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Integrated Device Technology Electronic Components Datasheet

ICS843021I-01 Datasheet

FEMTOCLOCKS CRYSTAL-TO-3.3V 2.5V LVPECL CLOCK GENERATOR

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ICS843021I-01 pdf
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FEMTOCLOCKS™ CRYSTAL-TO-
3.3V, 2.5V LVPECL CLOCK GENERATOR
General Description
The ICS843021I-01 is a Gigabit Ethernet Clock
ICS Generator and a member of the HiPerClocksTM
HiPerClockS™ family of high performance devices from IDT. The
ICS843021I-01 uses a 25MHz crystal to synthesize
125MHz. The ICS843021I-01 has excellent phase
jitter performance, over the 1.875MHz – 20MHz integration range.
The ICS843021I-01 is packaged in a small 8-pin TSSOP, making it
ideal for use in systems with limited board space.
ICS843021I-01
Features
One differential 3.3V or 2.5V LVPECL output
Crystal oscillator interface designed for 25MHz,
18pF parallel resonant crystal
Output frequency range: 125MHz, using a 25MHz crystal
VCO range: 490MHz – 640MHz
RMS phase jitter @ 125MHz, using a 25MHz crystal
(1.875MHz – 20MHz): 0.41ps (typical)
Full 3.3V or 2.5V operating supply
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
Block Diagram
OE Pullup
25MHz
XTAL_IN
OSC
XTAL_OUT
Phase
Detector
VCO
÷20
(fixed)
÷4
(fixed)
Pin Assignment
VCC 1
8Q
XTAL_OUT 2
7 nQ
XTAL_IN 3
6 VCC
Q
VEE 4
5 OE
nQ
ICS843021I-01
8 Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
Top View
IDT™ / ICS™ 3.3V , 2.5V LVPECL CLOCK GENERATOR
1
ICS843021AGI-01 REV. A DECEMBER 3, 2007



Integrated Device Technology Electronic Components Datasheet

ICS843021I-01 Datasheet

FEMTOCLOCKS CRYSTAL-TO-3.3V 2.5V LVPECL CLOCK GENERATOR

No Preview Available !

ICS843021I-01 pdf
ICS843021I-01
FEMTOCLOCKS™CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
www.DataSheet4U.com
Table 1. Pin Descriptions
Number
1, 8
2,
3
4
5
7, 8
Name
VCC
XTAL_OUT
XTAL_IN
VEE
OE
nQ, Q
Type
Power
Input
Power
Input
Pullup
Output
Description
Power supply pins.
Crystal oscillator interface. XTAL_IN is the input, XTAL_OUT is the output.
Negative supply pin.
Active high output enable. When logic HIGH, the outputs are enabled and
active. When logic LOW, the outputs are disabled and are in a high impedance
state. LVCMOS/LVTTL interface levels.
Differential output pair. LVPECL interface levels.
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Symbol
CIN
RPULLUP
Parameter
Input Capacitance
Input Pullup Resistor
Test Conditions
Minimum
Typical
4
51
Maximum
Units
pF
k
IDT™ / ICS™ 3.3V , 2.5V LVPECL CLOCK GENERATOR
2
ICS843021AGI-01 REV. A DECEMBER 3, 2007



Integrated Device Technology Electronic Components Datasheet

ICS843021I-01 Datasheet

FEMTOCLOCKS CRYSTAL-TO-3.3V 2.5V LVPECL CLOCK GENERATOR

No Preview Available !

ICS843021I-01 pdf
ICS843021I-01
FEMTOCLOCKS™CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
www.DataSheet4U.com
Absolute Maximum Ratings
NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
These ratings are stress specifications only. Functional operation 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
extended periods may affect product reliability.
Item
Supply Voltage, VCC
Inputs, VI
Outputs, IO
Continuos Current
Surge Current
Package Thermal Impedance, θJA
Storage Temperature, TSTG
Rating
4.6V
-0.5V to VCC+ 0.5V
50mA
100mA
129.5°C/W (0 mps)
-65°C to 150°C
DC Electrical Characteristics
Table 3A. Power Supply DC Characteristics, VCC = 3.3V ± 5%, VEE = 0V, TA = -40°C to 85°C
Symbol Parameter
Test Conditions
Minimum Typical
VCC Positive Supply Voltage
IEE Power Supply Current
3.135
3.3
Maximum
3.465
64
Units
V
mA
Table 3B. Power Supply DC Characteristics, VCC = 2.5V ± 5%, VEE = 0V, TA = -40°C to 85°C
Symbol Parameter
Test Conditions
Minimum Typical
VCC Positive Supply Voltage
IEE Power Supply Current
2.375
2.5
Maximum
2.625
62
Units
V
mA
Table 3C. LVCMOS/LVTTL DC Characteristics, VCC = 3.3V ± 5% or 2.5V ± 5%, VEE = 0V, TA = 0°C to 70°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum
VIH Input High Voltage
VIL Input Low Voltage
IIH Input High Current
IIL Input Low Current
VCC = 3.3V
VCC = 2.5V
VCC = 3.3V
VCC = 2.5V
VCC = VIN = 3.465 or 2.625V
VCC = 3.465V or 2.625V, VIN = 0V
2
1.7
-0.3
-0.3
-150
VCC + 0.3
VCC + 0.3
0.8
0.7
5
Units
V
V
V
µA
µA
IDT™ / ICS™ 3.3V , 2.5V LVPECL CLOCK GENERATOR
3
ICS843021AGI-01 REV. A DECEMBER 3, 2007




Part Number ICS843021I-01
Description FEMTOCLOCKS CRYSTAL-TO-3.3V 2.5V LVPECL CLOCK GENERATOR
Maker Integrated Device Technology
Total Page 15 Pages
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