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PDF ICS9250-22 Data sheet ( Hoja de datos )
| Número de pieza | ICS9250-22 | |
| Descripción | Frequency Generator & Integrated Buffers for Celeron & PII/III | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ICS9250-22 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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Integrated
Circuit
Systems, Inc.
ICS9250-22
Frequency Generator for P IV™
Recommended Application:
P IV Chipset Support
Output Features:
• 4 Differential CPU Clock Pairs @ 3.3V
• 2 - 3V MREF clocks for memory reference seeds,
(separate single ended but 180 degrees out of phase)
• 4 - 66MHz reference output
• 10 - 3V 33MHz PCI clocks
• 2 - 48MHz clocks
• 2 - 14.318 reference output
Features:
• Support power management: Power Down Mode
• Supports Spread Spectrum modulation: 0 to -0.5% down
spread.
• Uses external 14.318MHz crystal
• Select logic for Differential Swing Control, Test mode,
Tristate, Power down, Spread Spectrum, limited
frequency select, selective clock enable.
• External resistor for current reference
• FS pins for frequency select
Key Specifications:
• 3V66 Output jitter <300ps
• CPU Output Jitter <200ps
• MREF Output jitter <250ps
GND
MULTSEL0/REF
MULTSEL1/REF
VDDREF
X1
X2
GNDREF
PCICLK0
PCICLK1
VDDPCI
PCICLK2
PCICLK3
GNDPCI
PCICLK4
PCICLK5
VDDPCI
PCICLK6
PCICLK7
GNDPCI
PCICLK8
PCICLK9
VDDPCI
SEL100/133
GND48
FS0/48MHz
FS1/48MHz
VDD48
PD#
Pin Configuration
1 56 VDDMREF
2 55 3VMREF
3 54 3VMREF_B
4 53 GNDMREF
5 52 SPREAD#
6 51 CPUCLKST3
7 50 CPUCLKSC3
8 49 VDDCPU
9 48 CPUCLKST2
10 47 CPUCLKSC2
11 46 GNDCPU
12 45 CPUCLKST1
13 44 CPUCLKSC1
14 43 VDDCPU
15 42 CPUCLKST0
16 41 CPUCLKSC0
17 40 GNDCPU
18 39 I REF
19 38 VDDA
20 37 GNDA
21 36 VDD3V66
22 35 3V66-3
23 34 3V66-2
24 33 GND3V66
25 32 GND3V66
26 31 3V66-1
27 30 3V66-0
28 29 VDD3V66
56-Pin 300mil SSOP & TSSOP
Functionality
SEL133/
100
FS0
FS1
Function
0 0 0 Active 100MHz
0 0 1 (Reserved)
0 1 0 (Reserved)
0 1 1 Tristate all outputs
1 0 0 Active 133MHz
1 0 1 (Reserved)
1 1 0 (Reserved)
1 1 1 Test Mode
Power Groups
VDDREF, GNDREF= REF, X1, X2
VDDPCI, GNDPCI = PCICLK
VDD48, GND48 = 48MHz, PLL2
VDD3V66, GND3V66=3V66
VDDCPU, GNDCPU = CPUCLK
VDDMREF, GNDMREF=3VMREF, 3VMREF_B
VDDA=VDD (core supply voltage 3.3V)
GNDA=Ground for core supply
Block Diagram
PLL2
48MHz
2
X1 XTAL
X2 OSC
PLL1
Spread
Spectrum
PD#
SPREAD#
MULTSEL (1:0)
SEL100/133
FS(1:0)
Control
Logic
Config.
Reg.
CPU
DIVDER
3VMREF
DIVDER
PCI
DIVDER
3V66
DIVDER
2 REF
4 CPUCLKST (3:0)
4 CPUCLKSC (3:0)
3VMREF
3VMREF_B
PCICLK (9:0)
10
3V66 (3:0)
4
9250-22 Rev B 12/08/00
Third party brands and names are the property of their respective owners.
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.
1 page  
ICS9250-22
Absolute Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND –0.5 V to VDD +0.5 V
Ambient Operating Temperature . . . . . . . . . . . . . 0°C to +70°C
Case Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 115°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are
stress specifications only and functional operation of the device at these or any other conditions above those listed in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods
may affect product reliability.
Electrical Characteristics - Input/Supply/Common Output Parameters
TA = 0 - 70C; Supply Voltage VDD = 3.3 V +/-5%
PARAMETER SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
Operating Supply
Current
Powerdown Current
Input Frequency
Pin Inductance
Input Capacitance1
Transition time1
Settling time1
Clk Stabilization1
Delay1
VIH
VIL
IIH
IIL1
IIL2
IDD3.3OP
IDD3.3PD
Fi
Lpin
CIN
COUT
CINX
Ttrans
Ts
TSTAB
tPZH,tPZL
tPHZ,tPLZ
VIN = VDD
VIN = 0 V; Inputs with no pull-up resistors
VIN = 0 V; Inputs with pull-up resistors
2
VSS-0.3
-5
-5
-200
CL = 0 pF; Select @ 100 MHz
CL = 0 pF; Input address to VDD or GND
VDD = 3.3 V
Logic Inputs
Output pin capacitance
X1 & X2 pins
To 1st crossing of target frequency
From 1st crossing to 1% target frequency
From VDD = 3.3 V to 1% target frequency
Output enable delay (all outputs)
Output disable delay (all outputs)
27
1
1
VDD+0.3
0.8
5
V
V
µA
µA
130
35
14.318
250
60
7
5
6
45
3
3
3
10
10
mA
mA
MHz
nH
pF
pF
pF
ms
ms
ms
ns
ns
1Guaranteed by design, not 100% tested in production.
Third party brands and names are the property of their respective owners.
5
5 Page 
ICS9250-22
6.10 mm. Body, 0.50 mm. pitch TSSOP
(240 mil)
(0.020 mil)
SYMBOL
A
A1
A2
b
c
D
E
E1
e
L
N
α
aaa
In Millimeters
In Inches
COMMON DIMENSIONS COMMON DIMENSIONS
MIN MAX MIN MAX
- 1.20 - .047
0.05 0.15 .002 .006
0.80 1.05 .032 .041
0.17 0.27 .007 .011
0.09 0.20 .0035 .008
SEE VARIATIONS
SEE VARIATIONS
8.10 BASIC
0.319
6.00 6.20 .236 .244
0.50 BASIC
0.020 BASIC
0.45 0.75 .018
.30
SEE VARIATIONS
SEE VARIATIONS
0° 8° 0° 8°
- 0.10 - .004
VARIATIONS
N
56
D mm.
MIN MAX
13.90
14.10
D (inch)
MIN MAX
.547
MO-153 JEDEC
Doc.# 10-0039
.555
7/6/00 Rev B
Ordering Information
ICS9250yG-22-T
Example:
ICS XXXX y G - PPP - T
Designation for tape and reel packaging
Pattern Number (2 or 3 digit number for parts with ROM code patterns)
Package Type
G=TSSOP
Revision Designator (will not correlate with datasheet revision)
Device Type (consists of 3 or 4 digit numbers)
Prefix
ICS, AV = Standard Device
Third party brands and names are the property of their respective owners.
ICS reserves the right to make changes in the device data identified in
11 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.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ICS9250-22.PDF ] | |
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