ICS854S204I Datasheet, PDF (1/19 Pages) Integrated Device Technology – LOW SKEW, DUAL, PROGRAMMABLE 1-TO-2 DIFFERENTIALTO-LVDS, LVPECL FANOUT BUFFER

LOW SKEW, DUAL, PROGRAMMABLE 1-TO-2 DIFFERENTIAL-
TO-LVDS, LVPECL FANOUT BUFFER
ICS854S204I
GENERAL DESCRIPTION
The ICS854S204I is a low skew, high performance
ICS
dual, programmable 1-to-2 Differential-to-LVDS,
HiPerClockS™ _{LVPECL Fanout Buffer and a member of t h e}
HiPerClock S™ family of High Performance Clock
Solutions from IDT. The PCLKx, nPCLKx pairs can
accept most standard differential input levels. With the selection of
SEL_OUT signal, outputs can be selected be to either LVDS or
LVPECL levels. The ICS854S204I is characterized to operate
from either a 2.5V or a 3.3V power supply. Guaranteed out-
put and bank skew characteristics make the ICS854S204I
ideal for those clock distribution applications demanding well
defined performance and repeatability.
FEATURES
• Two programmable differential LVDS or LVPECL output banks
• Two differential clock input pairs
• PCLKx, nPCLKx pairs can accept the following differential
input levels: LVDS, LVPECL, SSTL, CML
• Maximum output frequency: 3GHz
• Translates any single ended input signal to LVDS levels
with resistor bias on nPCLKx inputs
• Output skew: 15ps (maximum)
• Bank skew: 15ps (maximum)
• Propagation delay: 500ps (maximum)
• Additive phase jitter, RMS: 0.15ps (typical)
• Full 3.3V or 2.5V power supply
POWER SUPPLY CONFIGURATION TABLE
• -40°C to 85°C ambient operating temperature
3.3V Operation
2.5V Operation
V_DD = 3.3V
V_TAP = nc
V = 2.5V
DD
V_TAP = 2.5V
• Available in lead-free (RoHS 6) package
SEL_OUT FUNCTION TABLE
SEL_OUT
0
1
Output Level
LVDS
LVPECL
BLOCK DIAGRAM
V
TAP
SEL_OUT ^Pulldown
PCLKA ^Pulldown
nPCLKA ^Pullup
PCLKB ^Pulldown
nPCLKB ^Pullup
QA0
nQA0
QA1
nQA1
QB0
nQB0
QB1
nQB1
PIN ASSIGNMENT
PCLKA 1
nPCLKA 2
QA0 3
nQA0 4
QA1 5
nQA1 6
VTAP 7
GND 8
16 nPCLKB
15 PCLKB
14 QB0
13 nQB0
12 QB1
11 nQB1
10 VDD
9 SEL_OUT
ICS854S204I
16-Lead TSSOP
4.4mm x 5.0mm x 0.925mm package body
G Package
Top View
IDT^™ / ICS^™ LVDS, LVPECL FANOUT BUFFER
1
ICS854S204BGI REV. A JUNE 4, 2008