Low Skew, 1-to-2, Differential-to-2.5V, 3.3V
LVPECL/ ECL Fanout Buffer
853S011B
Datasheet
General Description
The 853S011B is a low skew, high performance 1-to-2
Differential-to-2.5V/3.3V LVPECL/ECL Fanout Buffer. The
853S011B is characterized to operate from either a 2.5V or a 3.3V
power supply. Guaranteed output and part-to-part skew
characteristics make the 853S011B ideal for those clock distribution
applications demanding well defined performance and repeatability.
Features
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Two differential 2.5V, 3.3V LVPECL/ECL outputs
One differential PCLK, nPCLK input pair
PCLK, nPCLK pairs can accept the following
differential input levels: LVPECL, LVDS, CML, SSTL
Maximum output frequency: >2.5GHz
Translates any single-ended input signal to 3.3V LVPECL levels
with resistor bias on nPCLK input
Output skew: 5ps (typical)
Part-to-part skew: 130ps (maximum)
Propagation delay: 355ps (maximum)
LVPECL mode operating voltage supply range:
V
CC
= 2.375V to 3.8V, V
EE
= 0V
ECL mode operating voltage supply range:
V
CC
= 0V, V
EE
= -3.8V to -2.375V
-40°C to 85°C ambient operating temperature
Available lead-free (RoHS 6) package
Block Diagram
PCLK
Pulldown
nPCLK
Pullup/Pulldown
Pin Assignment
Q0
nQ0
Q1
nQ1
Q0
nQ0
Q1
nQ1
1
2
3
4
8
7
6
5
V
CC
PCLK
nPCLK
V
EE
853S011B
8-Lead SOIC, 150MIL
3.90mm x 4.90mm x 1.37
mm package body
M Package
Top View
8-Lead TSSOP, 118MIL
3.0mm x 3.0mm x 0.97
mm package body
G Package
Top View
©2016 Integrated Device Technology, Inc.
1
Revision B, February 23, 2016
853S011B Datasheet
Pin Description and Pin Characteristic Tables
Table 1. Pin Descriptions
Number
1, 2
3, 4
5
6
7
8
Name
Q0, nQ0
Q1, nQ1
V
EE
nPCLK
PCLK
V
CC
Output
Output
Power
Input
Input
Power
Pullup/
Pulldown
Pulldown
Type
Description
Differential output pair. LVPECL/ECL interface levels.
Differential output pair. LVPECL/ECL interface levels.
Negative supply pin.
Inverting differential LVPECL clock input. V
CC
/2 default when left floating.
Non-inverting differential LVPECL clock input.
Positive supply pin.
NOTE:
Pullup and Pulldown
refer to internal input resistors. See Table 2,
Pin Characteristics,
for typical values.
Table 2. Pin Characteristics
Symbol
R
PULLDOWN
R
VCC/2
Parameter
Input Pulldown Resistor
RPullup/Pulldown Resistors
Test Conditions
Minimum
Typical
75
50
Maximum
Units
k
k
©2016 Integrated Device Technology, Inc.
2
Revision B, February 23, 2016
853S011B Datasheet
Absolute Maximum Ratings
NOTE: Stresses beyond those listed under
Absolute Maximum Ratings
may cause permanent damage to the device.
These ratings are stress specifications 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
extended periods may affect product reliability.
Item
Supply Voltage, V
CC
Negative Supply Voltage, V
EE
Inputs, V
I
(LVPECL mode)
Inputs, V
I
(ECL mode)
Outputs, I
O
Continuous Current
Surge Current
Operating Temperature Range, T
A
Package Thermal Impedance,
JA
(Junction-to-Ambient) for 8 Lead SOIC
Package Thermal Impedance,
JA
(Junction-to-Ambient) for 8 Lead TSSOP
Storage Temperature, T
STG
Rating
4.6V (LVPECL mode, V
EE
= 0V)
-4.6V (ECL mode, V
CC
= 0V)
-0.5V to V
CC
+ 0.5V
0.5V to V
EE
– 0.5V
50mA
100mA
-40C to +85C
102C/W (0 mps)
145.4C/W (0 mps)
-65C to 150C
DC Electrical Characteristics
Table 3A. Power Supply DC Characteristics, V
CC
= V
CCO
= 2.375V to 3.8V; V
EE
= 0V, T
A
= -40°C to 85°C
Symbol
V
CC
I
EE
Parameter
Positive Supply Voltage
Power Supply Current
Test Conditions
Minimum
2.375
Typical
3.3
Maximum
3.8
25
Units
V
mA
©2016 Integrated Device Technology, Inc.
