ICS8521I Datasheet, PDF (5/14 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-9 DIFFERENTIAL-TO-HSTL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS8521I
LOW SKEW, 1-TO-9
DIFFERENTIAL-TO-HSTL FANOUT BUFFER
TABLE 4D. LVPECL DC CHARACTERISTICS, V_DD = 3.3V±5%, V_DDO = 1.8V±0.2V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical
PCLK
I_IH
Input High Current
nPCLK
V_DD = V_IN = 3.465V
V_DD = V_IN = 3.465V
I_IL
PCLK
Input Low Current
nPCLK
V_DD = 3.465V, V_IN = 0V
V_DD = 3.465V, V_IN = 0V
-5
-150
V_PP
Peak-to-Peak Input Voltage
0.3
V_CMR
Common Mode Input Voltage;
NOTE 1, 2
1.5
NOTE 1: Common mode voltage is defined as V_IH.
NOTE 2: For single ended applications, the maximum input voltage for PCLK and nPCLK is V_DD + 0.3V.
Maximum
150
5
1
V_DD
Units
µA
µA
µA
µA
V
V
TABLE 4E. HSTL DC CHARACTERISTICS, V_DD = 3.3V±5%, V_DDO = 1.8V±0.2V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
V_OH
Output High Voltage;
NOTE 1
V
OL
Output Low Voltage;
NOTE 1
V_OX
V_SWING
Output Crossover Voltage
Peak-to-Peak
Output Voltage Swing
NOTE 1: Outputs terminated with 50Ω to ground.
Minimum
1.0
0
40% x (V_OH - V_OL) + V_OL
0.6
Typical
Maximum
1.4
0.4
60% x (V_OH - V_OL) + V_OL
1.1
Units
V
V
V
V
TABLE 5. AC CHARACTERISTICS, V_DD = 3.3V±5%, V_DDO = 1.8V±0.2V, TA = -40°C TO 85°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum
f_MAX
t_PD
tsk(o)
Output Frequency
Propagation Delay; NOTE 1
Output Skew; NOTE 2, 4
IJ 250MHz
500
1.3
25
tsk(pp) Part-to-Part Skew; NOTE 3, 4
200
t_R / t_F
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80% @ 50MHz
300
700
50
All parameters measured at 250MHz unless noted otherwise.
NOTE 1: Measured from the differential input crossing point to the differential output crossing point.
Measured from V_DD/2 to the output differential crossing point for single ended input levels.
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
MHz
ns
ps
ps
ps
%
8521BYI
www.icst.com/products/hiperclocks.html
5
REV. A NOVEMBER 17, 2005