Low Skew, 1-to-2 Differential-to-LVDS
Fanout Buffer
85411
Data Sheet
©2016 Integrated Device Technology, Inc Revision C January 20, 20161
GENERAL DESCRIPTION
The 85411 is a low skew, high performance 1-to-2 Differential-
to-LVDS Fanout Buffer and a member of the family of High
Performance Clock Solutions from IDT. The CLK, nCLK pair
can accept most standard differential input levels.The 85411 is
characterized to operate from a 3.3V power supply. Guaranteed
output and part-to-part skew characteristics make the 85411 ideal
for those clock distribution applications demanding well defi ned
performance and repeatability.
FEATURES
Two differential LVDS outputs
One differential CLK, nCLK clock input
CLK, nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
Maximum output frequency: 650MHz
Translates any single ended input signal to
LVDS levels with resistor bias on nCLK input
Output skew: 20ps (maximum)
Part-to-part skew: 250ps (maximum)
Additive phase jitter, RMS: 0.05ps (typical)
Propagation delay: 2.5 ns (maximum)
3.3V operating supply
0°C to 70°C ambient operating temperature
Available in lead free (RoHS 6) package
BLOCK DIAGRAM PIN ASSIGNMENT
85411
8-Lead SOIC
3.90mm x 4.90mm x 1.37mm package body
M Package
Top View
Q0
nQ0
Q1
nQ1
1
2
3
4
VDD
CLK
nCLK
GND
8
7
6
5
Q0
nQ0
Q1
nQ1
CLK
nCLK
Pulldown
Pullup
85411 Data Sheet
©2016 Integrated Device Technology, Inc Revision C January 20, 20162
TABLE 1. PIN DESCRIPTIONS
TABLE 2. PIN CHARACTERISTICS
Number Name Type Description
1, 2 Q0, nQ0 Output Differential output pair. LVDS interface levels.
3, 4 Q1, nQ1 Output Differential output pair. LVDS interface levels.
5 GND Power Power supply ground.
6 nCLK Input Pulldown Inverting differential clock input.
7 CLK Input Pullup Non-inverting differential clock input.
8V
DD
Power Positive supply pin.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Symbol Parameter Test Conditions Minimum Typical Maximum Units
C
IN
Input Capacitance 4 pF
R
PULLUP
Input Pullup Resistor 51
kΩ
R
PULLDOWN
Input Pulldown Resistor 51
kΩ
85411 Data Sheet
©2016 Integrated Device Technology, Inc Revision C January 20, 20163
TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, V
DD
= 3.3V±10%, TA = 0°C TO 70°C
TABLE 3B. DIFFERENTIAL DC CHARACTERISTICS, V
DD
= 3.3V±10%, TA = 0°C TO 70°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
DD
Positive Supply Voltage 2.97 3.3 3.63 V
I
DD
Power Supply Current 50 mA
NOTE: Stresses beyond those listed under Absolute
Maximum Ratings may cause permanent damage to the
device. These ratings are stress specifi cations only. Functional
operation of product at these conditions or any conditions beyond
those listed in the DC Characteristics or AC Characteristics is not
implied. Exposure to absolute maximum rating conditions for ex-
tended periods may affect product reliability.
TABLE 3C. LVDS DC CHARACTERISTICS, V
DD
= 3.3V±10%, TA = 0°C TO 70°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
OD
Differential Output Voltage 247 325 454 mV
Δ V
OD
VOD Magnitude Change 0 50 mV
V
OS
Offset Voltage 1.325 1.45 1.575 V
Δ V
OS
VOS Magnitude Change 5 50 mV
I
OFF
Power Off Leakage -20 ±1 +20 µA
I
OSD
Differential Output Short Circuit Current -3.5 -5 mA
I
OS
Output Short Circuit Current -3.5 -5 mA
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
DD
4.6V
Inputs, V
I
-0.5V to V
DD
+ 0.5V
Outputs, I
O
Continuous Current 10mA
Surge Current 15mA
Package Thermal Impedance, θ
JA
112.7°C/W (0 lfpm)
Storage Temperature, T
STG
-65°C to 150°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
I
IH
Input High Current
CLK V
DD
= V
IN
= 3.63V 5 µA
nCLK V
DD
= V
IN
= 3.63V 150 µA
I
IL
Input Low Current
CLK V
DD
= 3.63, V
IN
= 0V -150 µA
nCLK V
DD
= 3.63V, V
IN
= 0V -5 µA
V
PP
Peak-to-Peak Input Voltage; NOTE 1 0.15 1.3 V
V
CMR
Common Mode Input Voltage; NOTE 1, 2 0.5 V
DD
- 0.85 V
NOTE 1: V
IL
should not be less than -0.3V.
NOTE 2: Common mode voltage is defi ned as V
IH
.

85411AMLFT

Mfr. #:
Manufacturer:
IDT
Description:
Clock Buffer Low Skew 1-to-2 Diff to LVDS Fanout Buff
Lifecycle:
New from this manufacturer.
Delivery:
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