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SCAN921821

Part Number	SCAN921821
Manufacturer	National Semiconductor
Description	Dual 18-Bit Serializer
Published	Apr 13, 2010
Detailed Description	November 2004 www.DataSheet4U.com SCAN921821 - Dual 18-Bit Serializer with Pre-emphasis, IEEE 1149.1 (JTAG), and At-Spe...
Datasheet	SCAN921821 PDF File

Overview

November 2004 www.
DataSheet4U.
com SCAN921821 - Dual 18-Bit Serializer with Pre-emphasis, IEEE 1149.
1 (JTAG), and At-Speed BIST SCAN921821 Dual 18-Bit Serializer with Pre-emphasis, IEEE 1149.
1 (JTAG), and At-Speed BIST General Description The SCAN921821 is a dual channel 18-bit serializer featuring signal conditioning, boundary SCAN, and at-speed BIST.
Each serializer block transforms an 18-bit parallel LVCMOS/ LVTTL data bus into a single Bus LVDS data stream with embedded clock.
This single serial data stream with embedded clock simplifies PCB design and reduces PCB cost by narrowing data paths that in turn reduce PCB size and layers.
The single serial data stream also reduces cable size, the number of connectors, and eliminates clock-to-data and data-to-data skew.
Each channel also has an 8-level selectable pre-emphasis feature that significantly extends performance over lossy interconnect.
Each channel also has its own powerdown pin that saves power by reducing supply current when...

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SCAN921821 Dual 18-Bit Serializer - National Semiconductor

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