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參數(shù)資料
| 型號： | CDC922DLR |
| 英文描述： | CPU System Clock Generator |
| 中文描述： | CPU系統(tǒng)時鐘發(fā)生器 |
| 文件頁數(shù)： | 6/17頁 |
| 文件大小： | 292K |
| 代理商： | CDC922DLR |
CDC922
133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS
WITH 3-STATE OUTPUTS
SCAS634 –JULY 28, 1999
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
DD
Input voltage range, V
I
(see Note 1)
Voltage range applied to any output in the high-impedance state or power-off state,
V
O
(see Note 1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state, I
O
Input clamp current, I
IK
(V
I
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
–0.5 V to 4.6 V
–0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–0.5 V to V
DD
+ 0.5 V
2
×
I
OL
–18 mA
–50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–0
°
C to 85
°
C
–65
°
C to 150
°
C
260
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
DISSIPATION RATING TABLE
DERATING FACTOR
ABOVE TA = 25
°
C
10.53 mW/
°
C
PACKAGE
TA
≤
25
°
C
POWER RATNG
TA = 70
°
C
POWER RATING
TA = 85
°
C
POWER RATING
DL
1315.7 mW
842.1 mW
684.2 mW
This is the inverse of the traditional junction-to-case thermal resistance (R
θ
JA) and uses a board-mounted device
at 95
°
C/W.
recommended operating conditions (see Note 2)
MIN
3.135
NOM
MAX
3.465
UNIT
Supply voltage VDD
Supply voltage, VDD
3.3 V
V
2.5 V
2.375
2.625
High-level input voltage, VIH
2
VDD +
0.3 V
V
Low-level input voltage, VIL
GND –
0.3 V
0.8
V
Input voltage, VI
0
VDD
–12
V
CPUx, CPU_DIV2
High level output current IOH
High-level output current, IOH
APIC
–12
mA
48MHz, REFx
–14
PCIx, PCI_F, 3V66x
–18
CPUx, CPU_DIV2
12
Low level output current IOL
Low-level output current, IOL
APIC
12
mA
48MHz, REFx
9
PCIx, PCI_F, 3V66x
12
Reference frequency, f(XTAL)
Crystal frequency, f(XTAL)§
Operating free-air temperature, TA
NOTE 2: Unused inputs must be held high or low to prevent them from floating.
All nominal values are measured at their respective nominal VDD values.
Reference frequency is a test clock driven on the XIN input during the device test mode and normal mode. In test mode, XIN can be driven
externally up to f(XTAL) = 130 MHz. If XIN is driven externally, XOUT is floating.
§This is a series fundamental crystal with fO = 14.31818 MHz.
Test mode
130
MHz
Normal mode
13.8
14.318
14.8
MHz
°
C
0
85
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