8P34S2104 Datasheet, PDF (1/19 Pages) Integrated Device Technology – Dual 1:4 LVDS Output 1.8V Fanout Buffer

Dual 1:4 LVDS Output 1.8V Fanout Buffer
8P34S2104
Datasheet
Description
The 8P34S2104 is a high-performance, low-power, differential
dual 1:4 LVDS Output 1.8V fanout buffer. The device is designed
for the fanout of high-frequency, very low additive phase-noise
clock and data signals. Two independent buffer channels are
available. Each channel has four low-skew outputs. High isolation
between channels minimizes noise coupling. AC characteristics
such as propagation delay are matched between channels.
Guaranteed output-to-output and part-to-part skew characteristics
make the 8P34S2104 ideal for those clock distribution
applications demanding well-defined performance and
repeatability. The device is characterized to operate from a 1.8V
power supply. The integrated bias voltage references enable easy
interfacing of AC-coupled signals to the device inputs.
Block Diagram
Features
▪ Dual 1:4 low skew, low additive jitter LVDS fanout buffers
▪ Matched AC characteristics across both channels
▪ High isolation between channels
▪ Low power consumption
▪ Both differential CLKA, nCLKA and CLKB, nCLKB inputs
accept LVDS, LVPECL and single-ended LVCMOS levels
▪ Maximum input clock frequency: 2GHz
▪ Output amplitudes: 350mV, 500mV (selectable)
▪ Output bank skew: 8ps typical
▪ Output skew: 10ps typical
▪ Low additive phase jitter, RMS: 45fs typical
(f_REF = 156.25MHz, 12kHz - 20MHz)
▪ Full 1.8V supply voltage mode
▪ Device current consumption (I_DD): 135mA typical
▪ Lead-free (RoHS 6), 28-lead VFQFN packaging
▪ -40°C to 85°C ambient operating temperature
▪ Supports case temperature up to 105°C
CLKA
nCLKA
VDDQA
51k
51k 51k
VREFA
Voltage
Reference A
VDDQB
51k
CLKB
nCLKB
51k 51k
VDDQB
VREFB
SELA
Voltage
51k
Reference B
8P34S2104 transistor count:
QA0
nQA0
QA1
nQA1
QA2
nQA2
QA3
nQA3
QB0
nQB0
QB1
nQB1
QB2
nQB2
QB3
nQB3
©2016 Integrated Device Technology, Inc.
1
October 20, 2016