LM8333GGR8/NOPB

Controllers Overview

The LM8333GGR8/NOPB is a mobile I/O companion device designed for key-scan, I/O expansion, PWM generation, and ACCESS.bus host interface applications. It operates within a supply voltage range of 2.7 V to 5.5 V and supports an I2C clock frequency up to 400 kHz. The component features four general-purpose I/O pins with configurable pull-up resistors and includes a dedicated reset pin. It is housed in a 16-pin TSSOP package (RGR) suitable for surface-mount assembly.

Controllers Feature Summary

• Integrated key-scan controller supporting matrix keypad input
• I/O expansion capability with configurable pull-ups
• Built-in PWM generator for peripheral control
• ACCESS.bus host interface support

Controllers Applications

• Mobile phone keypad scanning
• Portable device I/O expansion
• ACCESS.bus host systems

Controllers Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free status and RoHS compliance as per Texas Instruments documentation. Confirm the package marking matches the 16-pin TSSOP outline. Ensure the order quantity aligns with manufacturer reel specifications if applicable. Cross-reference the datasheet revision date to confirm feature consistency.

Controllers Selection Notes

Select this component when a low-pin-count solution is required for mobile I/O tasks including key scanning and basic output control. Verify that the 400 kHz I2C speed meets system timing requirements. Ensure the operating voltage range of 2.7 V to 5.5 V covers the target system's power rails. Consider the TSSOP-16 footprint constraints during PCB layout.

Controllers Part Context

The LM8333 belongs to the LM8333 family of mobile I/O companions from Texas Instruments. It serves as a specialized interface chip for portable electronics, distinguishing itself through integrated key-scan and ACCESS.bus capabilities compared to standard GPIO expanders. The NOPB suffix denotes non-phosphorus leaded packaging compliant with environmental standards.

Controllers Replacement Considerations

LM8333GGR8AXS/NOPB: Verified variant within the same functional family offering identical core specifications.