ICS551MILF [IDT]
1 TO 4 CLOCK BUFFER; 1到4个时钟缓冲器
| 型号： | ICS551MILF |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | 1 TO 4 CLOCK BUFFER |
| 文件： | 总9页 (文件大小：192K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATASHEET
1 TO 4 CLOCK BUFFER
ICS551
Description
Features
The ICS551 is a low cost, high-speed single input to
four output clock buffer. Part of IDT’s ClockBlocks
family, this is our lowest cost, small clock buffer.
• Low skew (250 ps) outputs
• Pb-free packaging
TM
• Low cost clock buffer
• Packaged in 8-pin SOIC
See the ICS552-02B for monolithic dual version of the
ICS551 in a 20 pin QSOP.
• Input/Output clock frequency up to 160 MHz
• Non-inverting output clock
IDT makes many non-PLL and PLL based low skew
output devices as well as Zero Delay Buffers to
synchronize clocks. Contact IDT for all of your clocking
needs.
• Ideal for networking clocks
• Operating Voltages of 3.3 and 5.0 V
• Output Enable mode tri-states outputs
• Advanced, low power CMOS process
• Commercial and industrial temperature versions
Block Diagram
Q1
Q2
Q3
Q4
ICLK
Output Enable
IDT™ 1 TO 4 CLOCK BUFFER
1
ICS551
REV P 051310
ICS551
1 TO 4 CLOCK BUFFER
FAN OUT BUFFER
Pin Assignment
ICLK
Q1
1
2
3
4
8
7
6
5
OE
VDD
GND
Q4
Q2
Q3
8 Pin (150 mil) SOIC
Pin Descriptions
Pin
Number
Pin
Pin
Type
Pin Description
Name
ICLK
Q1
1
2
3
4
5
6
7
8
Input
Clock input. Internal pull-up resistor.
Output Clock output 1.
Output Clock output 2.
Output Clock output 3.
Output Clock output 4.
Power Connect to ground.
Power Connect to 3.3 V or 5.0 V.
Q2
Q3
Q4
GND
VDD
OE
Input
Output Enable. Tri-states outputs when low. Internal pull-up resistor.
External Components
A minimum number of external components are required for proper operation. A decoupling capacitor of
0.01 µF should be connected between VDD on pin 7 and GND on pin 6, as close to the device as possible.
A 33Ω series terminating resistor may be used on each clock output if the trace is longer than 1 inch.
IDT™ 1 TO 4 CLOCK BUFFER
2
ICS551
REV P 051310
ICS551
1 TO 4 CLOCK BUFFER
FAN OUT BUFFER
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the ICS551. These ratings, which
are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the
device at these or any other conditions above those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can
affect product reliability. Electrical parameters are guaranteed only over the recommended operating
temperature range.
Item
Rating
Supply Voltage, VDD
All Inputs and Outputs
7 V
-0.5 V to VDD+0.5 V
0 to +70° C
-40 to +85° C
-65 to +150° C
125°C
Ambient Operating Temperature, Commercial
Ambient Operating Temperature, Industrial
Storage Temperature
Junction Temperature
Soldering Temperature
260°C
Recommended Operation Conditions
Parameter
Min.
Typ.
Max.
+85
Units
° C
Ambient Operating Temperature
Power Supply Voltage (measured in respect to GND)
-40
–
+3.0
+5.5
V
IDT™ 1 TO 4 CLOCK BUFFER
3
ICS551
REV P 051310
ICS551
1 TO 4 CLOCK BUFFER
FAN OUT BUFFER
DC Electrical Characteristics
VDD=3.3 V ±±0% , Ambient temperature -40 to +85 °C, unless stated otherwise
Parameter
Symbol
Conditions
Min.
3.0
Typ.
Max.
3.6
Units
Operating Voltage
VDD
V
V
V
V
V
V
V
V
Input High Voltage, ICLK
Input Low Voltage, ICLK
Input High Voltage, OE
Input Low Voltage, OE
Output High Voltage
V
Note 1
Note 1
VDD/2+0.7
3.8
IH
V
VDD/2-0.7
VDD
IL
V
2
IH
V
0.8
IL
V
I
I
I
= -25 mA
= 25 mA
= -12 mA
2.4
OH
OH
OL
OH
Output Low Voltage
V
0.4
OL
Output High Voltage (CMOS
Level)
V
VDD-0.4
OH
Operating Supply Current
Nominal Output Impedance
Internal Pull-up Resistor
Input Capacitance
IDD
No load, 135 MHz
18
20
500
5
mA
Ω
Z
O
R
OE
kΩ
pF
mA
PU
C
OE pin
IN
Short Circuit Current
I
50
OS
VDD = 5 V ±±0% , Ambient temperature -40 to +85 °C, unless stated otherwise
Parameter
Symbol
Conditions
Min.
4.5
Typ.
Max.
5.5
Units
Operating Voltage
VDD
V
V
V
V
V
V
V
V
Input High Voltage, ICLK
Input Low Voltage, ICLK
Input High Voltage, OE
Input Low Voltage, OE
Output High Voltage
V
Note 1
Note 1
VDD/2+1
5.5
IH
V
VDD/2-1
VDD
0.8
IL
V
2
IH
V
IL
V
I
I
I
= -35 mA
= 35 mA
= -12 mA
2.4
OH
OH
OL
OH
Output Low Voltage
V
0.4
OL
Output High Voltage (CMOS
Level)
V
VDD-0.4
OH
Operating Supply Current
Nominal Output Impedance
Internal Pull-up Resistor
Input Capacitance
IDD
No load, 135 MHz
35
20
220
5
mA
Ω
Z
O
R
OE
kΩ
pF
mA
PU
C
OE pin
IN
Short Circuit Current
I
80
OS
Notes: 1. Nominal switching threshold is VDD/2.
