Differential Signaling Technologies & Devices Video Lecture | Digital Electronics - Electrical Engineering (EE)

hi my name is Rajesh Annabella and i'm
the product marketing engineer for
communications interface products at
texas instruments today I'm going to
discuss the eyes lv pagal pagal easier
buffer family Pekel stands for positive
emitter coupled logic and typically uses
files and ground supply voltage hell
Rebecca stands for low voltage positive
emitter coupled logic and it typically
uses 3.3 olds and ground supply voltage
there are many differential signaling
technologies available today such as
lvds em lvds CML and pickle each of
these technologies were developed for
different application requirements to
address different signaling rates for
example lvds is a loaded signaling
standard that is defined by dia EIA 644
for high speed low power needs the
standard specifies a theoretical maximum
of 2 gigabits per second signaling rates
on the other hand peggle focuses on
ultra high speed signaling needs
typically pekel can handle from one
gigabits per second to Phi gigabits per
second signaling rates now let us
discuss the characteristics of lvds and
pekel signals as summarized in the table
lvds provide the smallest swing of 350
millions and a common mode range of plus
or minus one old around its VOS as
result lvds as limitations when trying
to drive high frequency signals over a
given media on the other hand pickle
provides a wider output voltage swing
between 700 to 800 millions and a higher
common mode levels typically 3.6 holes
for a 5 old supply voltage these
characteristics make the technology is
more suitable for applications that need
to transmit data at higher frequencies
over long distances lvds buffers are
often used for point-to-point
transmission of clock and data signals
Texas Instruments offers a wide range of
lv pickle pickle and echo signal buffers
and translator devices which speeds
ranging from 300 megahertz up to 3.8
hurts here are some applications where
pickle buffers are typically used data
communications medical imaging and
automated test equipment why is TI
speckle devices TI is lv peko peko land
ECL devices have been designed to
provide wider frequency ranges twenty
percent lower power consumption
compatible competition all of these
devices from t i also have a built-in
temperature compensation which
guarantees the performance of the device
over temperature range these enhanced
capabilities are provided in industry
standard footprints one of our featured
devices is the essence 65 ELT 20 this is
a TTL to differential pickle translator
device that operates on a 5 old supply
this device also has a flow-through
pinout which enables easy layout and is
available in an eight pen tssop package
this is a classic building block for
translation of signals the second device
I'm going to discuss this the essence 65
l ve l t 2 3 which is a low-power dual
channel 3.3 old lv pagal to lv TTL
buffer translator these device as an
internal input pull-up and pull-down
resistor and built-in temperature
compensation this device is ideal for
use and system clock distribution as
well as interface between fpgas and ASSP
devices to find more info on these
devices and to request samples please
visit us at wwt pickle thanks for
watching
you