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부품번호 | SY100EL14V 기능 |
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기능 | 5V/3.3V 1:5 Clock Distribution | ||
제조업체 | Micrel Semiconductor | ||
로고 | |||
전체 7 페이지수
SY100EL14V
5V/3.3V 1:5 Clock Distribution
General Description
The SY100EL14V is a low-skew, 1:5 clock distribution chip
designed explicitly for low-skew clock distribution
applications. The device can be driven by either a
differential or single-ended ECL or, if positive power
supplies are used, PECL input signal. The EL14V is
suitable for operation in systems operating with 3.3V to
5.0V supplies. 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 EL14V under single-ended input conditions. As a
result, this pin can only source/sink up to 0.5mA of current.
The EL14V features a multiplexed clock input to allow for
the distribution of a lower speed scan or test clock along
with the high speed system clock. When LOW (or left open
and pulled LOW by the input pull-down resistor), the SEL
pin will select the differential clock input.
The common enable (/EN) is synchronous, so that the
outputs will only be enabled/disable when they are already
in the LOW state. This avoids any chance of generating a
runt clock pulse when the device is enabled/disabled as
can happen with an asynchronous control. The internal
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.
When both differential inputs are left open, CLK input will
pull down to VEE and /CLK input will bias around VCC/2.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Features
• 3.3V and 5V power supply options
• 70fsRMS typical additive phase jitter
• Typical 30ps output-to-output skew
• Max. 50ps output-to-output skew
• Synchronous enable/disable
• Multiplexed clock input
• 75kΩ internal input pull-down resistors
• Available in 20-pin SOIC package
Applications
• Processor clock distribution
• SONET clock distribution
• Fibre Channel clock distribution
• Gigabit Ethernet clock distribution
Block Diagram
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
October 16, 2014
Revision 5.0
[email protected] or (408) 955-1690
Micrel, Inc.
SY100EL14V
AC Electrical Characteristics
VEE = VEE (min) to VEE (max); VCC = GND, TA = –40°C to +85°C, unless otherwise stated.
Symbol Parameter
Condition
Min.
Typ.
Max.
Units
Propagation Delay
CLK to Q (Diff)
tPLH Propagation Delay
tPHL CLK to Q (SE)
Propagation Delay
SCLK to Q
Part-to-Part Skew(12)
tskew
Within-Device Skew
TA = –40°C
TA = 0°C
TA = +25°C
TA = +85°C
TA = –40°C
TA = 0°C
TA = +25°C
TA = +85°C
TA = –40°C
TA = 0°C
TA = +25°C
TA = +85°C
520 720
550 750
580 680 780
630 830
470 770
500 800
530 680 830
580 880
470 770
500 800
530 680 830
580 880
200
50
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
ps
tS
tH
VPP
VCMR
Setup Time /EN
Hold Time /EN
Minimum Input Swing, CLK
Common Mode Range(13)
tr/tf
Output Rise/Fall Time
Q (20% - 80%)
tJITTER
Additive Jitter
150
200
150
VPP < 500mV
TA = –40°C
VCC – 2.000
TA = 0°C to +85°C VCC – 2.100
VCC – 0.400
VCC – 0.400
VPP ≥ 500mV
TA = –40°C
VCC – 1.800
TA = 0°C to +85°C VCC – 1.900
VCC – 0.400
VCC – 0.400
TA = –40°C to +85°C
Typical value at TA = +25°C
230 360 500
Carrier = 622MHz
Integration Range: 12kHz to 20MHz
70
Carrier = 156.25MHz
Integration Range: 12kHz to 20MHz
155
ps
ps
mV
V
V
ps
fsRMS
Notes:
12. Skews are specified for identical LOW-to-HIGH or HIGH-to-LOW transitions.
13. The VCMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the
specified range and the peak-to-peak voltage lies between VPP(min) and 1V. The lower end of the VCMR range varies 1:1 with VEE. The numbers in
the specification table assume a nominal VEE of 3.3V. For PECL operation, the VCMR(min) will be fixed at 3.3V – |VCMR(min)|.
October 16, 2014
4 Revision 5.0
[email protected] or (408) 955-1690
4페이지 Micrel, Inc.
SY100EL14V
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high performance linear and power, LAN, and timing & communications
markets. The Company’s products include advanced mixed-signal, analog & power semiconductors; high-performance communication, clock
management, MEMs-based clock oscillators & crystal-less clock generators, Ethernet switches, and physical layer transceiver ICs. Company
customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products.
Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and
advanced technology design centers situated throughout the Americas, Europe, and Asia. Additionally, the Company maintains an extensive network
of distributors and reps worldwide.
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2006 Micrel, Incorporated.
October 16, 2014
7 Revision 5.0
[email protected] or (408) 955-1690
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부품번호 | 상세설명 및 기능 | 제조사 |
SY100EL14V | 5V/3.3V 1:5 Clock Distribution | Micrel Semiconductor |
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