ICS840AM-275TLF [IDT]
Clock Generator, 75MHz, PDSO8, 3.90 X 4.92 MM, 1.37 MM HEIGHT, ROHS COMPLIANT, MS-012, SOIC-8;
| 型号： | ICS840AM-275TLF |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Clock Generator, 75MHz, PDSO8, 3.90 X 4.92 MM, 1.37 MM HEIGHT, ROHS COMPLIANT, MS-012, SOIC-8 时钟 光电二极管 外围集成电路 晶体 |
| 文件： | 总10页 (文件大小：548K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY
75MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
ICS840-275
GENERAL DESCRIPTION
FEATURES
The ICS840-275 is a SAS/SATA Oscillator
• Two LVCMOS/LVTTL output, 15Ω output impedence
ICS
HiPerClockS™
Replacement and a member of the HiPerClocksTM
family of high performance devices from IDT. The
ICS840-275 uses a 25MHz crystal to synthesize
75MHz. The ICS840-275 has excellent jitter
• Crystal oscillator interface designed for 25MHz,
18pF parallel resonant crystal
• Output frequency: 75MHz
performance.The ICS840-275 is packaged in a small 8-pin SOIC,
making it ideal for use in systems with limited board space.
• Random jitter: 3ps (typical)
• Deterministic jitter: 0.2ps (typical)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
BLOCK DIAGRAM
PIN ASSIGNMENT
Pullup
OE
VDD
XTAL_OUT
XTAL_IN
OE
Q1
1
2
3
4
8
7
6
5
Q0
VDDO
GND
75MHz
25MHz
Q0
XTAL_IN
ICS840-275
Clock
Synthesizer
8-Lead SOIC
3.90mm x 4.92mm x 1.37mm body package
M Package
XTAL_OUT
Q1
Top View
The Preliminary Information presented herein represents a product in pre-production.The noted characteristics are based on initial product characterization
and/or qualification.Integrated DeviceTechnology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.
IDT™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
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ICS840AM-275 REV A OCTOBER 3, 2006
ICS840-275
75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1
VDD
Power
Input
Power supply pin.
XTAL_OUT,
XTAL_IN
Crystal oscillator interface. XTAL_IN is the input,
XTAL_OUT is the output.
Output enable pin. When HIGH, Qx outputs are enabled. When LOW,
forces Qx outputs to HiZ state. LVCMOS/LVTTL interface levels.
2, 3
4
OE
Input
Pullup
5
6
GND
VDDO
Power
Power
Power supply ground.
Output supply pin.
Single-ended clock outputs. LVCMOS/LVTTL interface levels.
15Ω output impedence.
7, 8
Q0, Q1
Output
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol Parameter
Test Conditions
Minimum
Typical Maximum Units
CIN
Input Capacitance
4
pF
kΩ
Ω
RPULLUP
ROUT
Input Pullup Resistor
Output Impedance
51
15
TABLE 3. CONTROL FUNCTION TABLE
Control Inputs
Output
Q0, Q1
Hi-Z
OE
0
1
Active
IDT™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
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ICS840-275
75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VDD
4.6V
NOTE: Stresses beyond those listed under Absolute
Maximum Ratings may cause permanent damage to the
device.These ratings are stress specifications only. Functional op-
eration of product at these conditions or any conditions beyond
those listed in the DC Characteristics or AC Characteristics is not
implied. Exposure to absolute maximum rating conditions for ex-
tended periods may affect product reliability.
Inputs, V
-0.5V to VDD + 0.5 V
-0.5V to VDDO + 0.5V
112.7°C/W (0 lfpm)
-65°C to 150°C
I
Outputs, VO
Package Thermal Impedance, θ
JA
Storage Temperature, T
STG
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 3.3V 0.3V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum
3.0
Typical
3.3
Maximum Units
VDD
VDDO
IDD
Power Supply Voltage
3.6
3.6
80
V
Output Supply Voltage
Power Supply Current
Output Supply Current
3.0
3.3
V
OE = VDD (output enabled)
mA
mA
IDDO
20
TABLE 4B. LVCMOS/LVTTL DC CHARACTERISTICS, VDD = VDDO = 3.3V 0.3V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
VIH
VIL
IIH
Input High Voltage
2
VDD + 0.3
V
V
Input Low Voltage
-0.3
0.8
5
Input High Current
VDD = VIN = 3.6V
µA
µA
V
IIL
Input Low Current
VDD = 3.6V, VIN = 0V
-150
2.6
VOH
VOL
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
0.5
V
NOTE 1: Outputs terminated with 50Ω to VDDO/2. See Parameter Measurement Information Section,
"3.3V Output Load Test Circuit".
