Datasheet Texas Instruments SCAN921821 — Datenblatt

SCAN921821
www.ti.com SNLS173C – SEPTEMBER 2004 – REVISED APRIL 2013 SCAN921821 Dual 18-Bit Serializer with Pre-emphasis, IEEE 1149.1 (JTAG), and At-Speed
BIST
Check for Samples: SCAN921821 FEATURES DESCRIPTION The SCAN921821 is a dual channel 18-bit serializer
featuring signal conditioning, boundary SCAN, and atspeed BIST. Each serializer block transforms an 18bit 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. 1 2 15-66 MHz Dual 18:1 Serializer with 2.376 Gbps
Total Throughput
8-level Selectable Pre-emphasis on Each
Channel Drives Lossy Cables and Backplanes
>15kV HBM ESD Protection on Bus LVDS I/O
Pins
Robust BLVDS Serial Data Transmission with
Embedded Clock for Exceptional Noise
Immunity and Low EMI
Power Saving Control Pin for Each Channel
IEEE 1149.1 "JTAG" Compliant
At-Speed BIST -PRBS Generation …