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FT
XXXX
Device Number
XX
Embedded EEPROM
Blank = 0.5kB for 3150 transceiverE4 = 4kB for 3120 transceiver
X
Package Type
S = SOIC32P = TQFP44 for 3120 transceiverP = TQFP64 for 3150 transceiver
XX
Maximum Operating Frequency
20 = 20MHz40 = 40MHz
Note: Part number description table describes usual part-numbering system for more chips, therefore this table can contain information, that might not be valid for the actually selected chip. The information here are provided on the best-effort basis and might be either inaccurate or incoplete. Therefore always check the latest datasheet of the chip for part number description detail. If you find some inaccuracy, let us please know.