TABLE 5. CRYSTAL CHARACTERISTICS
Parameter
Test Conditions
Minimum
Typical Maximum Units
Fundamental
25
Mode of Oscillation
Frequency
MHz
Ω
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
40
7
pF
300
µW
IDT™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
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ICS840AM-275 REV A OCTOBER 3, 2006
ICS840-275
75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
TABLE 6. AC CHARACTERISTICS, VDD = VDDO = 3.3V 0.3V, TA = -40°C TO 85°C
Symbol Parameter
fOUT Output Frequency
tDJ
Test Conditions
Minimum Typical Maximum Units
75
0.2
3
MHz
ps
Deterministic Jitter; NOTE 1
Random Jitter; NOTE 1
tRJ
ps
RMS of Total Distribution (σ);
tRMS
tp-p
3
ps
ps
NOTE 1
Peak-to-Peak Jitter; NOTE 1
28
Time at minimum operating voltage
to be 0 s
tOSC
Oscillation Start Up Time
10
ms
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
700
50
ps
%
NOTE 1: Measured using Wavecrest SIA-3000.
IDT™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
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ICS840-275
75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
PARAMETER MEASUREMENT INFORMATION
1.65V 0.15V
VDDO
2
SCOPE
Q0, Q1
VDD,
VDDO
tPW
tPERIOD
Qx
LVCMOS
GND
tPW
x 100%
odc =
tPERIOD
-1.65V 0.15V
3.3V OUTPUT LOAD AC TEST CIRCUIT
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
80%
tF
80%
20%
20%
Clock
Outputs
tR
OUTPUT RISE/FALL TIME
IDT™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
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ICS840-275
75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
APPLICATION INFORMATION
RECOMMENDATIONS FOR UNUSED OUTPUT PINS
OUTPUTS:
LVCMOS OUTPUT:
All unused LVCMOS output can be left floating. We recommend
that there is no trace attached.
CRYSTAL INPUT INTERFACE
The ICS840-275 has been characterized with 18pF parallel
resonant crystals. The capacitor values, C1 and C2, shown in
Figure 1 below were determined using a 25MHz, 18pF parallel
resonant crystal and were chosen to minimize the ppm error. The
optimum C1 and C2 values can be slightly adjusted for
different board layouts.
XTAL_OUT
XTAL_IN
C1
12p
X1
18pF Parallel Cry stal
C2
12p
FIGURE 1. CRYSTAL INPUt INTERFACE
IDT™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
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75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
RELIABILITY INFORMATION
TABLE 7. θ VS. AIR FLOW TABLE 8 LEAD SOIC
JA
θ by Velocity (Linear Feet per Minute)
JA
0
200
128.5°C/W
103.3°C/W
500
115.5°C/W
97.1°C/W
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
153.3°C/W
112.7°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
TRANSISTOR COUNT
The transistor count for ICS840-275 is: 2423
IDT™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
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ICS840AM-275 REV A OCTOBER 3, 2006
ICS840-275
75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
PACKAGE OUTLINE - M SUFFIX FOR 8 LEAD SOIC
TABLE 8. PACKAGE DIMENSIONS
Millimeters
MINIMUM MAXIMUM
SYMBOL
N
A
A1
B
C
D
E
e
8
1.35
0.10
0.33
0.19
4.80
3.80
1.75
0.25
0.51
0.25
5.00
4.00
1.27 BASIC
H
h
5.80
0.25
0.40
0°
6.20
0.50
1.27
8°
L
α
Reference Document:JEDEC Publication 95, MS-012
IDT™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
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ICS840AM-275 REV A OCTOBER 3, 2006
ICS840-275
75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
TABLE 9. ORDERING INFORMATION
Part/Order Number
ICS840AM-275
Marking
840AM275
840AM275
TBD
Package
8 lead SOIC
Shipping Packaging Temperature
tube
0°C to 70°C
ICS840AM-275T
ICS840AM-275LF
ICS840AM-275LFT
8 lead SOIC
2500 tape & reel
tube
0°C to 70°C
0°C to 70°C
0°C to 70°C
8 lead "Lead-Free" SOIC
8 lead "Lead-Free" SOIC
TBD
2500 tape & reel
NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated (IDT) assumes no responsibility for either its use or for
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 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™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT
9
ICS840AM-275 REV A OCTOBER 3, 2006
ICS840-275
75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT
PRELIMINARY
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
netcom@idt.com
480-763-2056
Corporate Headquarters
Integrated Device Technology, Inc.
6024 Silver Creek Valley Road
San Jose, CA 95138
Asia Pacific and Japan
Integrated Device Technology
Singapore (1997) Pte. Ltd.
Reg. No. 199707558G
435 Orchard Road
Europe
IDT Europe, Limited
321 Kingston Road
Leatherhead, Surrey
KT22 7TU
United States
800 345 7015
#20-03 Wisma Atria
England
+408 284 8200 (outside U.S.)
Singapore 238877
+44 (0) 1372 363 339
Fax: +44 (0) 1372 378851
+65 6 887 5505
© 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS 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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