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SCAN921821

Features: 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 an...

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SCAN921821: Features: 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 ...

SCAN921821 Data Sheet

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Part Number:
SCAN921821
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

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
No external coding required
Internal PLL, no external PLL components required
Single +3.3V power supply
Low power: 260 mW (typ) per channel at 66 MHz with PRBS-15 pattern
Single 3.3 V supply
Fabricated with advanced CMOS process technology
Industrial −40 to +85°C temperature range
Compact 100-ball FBGA package


Specifications

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications.
Supply Voltage (VDD)                                                                          −0.3V to +4V
Supply Voltage (VDD)
Ramp Rate                                                                                          < 30 V/ms
LVCMOS/LVTTL Input
Voltage                                                                                               −0.3V to (VDD +0.3V)
LVCMOS/LVTTL Output
Voltage                                                                                               −0.3V to (VDD +0.3V)
Bus LVDS Driver Output
Voltage                                                                                                −0.3V to +3.9V
Bus LVDS Output Short
Circuit Duration                                                                                   10ms
Junction Temperature                                                                         +150°C
Storage Temperature                                                                         −65°C to +150°C
Lead Temperature
(Soldering, 4 seconds)                                                                       +220°C
Maximum Package Power Dissipation at 25°C
FBGA-100                                                                                           3.57 W
Derating Above 25°C                                                                        28.57 mW/°C
Thermal resistance JA                                                                      35°C/W
JC                                                                                                   11.1°C/W
ESD Rating
HBM, 1.5 K, 100 pF
All pins                                                                                              >8 kV
Bus LVDS pins                                                                                   >15 kV
MM, 0, 200 pF                                                                                 >1200 V
CDM                                                                                                  >2 kV


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 the channel is not being used.

The SCAN921821 also incorporates advanced testability features including IEEE 1149.1 and at-speed BIST PRBS pattern generation to facilitate verification of board and link




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