參數(shù)資料
型號(hào)： CY2254ASC-1
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： XO, clock
英文描述： Pentium Processor Compatible Clock Synthesizer/Driver
中文描述： 66.66 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28
封裝： 0.300 INCH, SOIC-28
文件頁數(shù)： 3/8頁
文件大小： 94K
代理商： CY2254ASC-1
CY2254A
Document #: 38-07203 Rev. *A
Page 3 of 8
PCI Clock Driver Strength Requirements
Matched impedances on both rising and falling edges on
the output drivers
Output impedance: 25
(typical) measured at 1.5V
Maximum output impedance: 40
measured at 1.5V
CPU Clock Driver Strength Requirements
Matched impedances on both rising and falling edges on
the output drivers
Output impedance: 25
(typical) measured at 1.5V
Maximum output impedance: 40
measured at 1.5V
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Supply Voltage
........................................................
0.5 to +7.0V
Input Voltage
.................................................
0.5V to V
DD
+ 0.5
Storage Temperature (Non-Condensing)
....
65
°
C to +150
°
C
Junction Temperature............................................... +150
°
C
Package Power Dissipation.............................................. 1W
Static Discharge Voltage............................................>2000V
(per MIL-STD-883, Method 3015)
Operating Conditions
[3]
Parameter
V
DD
Description
Min.
3.135
4.5
0
Max.
3.6
5.5
70
Unit
V
V
°
C
pF
Supply Voltage 3.3V
Supply Voltage 5.0V
Operating Ambient Temperature
Max. Capacitive Load on
CPUCLK
PCICLK
IOCLK
KBDCLK / USBCLK
REF0
REF1
Reference Frequency, Oscillator Nominal Value
Power-up time for all VDD's to reach minimum specified voltage (power
ramps must be monotonic)
T
A
C
L
20
30
20
20
30
15
f
(REF)
14.318
14.318
MHz
t
PU
0.05
50
ms
Electrical Characteristics
V
DD
= 3.135V
3.6V, or 5.0V
±
10%, T
A
= 0
°
C to +70
°
C
Parameter
Description
V
IH
High-level Input Voltage
Except Crystal Inputs
V
IL
Low-level Input Voltage
Except Crystal Inputs
V
OH[4]
High-level Output Voltage
V
DD
= V
DD
Min.
Test Conditions
Min.
2.0
Max.
Unit
V
V
V
0.8
I
OH
= 6 mA
I
OH
= 12 mA
I
OH
= 4 mA
I
OH
= 8 mA
I
OL
= 6 mA
I
OL
= 12 mA
I
OL
= 4 mA
I
OL
= 8 mA
CPUCLK
PCICLK, REF0
KBDCLK, USBCLK
REF1
CPUCLK
PCICLK, REF0
KBDCLK, USBCLK
REF1
2.4
V
OL[4]
Low-level Output Voltage
V
DD
= V
DD
Min.
0.4
V
I
IH
Input High Current
V
IH
= V
DD,
V
DD
= 3.3V
V
IH
= V
DD,
V
DD
= 5.0V
V
IL
= 0 V, V
DD
= 3.3V
V
IL
= 0 V, V
DD
= 5.0V
Three-state
V
DD
= 3.6V, V
IN
= 0 or V
DD
V
DD
= 5.5V, V
IN
= 0 or V
DD
5
μ
A
μ
A
μ
A
μ
A
μ
A
mA
mA
10
100
250
+10
90
150
I
IL
Input Low Current
I
OZ
I
DD
Output Leakage Current
Power Supply Current
10
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CY2254ASC-1T 制造商:Cypress Semiconductor 功能描述:Pentium Processor Compatible 28-Pin SOIC T/R 制造商:Rochester Electronics LLC 功能描述:PENTIUM COMPATIBLE CLOCK GENERATOR/DRIVER - Tape and Reel
CY2254ASC-2 制造商:Cypress Semiconductor 功能描述:Pentium Processor Compatible 28-Pin SOIC
CY2255 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator
CY225670SNC 制造商:Cypress Semiconductor 功能描述:
CY2256PVC-1 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator
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