ICS8543 Data Sheet LOW SKEW, 1-to-4, DIFFERENTIAL-TO-LVDS FANOUT BUFFER
ICS8543BG REVISION E DECEMBER 17, 2010 6 ©2010 Integrated Device Technology, Inc.
AC Electrical Characteristics
Table 5. AC Characteristics, V
DD
= 3.3V ± 5%, T
A
= 0°C to 70°C
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under these conditions.
NOTE: 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 differential output
cross points.
NOTE 3: Defined as skew between outputs on different devices operating at the same supply voltage, same frequency, same temperature 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.
Symbol Parameter Test Conditions Minimum Typical Maximum Units
f
MAX
Maximum Output Frequency 800 MHz
t
PD
Propagation Delay; NOTE 1 ƒ ≤ 800MHz 1.7 2.6 ns
tjit
Buffer Additive Phase Jitter, RMS;
refer to Additive Phase Jitter Section
153.6MHz, Integration Range:
12kHz – 20MHz
0.164 ps
tsk(o) Output Skew; NOTE 2, 4 40 ps
tsk(pp) Part-to-Part Skew; NOTE 3, 4 500 ps
t
R
/ t
F
Output Rise/Fall Time 20% to 80% @ 50MHz 150 350 ps
odc Output Duty Cycle odc 45 50 55 %
