Integrated
Circuit
Systems, Inc.
ICS9107C-21
ICS9107C-22
Preliminary Product Preview
Frequency Generator for Fibre Channel Systems
General Description
The
ICS9107C-21
and
ICS9107C-22
are high-speed clock
generators designed to support fibre channel system
requirements. The
ICS9107C-21
generates a single copy of
the 106.25 MHz from a 17 MHz crystal. The
ICS9107C-22
provides a second copy of the 106.25 MHz clock with output
skew less than ±100ps.
An exact frequency multiplying ratio ensures better than
±100 ppm frequency accuracy using a standard AT crystal
with external load capacitors (typically 33pF±5% for an
18pF load crystal). Achieving ±100 ppm over four years
requires the crystal to have a ±20 ppm initial accuracy, ±30
ppm temperature and ±5 ppm/year aging coefficients.
Features
•
•
•
•
•
•
•
•
Generates one or two 106.25 MHz clocks from a 17
MHz crystal
Less than 60ps one sigma jitter
Less than ±200ps absolute jitter
Output skew less than ±100ps on two channel
version (-22)
Rise/fall times less than 4ns driving 15pF
On-chip loop filter components
5.5V supply range
8-pin, 150-mil SOIC package
Applications
•
Specifically designed to support the high-speed
clocking requirements of fibre channel systems
Block Diagram
9107C-21/22 Rev C 9/14/99
PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change
without notice.
ICS9107C-21
ICS9107C-22
Preliminary Product Preview
Pin Configurations
8-Pin SOIC
8-Pin SOIC
Functionality
OE
1
0
X1, X2
(MHz)
17.00
X
FOUT
(MHz)
106.25
Tristate
Pin Descriptions
PIN
NUMBER PIN NAME
1
AGND
2
GND
3
4
5
6
7
8
X1
X2
OE
VDD
CLK2
AVDD
VDD+AV-
DD
CLK1
TYPE
PWR
PRW
DESCRIPTION
Analog ground.
Digital Ground.
Crystal or clock input to device; nominally 17.0 MHz. Requires external load
IN
capacitors.
IN
Crystal drive output from device. Requires external load capacitors.
IN
Output enable causes all outputs to tristate when at a logic low level; has a pull-up.
PWR +5.0 volt supply (-21).
OUT 106.25 MHz clock output (-22).
PWR
PWR
Analog power. (Must equal digital power voltage) (-21).
Digital and analog power, +5.0 volt supply (-22).
OUT 106.25 MHz clock output.
2
ICS9107C-21
ICS9107C-22
Preliminary Product Preview
Absolute Maximum Ratings
AVDD, VDD referenced to GND . . . . . . . . . . . . . . . 7V
Operating temperature under bias. . . . . . . . . . . . . . . . 0°C to +70°C
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Voltage on I/O pins referenced to GND. . . . . . . . . . . GND -0.5V to VDD +0.5V
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 Watts
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
This is a stress rating only and 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 may affect product reliability.
Electrical Characteristics at 5.0V
Operating V
DD
= +4.5V to +5.5V; T
A
=0°C to 70°C unless otherwise stated
PARAMETER
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
Output Low Voltage
1
Output High Voltage
1
Output Low Current
1
Output High Current
1
Supply Current
Pull-up Resistor
1
Rise Time
Fall Time
1
Rise Time
1
Fall Time
1
Duty Cycle
1
Jitter, One Sigma
1
Jitter, Absolute
1
Output Skew,
1
Clock 1 to 2
Input Frequency
1
Output Frequency
1
Power-up Time
1
Transition Time
1
Crystal Input Capacitance
1
1
SYMBOL
V
IL
V
IH
I
IL
I
IH
V
OL
V
OH
I
OL
I
OH
I
DD
R
pu
T
r1
T
f1
T
r2
T
f2
D
t
T
j1s
T
jab
t
sk1
F
i
F
o
T
pu
T
ft
C
inx
DC Characteristics
TEST CONDITIONS
V
IN
=0V (Pull-up input)
V
IN
=V
DD
I
OL
=10mA
I
OH
=-30mA
V
OL
=0.8V
V
OH
=2.0V
Unloaded
AC Characteristics
load, 0.8 to 2.0V
load, 2.0 to 0.8V
load, 20% to 80%
load, 80% to 20%
load @ 1.4V
load
load
load @ 1.4V (-22
MIN
-
2.0
-16.0
-2.0
-
2.4
22.0
-
-
-
-
-
-
-
42.0
-
-200.0
-100.0
11.0
2.0
-
-
-
TYP
-
-
-6.0
-
0.15
3.25
35.0
-50.0
22.0
380.0
0.8
0.7
1.5
1.0
49.0
30.0
MAX
0.8
-
-
2.0
0.40
-
-
-35.0
45.0
700.0
1.4
1.2
2.0
1.5
55.0
60.0
200.0
100.0
19.0
120.0
18.0
13.0
-
UNITS
V
V
µA
µA
V
V
mA
mA
mA
k ohms
ns
ns
ns
ns
%
ps
ps
ps
MH z
MHz
ms
ms
pF
15pF
15pF
15pF
15pF
15pF
15pF
15pF
15pF
only)
-20.0
17.0
106.25
7.58
6.0
5.0
8 to 66.6 MHz
X1 (Pin 3)
X2 (Pin 4)
Note 1:
Parameter is guaranteed by design and characterization. Not 100% tested in production.
3
ICS9107C-21
ICS9107C-22
Preliminary Product Preview
8-Pin Plastic SOIC Package
Ordering Information
ICS9107C-21CS08 or ICS9107C-22CS08
Example:
XXX XXX PPP S X#W
Lead Count & Package Width
Package Type
S=SOIC
Lead Count=1, 2 or 3 digits
W=.3 SOIC or .6 DIP; None=Standard Width
Pattern Number (2 or 3 digit number for parts with ROM code patterns)
Device Type (consists of 3 or 4 digit numbers)
Prefix
ICS, AV=Standard Device
4
PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change
without notice.
