SN65LVDS108_14 Datasheet, PDF (1/21 Pages) Texas Instruments – 8-PORT LVDS REPEATER

SN65LVDS108
www.ti.com
SLLS399E – NOVEMBER 1999 – REVISED FEBRUARY 2005
8-PORT LVDS REPEATER
FEATURES
• One Line Receiver and Eight Line Drivers
Configured as an 8-Port LVDS Repeater
• Line Receiver and Line Drivers Meet or
Exceed the Requirements of ANSI EIA/TIA-644
Standard
• Typical Data Signaling Rates to 400 Mbps or
Clock Frequencies to 400 MHz
• Enabling Logic Allows Individual Control of
Each Driver Output, Plus All Outputs
• Low-Voltage Differential Signaling With
Typical Output Voltage of 350 mV and a 100-Ω
Load
• Electrically Compatible With LVDS, PECL,
LVPECL, LVTTL, LVCMOS, GTL, BTL, CTT,
SSTL, or HSTL Outputs With External
Termination Networks
• Propagation Delay Times < 4.7 ns
• Output Skew Less Than 300 ps and
Part-to-Part Skew Less Than 1.5 ns
• Total Power Dissipation at 200 MHz Typically
Less Than 330 mW With 8 Channels Enabled
• Driver Outputs or Receiver Input Equals High
Impedance When Disabled or With V_CC < 1.5 V
• Bus-Pin ESD Protection Exceeds 12 kV
• Packaged in Thin Shrink Small-Outline
Package With 20-Mil Terminal Pitch
DBT PACKAGE
(TOP VIEW)
GND ₁
V_{CC 2}
GND ₃
NC ₄
ENM ₅
ENA ₆
ENB 7
ENC 8
END 9
A 10
B 11
ENE 12
ENF 13
ENG 14
ENH 15
NC 16
GND 17
V_CC 18
GND 19
38 ^NC
37 ^AY
36 ^AZ
35 ^BY
34 ^BZ
33 ^CY
32 ^CZ
31 ^DY
30 ^DZ
29 ^EY
28 ^EZ
27 ^FY
26 FZ
25 GY
24 GZ
23 HY
22 HZ
21 NC
20 NC
NC – No internal connection
DESCRIPTION
The SN65LVDS108 is configured as one differential line receiver connected to eight differential line drivers.
Individual output enables are provided for each output and an additional enable is provided for all outputs.
The line receivers and line drivers implement the electrical characteristics of low-voltage differential signaling
(LVDS). LVDS, as specified in EIA/TIA-644, is a data signaling technique that offers low power, low noise
emission, high noise immunity, and high switching speeds. (Note: The ultimate rate and distance of data transfer
is dependent upon the attenuation characteristics of the media, the noise coupling to the environment, and other
system characteristics.)
The intended application of this device, and the LVDS signaling technique, is for point-to-point or
point-to-multipoint (distributed simplex) baseband data transmission on controlled impedance media of
approximately 100 Ω. The transmission media may be printed-circuit board traces, backplanes, or cables. The
large number of drivers integrated into the same silicon substrate, along with the low pulse skew of balanced
signaling, provides extremely precise timing alignment of the signals being repeated from the inputs. This is
particularly advantageous for implementing system clock or data distribution trees.
The SN65LVDS108 is characterized for operation from –40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2005, Texas Instruments Incorporated