a 16-bit parallel I/O interface for peripheral communication and supports 4- or 5-wire synchronous serial transmission for control data. The device operates within a wide voltage range of 2.0V to 6.0V and allows bit-level specification of I/O direction and output type (CMOS or N-channel open drain). It includes an interrupt output function to notify the host MCU of status changes.
Feature Summary
- Supports 16-bit parallel I/O expansion with configurable direction and output types
- Enables 4- or 5-wire synchronous serial communication with microcontrollers
- Provides interrupt output capability for efficient status monitoring
Applications
- Microcontroller I/O port expansion in embedded systems
- Peripheral interface management in consumer electronics
- Industrial control systems requiring additional digital I/O lines
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for recent Product Change Notifications (PCNs) regarding packaging or material updates. Ensure storage conditions meet moisture sensitivity level requirements before reflow soldering.
Selection Notes
Select this component when a microcontroller requires additional digital I/O lines beyond its native ports. Verify that the system voltage falls within the 2.0V to 6.0V operating range. Consider the synchronous serial interface compatibility with the target MCU's communication protocols and ensure sufficient current drive capability for the connected peripherals.
Part Context
This part belongs to the LC709004A series of I/O expanders from onsemi. It is functionally similar to other members like the LC709006A but offers a different pin count and I/O capacity. The series is designed for applications needing reliable, low-cost I/O expansion with flexible configuration options for various peripheral devices.
Replacement Considerations
Check for direct pin-to-pin replacements within the same family, such as other variants in the LC709004A series. Verify functional equivalence regarding serial interface timing and I/O characteristics before substitution.
