PRELIMINARY INFORMATION
ICS551
1 to 4 Clock Buffer
Electrical Specifications
Parameter
Supply voltage, VDD
Inputs and Clock Outputs
Ambient Operating Temperature
Soldering Temperature
Storage temperature
Conditions
Referenced to GND
Referenced to GND
Max of 20 seconds
-65
3
VDD/2 + 1
2
0.8
IOH=-25mA
IOL=25mA
IOH=-8mA
No load, 135 MHz
Each output
All inputs
2.4
0.4
VDD-0.4
18
±50
200
0
15 pF load. Note 3.
15 pF load. Note 3.
0.8 to 2.0V
2.0 to 0.8V
At 3.3 V
At 5.0 V
Rising edges at VDD/2
160
160
135
1.5
1.5
8
6
250
Minimum
Typical
Maximum
7
VDD+0.5
70
260
150
5.5
VDD/2
VDD/2
VDD/2 - 1
Units
V
V
°C
°C
°C
V
V
V
V
V
V
V
V
mA
mA
kΩ
MHz
MHz
MHz
ns
ns
ns
ns
ps
ABSOLUTE MAXIMUM RATINGS (note 1)
-0.5
0
DC CHARACTERISTICS
Operating Voltage, VDD
Input High Voltage, VIH, IN
Input Low Voltage, VIL, In
Input High Voltage, VIH, OE
Input Low Voltage, VIL, OE
Output High Voltage, VOH, 5V
Output Low Voltage, VOL, 5V
Output High Voltage, VOH, CMOS level
Operating Supply Current, IDD, 3.3V
Short Circuit Current, 3.3 V
Internal pull-up resistor
Clock input
Clock input
AC CHARACTERISTICS
Input Frequency
Output Frequency, 3.3 V
Output Frequency, 5 V
Output Clock Rise Time
Output Clock Fall Time
Propagation Delay
Output to output skew
Notes:
2
1.5
4
3
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.
2. Duty cycle on outputs will match incoming clock duty cycle. Consult ICS for tight duty cycle clock generators.
3. With external series resistor of 33
Ω
positioned close to each output pin.
3
Revision 091200
Printed 11/14/00
Integrated Circuit Systems, Inc.•525 Race Street•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax
MDS 551 B
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
