FIN424CMLX

Overview

The FIN424CMLX is a 20-bit ultra-low-power serializer designed for µController and RGB display interfaces. It operates with a core voltage (VDDA/S) of 2.5 to 3.0 V and an I/O voltage (VDDP) ranging from 1.6 V to VDDA/S. The device supports serial operating frequencies up to 310 MHz, enabling data transfer rates compatible with QVGA capabilities at a maximum strobe frequency of 10 MHz. Dynamic current consumption is specified at 9 mA per pair under typical conditions, while standby current drops to 10 µA. It utilizes a 32-lead Molded Leadless Package (MLP) measuring 5 x 5 mm.

Feature Summary

• Ultra-low power consumption with selectable edge rates to minimize dynamic current draw
• Built-in voltage translation between parallel I/O and core supplies
• Internal termination resistors eliminating external components
• High ESD protection rating compliant with IEC standards

Applications

• Mobile handsets including slider, folder, and clamshell designs
• GSM and CDMA phone LCD interfaces
• Microcontroller-based display systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official database to ensure compatibility with current system requirements. Confirm that the MLP-32 package dimensions align with the target PCB land pattern specifications before finalizing procurement orders.

Selection Notes

Select this component when minimizing flex cable count and reducing electromagnetic interference in mobile display applications is required. Ensure the design accommodates the differential serial impedance range of 70 to 130 ohms and verify that the baseband processor supports the necessary strobe timing constraints.

Part Context

This part belongs to the µSerDes family, originally developed by Fairchild Semiconductor and integrated into ON Semiconductor's portfolio following corporate acquisition. The series focuses on reducing interface complexity and power consumption for mobile display connections.

Replacement Considerations

The FIN425CMLX serves as the complementary deserializer within the same product family. Verify pinout compatibility and signal directionality when substituting or pairing components in a complete serialization link.

FAQ

How does the SLEW pin affect the deserializer output?

The SLEW pin on the companion deserializer controls the parallel output edge rate. Setting it to 'Slow' reduces electromagnetic interference, while 'Fast' provides quicker transition times.

What is the recommended differential impedance for the serial traces?

The datasheet specifies a design goal of 70 to 130 ohms differential characteristic impedance for the serial transmission lines to ensure signal integrity.

Can the core and serial I/O voltages be different?

Yes, the I/O supply (VDDP) can range from 1.6 V to the core voltage (VDDA/S), which is fixed between 2.5 V and 3.0 V, allowing for built-in voltage translation.