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PDF ICS873034 Data sheet ( Hoja de datos )
| Número de pieza | ICS873034 | |
| Descripción | 3.3V LVPECL/ECL CLOCK GENERATOR | |
| Fabricantes | Integrated Circuit System | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS873034
LOW SKEW, ÷2, ÷4, ÷8 D - -IFFEwRwEwN.DTaIAtaLShTeOet4U.com
2.5V, 3.3V LVPECL/ECL CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS873034 is a low skew, high perfor-
ICS mance Differential-to-2.5V, 3.3V LVPECL/ECL
HiPerClockS™ Clock Generator a n d a m e m b e r o f t h e
HiPerClockS ™ family of High Performance
Clock Solutions from ICS. The ICS873034
is characterized to operate from either a 2.5V or a 3.3V
power supply. Guaranteed output and par t-to-par t skew
characteristics make the ICS873034 ideal for those
clock distribution applications demanding well defined
perfor mance and repeatability.
FEATURES
• 3 differential 2.5V, 3.3V LVPECL / ECL output
• 1 differential PCLK, nPCLK input pair
• PCLK, nPCLK pair can accept the following
differential input levels: LVPECL, LVDS, CML, SSTL
• Input frequency: 3.5GHz
• Translates any single ended input signal to 3.3V
LVPECL levels with resistor bias on nPCLK input
• LVPECL mode operating voltage supply range:
V = 2.375V to 3.8V, V = 0V
CC EE
• ECL mode operating voltage supply range:
V = 0V, V = -3.8V to -2.375V
CC EE
• -40°C to 85°C ambient operating temperature
• Pin compatible with MC100LVEP34
BLOCK DIAGRAM
nEN
PCLK
nPCLK
D
Q
LE
V
BB
MR
PIN ASSIGNMENT
÷2 Q0
nQ0
R
÷4 Q1
R nQ1
÷8 Q2
R nQ2
Q0
nQ0
VCC
Q1
nQ1
VCC
Q2
nQ2
1
2
3
4
5
6
7
8
16 VCC
15 nEN
14 nc
13 PCLK
12 nPCLK
1 1 VBB
10 MR
9 VEE
ICS873034
16-Lead SOIC, 300MIL
7.5mm x 10.3mm x 2.3mm package body
M Package
Top View
ICS873034
16-Lead TSSOP
4.4mm x 3.0mm x 0.92mm package body
G Package
Top View
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
873034AM
www.icst.com/products/hiperclocks.html
REV. A AUGUST 30, 2004
1
1 page  
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS873034
LOW SKEW, ÷2, ÷4, ÷8 D - -IFFEwRwEwN.DTaIAtaLShTeOet4U.com
2.5V, 3.3V LVPECL/ECL CLOCK GENERATOR
TABLE 5. AC CHARACTERISTICS, VCC = 0V; VEE = -3.8V TO -2.375V OR VCC = 2.375V TO 3.8V; VEE = 0V
Symbol Parameter
-40°C
25°C
Min Typ Max Min Typ Max Min
fMAX Input Frequency
t Propagation Delay; NOTE 1
PD
3.5
530
3.5
560
tRR Set/Reset Recovery
320 320
tS Setup Time
nEN
50
50
tH Hold Time
nEN
100
100
tR/tF Output Rise/Fall Time 20% to 80%
170
180
odc Output Duty Cycle
50 50
All parameters are measured at f ≤ 1GHz, unless otherwise noted.
NOTE 1: Measured from the differential input crossing point to the differential output crossing point.
85°C
Typ
3.5
Max
610
320
50
100
200
50
Units
GHz
ps
ps
ps
ps
ps
%
873034AM
www.icst.com/products/hiperclocks.html
5
REV. A AUGUST 30, 2004
5 Page 
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS873034
LOW SKEW, ÷2, ÷4, ÷8 D - -IFFEwRwEwN.DTaIAtaLShTeOet4U.com
2.5V, 3.3V LVPECL/ECL CLOCK GENERATOR
APPLICATION SCHEMATIC EXAMPLE
Figure 1 shows an example of ICS873034 application schematic.
In this example, the device is operated at V =3.3V. The
CC
decoupling capacitor should be located as close as possible
to the power pin. The input is driven by a 3.3V LVPECL driver.
For the LVPECL output drivers, only two terminations examples
are shown in this schematic. More termination approaches are
shown in the LVPECL Termination Application Note.
3.3V
Zo = 50 Ohm
Zo = 50 Ohm
LVPECL
3.3V
R9 R8
50 50
U1
9
10
VEE
11
12
13
14
MR
VBB
nCLK
CLK
15
16
nc
nEN
VC C
ICS873034
R10
50
nQ2
Q2
VCC
nQ1
Q1
VCC
nQ0
Q0
8
7
6
5
4
3
2
1
(U1-3)
(U1-6) (U1-16)
3.3V
C1
0.1uF
C2
0.1uF
C3
0.1uF
3.3V
Zo = 50 Ohm
R1
133
Zo = 50 Ohm
R2
82.5
R3
133
+
-
R4
82.5
Zo = 50 Ohm
Zo = 50 Ohm
R5
50
+
-
R6
50
Optional
Y-Termination
R7
50
FIGURE 6. ICS873034 APPLICATION SCHEMATIC EXAMPLE
873034AM
www.icst.com/products/hiperclocks.html
11
REV. A AUGUST 30, 2004
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet ICS873034.PDF ] | |
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