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Datasheet Replacement Marking Code
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25LC128
XR21B (14)XR21 (26)XR2 (167)
Exar Corporation

XR21B1411IL16-F

USB Bridge, USB to UART USB 2.0 UART Interface 16-QFN-EP (3x3)
Exar Corporation

XR21B1421IL28-F

USB Bridge, USB to UART USB 2.0 UART Interface 28-QFN (5x5)
Exar Corporation

XR21B1421IL24-F

USB Bridge, USB to UART USB 2.0 UART Interface 24-QFN (4x4)
Exar Corporation

XR21B1420IL28-F

USB Bridge, USB to UART USB 2.0 UART Interface 28-QFN (5x5)
Exar Corporation

XR21B1422IL40-F

USB Bridge, USB to UART USB 2.0 UART Interface 40-QFN (6x6)
Exar Corporation

XR21B1424IV64-F

USB Bridge, USB to UART USB 2.0 UART Interface 64-LQFP (10x10)
Exar Corporation

XR21B1421IL24TR-F

USB Bridge, USB to UART USB 2.0 UART Interface 24-QFN (4x4)
Exar Corporation

XR21B1421IL28TR-F

USB Bridge, USB to UART USB 2.0 UART Interface 28-QFN (5x5)
Exar Corporation

XR21B1420IL28TR-F

USB Bridge, USB to UART USB 2.0 UART Interface 28-QFN (5x5)
Exar Corporation

XR21B1422IL40TR-F

USB Bridge, USB to UART USB 2.0 UART Interface 40-QFN (6x6)
Exar Corporation

XR21B1424IV64TR-F

USB Bridge, USB to UART USB 2.0 UART Interface 64-LQFP (10x10)
Exar Corporation

XR21B1420IL28-0A-EVB

XR21B1420 - Interface, USB 2.0 to UART Evaluation Board
Exar Corporation

XR21B1422IL40-0A-EVB

XR21B1422 - Interface, USB 2.0 to UART Evaluation Board
Exar Corporation

XR21B1411IL-0A-EB

SP337, XR21B1411 - Interface, USB 2.0 to UART Evaluation Board
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