SY100EL34 Datasheet PDF Download, Micrel Semiconductor





(PDF) SY100EL34 Datasheet Download

Part Number SY100EL34
Description CLOCK GENERATION CHIP
Manufacture Micrel Semiconductor
Total Page 7 Pages
PDF Download Download SY100EL34 Datasheet PDF

Features: NOT RECOMMENDED FOR NEW DESIGNS SY10EL34 /L SY100EL34/L 5V/3.3V ÷2, ÷4, ÷8 Cl ock Generation Chip Precision Edge® G eneral Description The SY10/100EL34/L a re low-skew ÷2, ÷4, ÷8 clock generat ion chips designed explicitly for low-s kew clock generation applications. The internal dividers are synchronous to ea ch other; therefore, the common output edges are all precisely aligned. The de vices can be driven by either a differe ntial or single-ended ECL or, if positi ve power supplies are used, PECL input signal. In addition, by using the VBB o utput, a sinusoidal source can be ACcou pled into the device. If a single-ended input is to be used, the VBB output sh ould be connected to the CLK input and bypassed to ground via a 0.01µF capaci tor. The VBB output is designed to act as the switching reference for the inpu t of the EL34/L under single-ended inpu t conditions. As a result, this pin can only source/ sink up to 0.5mA of curre nt. The common enable ( EN ) is synchronous so that the internal divide.

Keywords: SY100EL34, datasheet, pdf, Micrel Semiconductor, CLOCK, GENERATION, CHIP, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute, Equivalent

NOT RECOMMENDED FOR NEW DESIGNS
SY10EL34/L
SY100EL34/L
5V/3.3V ÷2, ÷4, ÷8 Clock Generation Chip
Precision Edge®
General Description
The SY10/100EL34/L are low-skew ÷2, ÷4, ÷8 clock
generation chips designed explicitly for low-skew clock
generation applications. The internal dividers are
synchronous to each other; therefore, the common output
edges are all precisely aligned. The devices can be driven
by either a differential or single-ended ECL or, if positive
power supplies are used, PECL input signal. In addition,
by using the VBB output, a sinusoidal source can be AC-
coupled into the device. If a single-ended input is to be
used, the VBB output should be connected to the CLK
input and bypassed to ground via a 0.01µF capacitor. The
VBB output is designed to act as the switching reference for
the input of the EL34/L under single-ended input
conditions. As a result, this pin can only source/ sink up to
0.5mA of current.
The common enable ( EN ) is synchronous so that the
internal dividers will only be enabled/disabled when the
internal clock is already in the LOW state. This avoids any
chance of generating a runt clock pulse on the internal
clock when the device is enabled/disabled as can happen
with an asynchronous control. An internal runt pulse could
lead to losing synchronization between the internal divider
stages. The internal enable flip-flop is clocked on the
falling edge of the divider stages. The internal enable flip-
flop is clocked on the falling edge of the input clock;
therefore, all associated specification limits are referenced
to the negative edge of the clock input.
Upon start-up, the internal flip-flops will attain a random
state; the master reset (MR) input allows for the
synchronization of the internal dividers, as well as for
multiple EL34/Ls in a system.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
Precision Edge®
3.3V and 5V power supply options
50ps output-to-output skew
Synchronous enable/disable
Master Reset for synchronization
Internal 75Kinput pull-down resistors
Available in 16-pin SOIC package
Pin Description
Pin Name
CLK
EN
MR
VBB
Q0
Q1
Q2
Pin Function
Differential clock inputs.
Synchronous enable.
Master reset.
Reference output.
Differential ÷2 outputs.
Differential ÷4 outputs.
Differential ÷8 outputs.
Precision Edge is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
December 2011
M9999-120611-I
hbwhelp@micrel.com or (408) 955-1690

                    






Index : 0  1  2  3   4  5  6  7   8  9  A  B   C  D  E  F   G  H  I  J   K  L  M  N   O  P  Q  R   S  T  U  V   W  X  Y  Z
@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)