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PDF ICS9169A-70 Data sheet ( Hoja de datos )

Número de pieza ICS9169A-70
Descripción Frequency Generator for Workstation Systems
Fabricantes Integrated Circuit Systems 
Logotipo Integrated Circuit Systems Logotipo



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Integrated
Circuit
Systems, Inc.
ICS9169A-70
Frequency Generator for Workstation Systems
General Description
The ICS9169A-70 is a low-cost frequency generator designed
specifically for workstation or PC system clocks. The
integrated buffer minimizes skew and provides all the clocks
required. A 14.318 MHz XTAL oscillator provides the
reference clock to generate standard Pentium frequencies.
The CPU clock makes gradual frequency transitions without
violating the PLL timing of internal microprocessor clock
multipliers.
Features
• 9 PCI outputs selectable from 30 to 66.6MHz
• 3 SCSI outputs, selectable from 10 to 80MHz
• 500ps skew window for all synchronous clock edges
• Integrated buffer outputs drive up to 30pF loads
• 500ps output to output skew window
• Buffers drive 30pF loads nominally 0.8V/ns skew rate
• 3.0V - 3.7Vsupply range
• 32-pin SOIC package
• 48 MHz clock for USB support and 24 MHz clock
for FD
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Pin Configuration
DataShee
Block Diagram
32-Pin SOIC
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9169A-70 Rev B 2/14/01
ICS reserves the right to make changes in the device data identified in this
publication without further notice. ICS advises its customers to obtain the latest
version of all device data to verify that any information being relied upon by the
customer is current and accurate.

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ICS9169A-70 pdf
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ICS9169A-70
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Electrical Characteristics - SCSI
TA = 0 - 70C; VDD = VDDL = 3.3 V +/-10%; CL = 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Output High Voltage
VOH1 IOH = -14 mA
Output Low Voltage
VOL1 IOL = 11 mA
Output High Current
IOH1 VOH = 2.0 V
Output Low Current
Rise Time
Fall Time
Duty Cycle
Skew (window)
Jitter
IOL1
tr51
tf51
dt51
tsk
1
1
tj1s
1
5
tj1s
1
5
tjabs51
tjabs51
VOL = 0.8 V
VOL = 0.8 V, VOH = 2.4 V
VOH = 2.4 V, VOL = 0.8 V
VT = 1.5 V
VT = 1.4 V
VT = 1.5 V; Rs= 33; (10 to 24 MHz Clocks)
VT = 1.5 V; Rs= 33; (40 to 80 MHz Clocks)
VT = 1.5 V; Rs= 33; (10 to 24 MHz Clocks)
VT = 1.5 V; Rs= 33; (40 to 80 MHz Clocks)
1Guarenteed by design, not 100% tested in production.
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Electrical Characteristics - PCI
TA = 0 - 70C; VDD = 3.3 V +/-10%; CL = 30 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Output High Voltage
VOH1 IOH = -14 mA
Output Low Voltage
VOL1 IOL = 11 mA
Output High Current
IOH1
VOH = 2.0 V
Output Low Current
Rise Time
Fall Time
Duty Cycle
Skew (window)
Jitter
IOL1
tr11
tf11
dt11
tsk11
tj
1s
1
1
tjabs11
VOL = 0.8 V
VOL = 0.8 V, VOH = 2.4 V
VOH = 2.4 V, VOL = 0.8 V
VT = 1.4 V
VT = 1.4 V
VT = 1.5 V; Rs= 33
VT = 1.5 V; Rs= 33
1Guarenteed by design, not 100% tested in production.
MIN
2.4
20.0
TYP
2.9
0.3
-43.0
31.0
MAX UNITS
V
0.4 V
23.0 mA
mA
0.7 1.5 nS
0.6 1.5 nS
45 50 55 %
-250 - 250 pS
- 200 300 pS
- 90 150 pS
-700 - 700
-400 - 400 pS
MIN
2.4
20.0
45.0
-250
-300
TYP
2.9
0.3
-43.0
31.0
0.8
0.9
51.0
88
MAX UNITS
V
0.4 V
23.0 mA
mA
1.5 nS
1.5 nS
55.0 %
250 pS
150 pS
300 pS
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