ics552-01a STMicroelectronics, ics552-01a Datasheet - Page 3

• Manufacturer Part Number: ics552-01a
• Description: Low Skew, Single-input To Eight- Output Clock Buffer
• Manufacturer: STMicroelectronics

MDS 552-01 AB
Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 • [phone]tel • www.icst.com
Electrical Specifications
External Components
A minimum number of external components are required for proper operation. A decoupling capacitor of
0.01 uF should be connected between VDD and GND on pins 4 and 6, and 16 and 14. Other VDDs and
GNDs can be connected to these pins or directly to their respective power planes. A 33
resistor may be used on the clock output if the trace is longer than 1-inch.
The crystal should be a fundamental mode (do not use third overtone), parallel resonant, with accuracy as
required by the application. Crystal capacitors should be connected from pins X1 to ground and X2 to
ground. The value of these capacitors is given by the following equation, where C
capacitance: Crystal caps (pF) = (C
should be used. For a clock input, connect it to X1/ICLK, and leave X2 unconnected (floating).
Note:
Parameter
ABSOLUTE MAXIMUM RATINGS (note 1)
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply voltage, VDD
Inputs and Clock Outputs
Ambient Operating Temperature
Soldering Temperature
Storage temperature
DC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted)
DC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted)
DC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted)
Operating Voltage, VDD
Input High Voltage, VIH
Input Low Voltage, VIL
Input High Voltage, VIH
Input Low Voltage, VIL
Output High Voltage, VOH
Output Low Voltage, VOL
Output High Voltage, VOH, VDD = 3.3 or 5 V
Operating Supply Current, IDD, at 3.3 V
Operating Supply Current, IDD, at 5 V
Power Down Supply Current, IDD, at 3.3 V
Short Circuit Current, VDD = 3.3 V
AC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted)
AC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted)
AC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted)
Input Crystal or Clock Frequency
Output Clock Rise Time
Output Clock Fall Time
Output Clock Duty Cycle
Output to Output Skew
1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged
exposure to levels above the operating limits but below the Absolute Maximums may affect device reliability.
Crystal Oscillator & Multiplier with 8 Low Skew Outputs
L
-12) x 2. So for a crystal with 18pF load capacitance, two 12pF caps
Conditions
Referenced to GND
Referenced to GND
Commercial
Industrial
Max of 10 seconds
ICLK
ICLK
S3:S0
S3:S0
VDD=3.3V, IOH=-8mA
VDD=3.3V, IOL=8mA
IOH=-8mA
No Load, 25 MHz in, x4
No Load, 25 MHz in, x4
S3:S0 = 0 (Gnd)
Each output
0.8 to 2.0 V
2.0 to 0.8 V
At VDD/2
Rising edges at VDD/2
3
(VDD/2)+1
Minimum
VDD-0.4
Revision 032200
-0.5
-40
-65
3.0
2.4
10
40
0
2
Typical
VDD/2
VDD/2
±50
35
59
55
50
L
is the crystal load
(VDD/2)-1
Maximum
VDD+0.5
ICS552-01A
series terminating
260
150
250
5.5
0.8
0.4
1.5
1.5
70
85
27
60
7
Printed 11/14/00
Units
MHz
mA
mA
mA
°C
°C
°C
°C
µA
%
V
V
V
V
V
V
V
V
V
V
ns
ns
ps