IDT™ 1 TO 4 CLOCK BUFFER
4
ICS551
REV P 051310
ICS551
1 TO 4 CLOCK BUFFER
FAN OUT BUFFER
AC Electrical Characteristics
VDD = 3.3 V ±±0%, Ambient Temperature -40 to +85 ° C, unless stated otherwise
Parameter
Symbol
Conditions
Min.
Typ. Max. Units
Input Frequency
0
160
160
1.0
1.0
8
MHz
MHz
ns
Output Frequency
15 pF load, Note 4
0.8 to 2.0 V
Output Clock Rise Time
Output Clock Fall Time
Propagation Delay
t
OR
t
2.0 to 0.8 V
ns
OF
Note 1
Note 2
135 MHz
2
4
ns
Output to Output Skew
Rising edges at VDD/2
250
ps
VDD = 5 V ±±0%, Ambient Temperature -40 to +85 ° C, unless stated otherwise
Parameter
Symbol
Conditions
Min.
Typ. Max. Units
Input Frequency
0
135
135
1.0
1.0
6
MHz
MHz
ns
Output Frequency
15 pF load, Note 4
0.8 to 2.0 V
Output Clock Rise Time
Output Clock Fall Time
Propagation Delay
t
OR
t
2.0 to 0.8 V
ns
OF
Note 1
Note 2
135 MHz
1.5
3
ns
Output to Output Skew
Rising edges at VDD/2
250
ps
Notes:
1. With rail to rail input clock.
2. Between any 2 outputs with equal loading.
3. Duty cycle on outputs will match incoming clock duty cycle. Consult IDT for tight duty cycle clock
generators.
4. With external series resistor of 33Ω positioned close to each output pin.
Marking Diagram (ICS55±MLF)
Marking Diagram (ICS55±MLN)
8
5
8
5
551MLN
######
YYWW
551MLF
######
YYWW
1
4
1
4
IDT™ 1 TO 4 CLOCK BUFFER
5
ICS551
REV P 051310
ICS551
1 TO 4 CLOCK BUFFER
FAN OUT BUFFER
Marking Diagram (ICS55±MILF)
8
5
551MILF
######
YYWW
1
4
Notes:
1. ###### is the lot number.
2. YYWW is the last two digits of the year and week that the part was assembled.
3. “LF” denotes Pb (lead) free package.
4. Bottom marking: (origin)
Origin = country of origin if not USA.
IDT™ 1 TO 4 CLOCK BUFFER
6
ICS551
REV P 051310
ICS551
1 TO 4 CLOCK BUFFER
FAN OUT BUFFER
Package Outline and Package Dimensions (8-pin SOIC, ±50 Mil. Narrow Body)
Package dimensions are kept current with JEDEC Publication No. 95
Millimeters
Inches
8
Symbol
Min
Max
1.75
0.25
0.51
0.25
5.00
4.00
Min
Max
A
A1
B
C
D
E
e
1.35
0.10
0.33
0.19
4.80
3.80
.0532
.0040
.013
.0688
.0098
.020
E
H
INDEX
AREA
.0075
.1890
.1497
.0098
.1968
.1574
1.27 BASIC
0.050 BASIC
1
2
H
h
5.80
6.20
0.50
1.27
8°
.2284
.010
.016
0°
.2440
.020
.050
8°
D
0.25
0.40
0°
L
α
A
h x 45
A1
C
- C -
e
SEATING
PLANE
B
L
.±0 (.004)
C
IDT™ 1 TO 4 CLOCK BUFFER
7
ICS551
REV P 051310
ICS551
1 TO 4 CLOCK BUFFER
FAN OUT BUFFER
Ordering Information
Part / Order Number
551MLF
Marking
551MLF
551MLF
551MLN
551MLN
551MILF
551MILF
Shipping Packaging
Tubes
Package
8-pin SOIC
8-pin SOIC
8-pin SOIC
8-pin SOIC
8-pin SOIC
8-pin SOIC
Temperature
0 to +70 ° C
0 to +70 ° C
0 to +70 ° C
0 to +70 ° C
-40 to +85 ° C
-40 to +85 ° C
551MLFT
551MLN
Tape and Reel
Tubes
551MLNT
551MILF
551MILFT
Tape and Reel
Tubes
Tape and Reel
"LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.
“LN” denotes parts that are Pb free and annealed.
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT)
assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result
from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial
applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary
environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any
circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or
critical medical instruments.
IDT™ 1 TO 4 CLOCK BUFFER
8
ICS551
REV P 051310
ICS551
1 TO 4 CLOCK BUFFER
FAN OUT BUFFER
Innovate with IDT and accelerate your future networks. Contact:
www.IDT.com
For Sales
800-345-7015
408-284-8200
Fax: 408-284-2775
For Tech Support
www.idt.com/go/clockhelp
Corporate Headquarters
Integrated Device Technology, Inc.
www.idt.com
© 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device
Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered
trademarks used to identify products or services of their respective owners.
Printed in USA
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