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PDF ICS853S013I Data sheet ( Hoja de datos )
| Número de pieza | ICS853S013I | |
| Descripción | LVPECL/ECL Fanout Buffer | |
| Fabricantes | IDT | |
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Low Skew, Dual, 1-to-3, Differential-to-2.5V,
3.3V LVPECL/ECL Fanout Buffer
ICS853S013I
DATASHEET
General Description
The ICS853S013I is a low skew, high performance dual 1-to-3
Differential-to-2.5V, 3.3V LVPECL/ ECL Fanout Buffer. The
ICS853S013I operates with a positive or negative power supply at
2.5V or 3.3V. Guaranteed output and part-to-part skew
characteristics make the ICS853S013I ideal for those clock
distribution applications demanding well defined performance and
repeatability.
Features
• Two differential LVPECL/ECL bank outputs
• Two differential LVPECL clock input pairs
• PCLKx, nPCLKx pairs can accept the following
differential input levels: LVPECL, LVDS, CML, SSTL
• Output frequency: 2GHz (maximum)
• Translates any single-ended input signal to LVPECL levels with
resistor bias on nPCLKx input
• Bank skew: 60ps (maximum)
• Part-to-part skew: 190ps (maximum)
• Propagation delay: 460ps (maximum)
• Additive phase jitter, RMS: 0.05ps (typical)
• LVPECL mode operating voltage supply range:
VCC = 2.375V to 3.8V, VEE = 0V
• ECL mode operating voltage supply range:
VCC = 0V, VEE = -3.8V to -2.375V
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package
Block Diagram
PCLKA Pulldown
nPCLKA Pullup/Pulldown
PCLKB Pulldown
nPCLKB Pullup/Pulldown
QA0
nQA0
QA1
nQA1
QA2
nQA2
QB0
nQB0
QB1
nQB1
QB2
nQB2
Pin Assignment
nQA0
QA0
VCC
PCLKA
nPCLKA
PCLKB
nPCLKB
VCC
nQB0
QB0
1
2
3
4
5
6
7
8
9
10
20 QA1
19 nQA1
18 QA2
17 nQA2
16 VCC
15 QB2
14 nQB2
13 QB1
12 nQB1
11 VEE
ICS853S013I
20-Lead SOIC
7.5mm x 12.8mm x 2.3mm package body
M Package
Top View
ICS853S013AMI REVISION A AUGUST 20, 2010
1
©2010 Integrated Device Technology, Inc.
1 page  
ICS853S013I Data Sheet
LOW SKEW, DUAL, 1-TO-3, DIFFERENTIAL-TO-2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
AC Electrical Characteristics
Table 5. AC Characteristics, VCC = -3.8V to -2.375V or , VCC = 2.375V to 3.8V; VEE = 0V; TA = -40°C to 85°C
-40°C
25°C
85°C
Symbol Parameter
Min Typ Max Min Typ Max Min Typ Max
fMAX
tPLH
Output Frequency
Propagation Delay; Low-to-High;
NOTE 1
230
2
420 250
2
440 270
2
460
tPHL
Propagation Delay; High-to-Low;
NOTE 1
230
420 250
440 270
460
tsk(b) Bank Skew; NOTE 2, 4
60 60 60
tsk(odc) Output Duty Cycle Skew
40 40 40
tsk(pp) Part-to-Part Skew; NOTE 3, 4
190 190 190
Buffer Additive Phase Jitter,
tjit RMS; refer to Additive Phase
0.03
0.05
0.08
Jjitter Section
tR / tF
Output
Rise/Fall Time
20% to 80%
120
250 120
250 120
250
Units
GHz
ps
ps
ps
ps
ps
ps
ps
NOTE: All parameters are measured at f ≤ 1GHz, unless otherwise noted.
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 1: Measured from the differential input crossing point to the differential output crossing point.
NOTE 2: Defined as skew within a bank of outputs at the same voltages and with equal load conditions.
NOTE 3: Defined as skew between outputs on different devices operating at the same supply voltages 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.
ICS853S013AMI REVISION A AUGUST 20, 2010
5
©2010 Integrated Device Technology, Inc.
5 Page 
ICS853S013I Data Sheet
LOW SKEW, DUAL, 1-TO-3, DIFFERENTIAL-TO-2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
Termination for 2.5V LVPECL Outputs
Figure 4A and Figure 4B show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating 50Ω
to VCC – 2V. For VCC = 2.5V, the VCC – 2V is very close to ground
level. The R3 in Figure 4B can be eliminated and the termination is
shown in Figure 4C.
VCC = 2.5V
50Ω
50Ω
2.5V LVPECL Driver
2.5V
R1
250Ω
R3
250Ω
2.5V
+
–
R2
62.5Ω
R4
62.5Ω
VCC = 2.5V
50Ω
50Ω
2.5V LVPECL Driver
2.5V
+
–
R1 R2
50Ω 50Ω
R3
18Ω
Figure 4A. 2.5V LVPECL Driver Termination Example
Figure 4B. 2.5V LVPECL Driver Termination Example
VCC = 2.5V
50Ω
50Ω
2.5V LVPECL Driver
2.5V
+
–
R1 R2
50Ω 50Ω
Figure 4C. 2.5V LVPECL Driver Termination Example
ICS853S013AMI REVISION A AUGUST 20, 2010
11
©2010 Integrated Device Technology, Inc.
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet ICS853S013I.PDF ] | |
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