ICS85311 Datasheet, PDF (4/13 Pages) Integrated Circuit Systems – Low Skew, 1-to-2 Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer

Integrated
Circuit
Systems, Inc.
ICS85311
Low Skew, 1-to-2
Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer
TABLE 3D. DIFFERENTIAL DC CHARACTERISTICS, V_CC = 2.5V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical
CLK
I_IH
Input High Current
nCLK
V_CC = V_IN = 2.625V
V_CC = V_IN = 2.625V
CLK
I
Input Low Current
IL
nCLK
V_CC = 2.625V, V_IN = 0V
V_CC = 2.625V, V_IN = 0V
-5
-150
V_PP
V_CMR
Peak-to-Peak Input Voltage
Common Mode Input Voltage;
NOTE 1, 2
0.15
V_EE + 0.5
NOTE 1: Common mode voltage is defined as V_IH.
NOTE 2: For single ended applications, the maximum input voltag for CLK, nCLK is V_CC + 0.3V.
Maximum
150
5
1.3
Units
µA
µA
µA
µA
V
V_CC - 0.85
V
TABLE 3E. LVPECL DC CHARACTERISTICS, V_CC = 3.3V±5%, V_CC = 2.5V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions Minimum Typical
V_OH
Output High Voltage; NOTE 1
V_OL
Output Low Voltage; NOTE 1
V_SWING Peak-to-Peak Output Voltage Swing
NOTE 1: Outputs terminated with 50Ω to V_CC - 2V.
V_CC - 1.4
V_CC - 2.0
0.65
Maximum
V_CC - 1.0
V_CC - 1.7
0.9
Units
V
V
V
TABLE 4F. AC CHARACTERISTICS, V_CC = 3.3V±5%, V_CC = 2.5V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum
f_MAX
Maximum Output Frequency
1
t_PD
Propagation Delay; NOTE 1
IJ 1GHz
0.9
1.4
tsk(o) Output Skew; NOTE 2, 4
15
tsk(pp) Part-to-Part Skew; NOTE 3, 4
100
t_R
Output Rise Time
20% to 80% @ 50MHz
300
700
t_F
Output Fall Time
20% to 80% @ 50MHz
300
700
odc
Output Duty Cycle
48
52
All parameters measured at 500MHz unless noted otherwise.
NOTE 1: Measured from the differential input crossing point to the differential output crossing point.
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions.
Measured at the output differential cross points.
NOTE 3: Defined as skew between outputs on different devices operating at the same supply voltages
and with equal load conditions. Using the same type of inputs on each device, the outputs are measured
at the differential cross points.
NOTE 4: This parameter is defined in accordance with JEDEC Standard 65.
Units
GHz
ns
ps
ps
ps
ps
%
ICS85311AM
www.icst.com/products/hiperclocks.html
4
REV. A JUNE 29, 2001