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Revision B, February 23, 2016
853S011B Datasheet
Table 3B. LVPECL DC Characteristics, V
CC
= 3.3V; V
EE
= 0V, T
A
= -40°C to 85°C
-40°C
Symbol
V
OH
V
OL
V
PP
V
CMR
I
IH
I
IL
Parameter
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
Peak-to-Peak Input Voltage
Input High Voltage Common
Mode Range; NOTE 2
Input
High Current
Input
Low Current
PCLK, nPCLK
PCLK
nPCLK
-10
-200
Min
2.245
1.380
150
1.2
Typ
2.350
1.520
800
Max
2.450
1.660
1200
3.3
200
-10
-200
Min
2.265
1.415
150
1.2
25°C
Typ
2.340
1.510
800
Max
2.415
1.605
1200
3.3
200
-10
-200
Min
2.245
1.405
150
1.2
85°C
Typ
2.320
1.500
800
Max
2.395
1.595
1200
3.3
200
Units
V
V
mV
V
µA
µA
µA
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: Input and output parameters vary 1:1 with V
CC
. V
EE
can vary +0.925V to -0.5V.
NOTE 1: Outputs terminated with 50
to V
CCO
– 2V.
NOTE 2: Common mode voltage is defined as V
IH.
Table 3C. LVPECL DC Characteristics, V
CC
= 2.5V; V
EE
= 0V, T
A
= -40°C to 85°C
-40°C
Symbol
V
OH
V
OL
V
PP
V
CMR
I
IH
I
IL
Parameter
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
Peak-to-Peak Input Voltage
Input High Voltage Common
Mode Range; NOTE 2
Input
High Current
Input
Low Current
PCLK, nPCLK
PCLK
nPCLK
-10
-200
Min
1.445
0.580
150
1.2
Typ
1.550
0.720
800
Max
1.650
0.860
1200
2.5
200
-10
-200
Min
1.405
0.615
150
1.2
25°C
Typ
1.540
0.710
800
Max
1.615
0.805
1200
2.5
200
-10
-200
Min
1.445
0.605
150
1.2
85°C
Typ
1.520
0.700
800
Max
1.595
0.795
1200
2.5
200
Units
V
V
mV
V
µA
µA
µA
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: Input and output parameters vary 1:1 with V
CC
. V
EE
can vary +0.925V to -0.5V.
NOTE 1: Outputs terminated with 50
to V
CCO
– 2V.
NOTE 2: Common mode voltage is defined as V
IH.
©2016 Integrated Device Technology, Inc.
4
Revision B, February 23, 2016
853S011B Datasheet
Table 3D. ECL DC Characteristics, V
CC
= 0V; V
EE
= -3.8V to -2.375V, T
A
= -40°C to 85°C
-40°C
Symbol
V
OH
V
OL
V
PP
V
CMR
I
IH
I
IL
Parameter
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
Peak-to-Peak Input Voltage
Input High Voltage Common
Mode Range; NOTE 2
Input
PCLK, nPCLK
High Current
Input
Low Current
PCLK
nPCLK
-10
-200
Min
-1.055
-1.920
150
V
EE
+1.2
Typ
-0.950
-1.780
800
Max
-0.850
-1.640
1200
0
200
-10
-200
Min
-1.035
-1.885
150
V
EE
+1.2
25°C
Typ
-0.960
-1.790
800
Max
-0.885
-1.695
1200
0
200
-10
-200
Min
-1.055
-1.895
150
V
EE
+1.2
85°C
Typ
-0.980
-1.800
800
Max
0.905
-1.705
1200
0
200
Units
V
V
mV
V
µA
µA
µA
NOTE: Input and output parameters vary 1:1 with V
CC
. V
EE
can vary +0.925V to -0.5V.
NOTE 1: Outputs terminated with 50
to V
CCO
– 2V.
NOTE 2: Common mode voltage is defined as V
IH.
©2016 Integrated Device Technology, Inc.
5
Revision B, February 23, 2016
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