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PDF ICS87354I Data sheet ( Hoja de datos )
| Número de pieza | ICS87354I | |
| Descripción | CLOCK GENERATOR | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS87354I
÷4/÷5 DIFFERENTIAL-TO-2.5V/3.3V
LVPECL CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS87354I is a high performance ÷4/÷5 Dif-
,&6 ferential-to-2.5V/3.3V ECL/LVPECL Clock Genera-
HiPerClockS™ tor and a member of the HiPerClockS™ family of
High Performance Clock Solutions from ICS. The
CLK, nCLK pair can accept most standard differ-
ential input levels. The ICS87354I 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 ICS87354I ideal
for those clock distribution applications demanding well defined
performance and repeatability.
FEATURES
• 1 differential 2.5V/3.3V LVPECL / ECL output
• 1 CLK, nCLK input pair
• CLK, nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
• Maximum output frequency: 250MHz
• Input frequency: >1GHz
• Translates any single ended input signal to
3.3V LVPECL levels with resistor bias on nCLK input
• Output skew: 38ps (maximum)
• Part-to-part skew: 375ps (maximum)
• Propagation delay: 2.1ns (maximum)
• LVPECL mode operating voltage supply range:
VCC = 2.375V to 3.8V, VEE = 0V
• ECL mode operating voltage supply range:
VCC = 0V, VEE = -2.375V to -3.8V
• -40°C to 85°C ambient operating temperature
BLOCK DIAGRAM
CLK
nCLK
MR
÷4 0
÷5 1
R
F_SEL
Q
nQ
PIN ASSIGNMENT
CLK
nCLK
MR
F_SEL
1
2
3
4
8 Vcc
7Q
6 nQ
5 VEE
ICS87354I
8-Lead SOIC
3.90mm x 4.90mm x 1.37mm package body
M 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.
87354AMI
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2003
1
1 page  
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS87354I
÷4/÷5 DIFFERENTIAL-TO-2.5V/3.3V
LVPECL CLOCK GENERATOR
PARAMETER MEASUREMENT INFORMATION
VCC = 2V
LVPECL
V = -1.8V ± -0.375V
EE
SCOPE
Qx
nQx
VCC
nCLK
CLK
V
PP
VEE
Cross Points
3.3V OUTPUT LOAD AC TEST CIRCUIT
DIFFERENTIAL INPUT LEVEL
V
CMR
PART 1
nQx
Qx
PART 2
nQy
Qy
t sk(pp)
PART-TO-PART SKEW
nQx
Qx
nQy
Qy
t sk(o)
OUTPUT SKEW
Clock
20%
Outputs
80%
tR
OUTPUT RISE/FALL TIME
87354AMI
80%
tF
VSW I N G
20%
nCLK
CLK
nQ
Q
tPD
PROPAGATION DELAY
www.icst.com/products/hiperclocks.html
5
REV. A JUNE 27, 2003
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet ICS87354I.PDF ] | |
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