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參數(shù)資料
| 型號(hào)： | CY28378 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | FTG for Pentium 4 and Intel 845 Series Chipset |
| 中文描述： | 為奔騰4和Intel 845系列芯片組FTG |
| 文件頁數(shù)： | 15/22頁 |
| 文件大小： | 174K |
| 代理商： | CY28378 |
CY28378
Document #: 38-07519 Rev. **
Page 15 of 22
I
DD3
I
DDPD3
3.3V Power Supply Current
3.3V Shutdown Current
V
DD_CORE
/V
DD33
= 3.465V, F
CPU
= 133 MHz
V
DD_CORE
/V
DDQ3
= 3.465V
250
25
mA
mA
AC Electrical Specifications
[2]
Parameter
t
1
t
2
t
2
t
2
t
3
t
3
t
3
t
4
t
5
t
6
t
7
t
8
Output
Description
Test Conditions
Min.
45
175
0.5
1.0
175
0.5
0.7
Max.
55
800
2.0
4.0
800
2.0
4.0
150
500
500
4.5
600
Unit
%
ps
V/ns
V/ns
ps
V/ns
V/ns
ps
ps
ps
ns
ps
All
CPUT/C
48MHz, REF
PCI, 3V66,
CPUT/C
48MHz, REF
PCI, 3V66
CPUT/C
3V66 [0:1]
PCI
3V66,PCI
CPUT/C
Output Duty Cycle
[3]
Rise Time
Rising Edge Rate
Rising Edge Rate
Fall Time
Falling Edge Rate
Falling Edge Rate
CPU-CPU Skew
3V66-3V66 Skew
PCI-PCI Skew
3V66-PCI Clock Skew
Cycle-Cycle Clock Jitter
t
1A
/(t
1B
)
Measured at 20% to 80% of V
oh
Between 0.4V and 2.4V
Between 0.4V and 2.4V
Measured at 80% to 20% of V
oh
Between 2.4V and 0.4V
Between 2.4V and 0.4V
Measured at Crossover
Measured at 1.5V
Measured at 1.5V
3V66 leads. Measured at 1.5V
Measured at Crossover t
8 =
t
8A
– t
8B
with all outputs running
Measured at 1.5V t
9 =
t
9A
– t
9B
Measured at 1.5V t
9 =
t
9A
– t
9B
Measured at 1.5V t
9 =
t
9A
– t
9B
Measured at 1.5V t
9 =
t
9A
– t
9B
CPU and PCI clock stabilization from
power-up
Measured with test loads
[4, 5]
Measured with test loads
[5]
Measured with test loads
[5]
1.0
t
9
t
9
t
9
t
9
3V66
48MHz
PCI
REF
CPUT/C, PCI
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Settle Time
600
600
600
1000
3
ps
ps
ps
ps
ms
t
RFM
V
OVS
V
UDS
V
OH
V
OL
V
OX
Notes:
2.
3.
4.
5.
CPUT/C
CPUT/C
CPUT/C
CPUT/C
CPUT/C
CPUT/C
Rise/Fall Matching
Overshoot
Undershoot
High-level Output Voltage Measured with test loads
[5]
Low-level Output Voltage
Crossover Voltage
30
V
oh
+ 0.2
V
V
V
V
mv
–0.2
0.65
0.0
250
0.74
0.05
550
Measured with test loads
[5]
Measured with test loads
[5]
All parameters specified with loaded outputs.
Duty cycle is measured at 1.5V when V
= 3.3V. When V
= 2.5V, duty cycle is measured at 1.25V.
Determined as a fraction of 2*(Trp – Trn)/(Trp +Trn) Where Trp is a rising edge and Trp is an intersecting falling edge.
The test load is R
s
= 33.2W, R
p
= 49.9W in test circuit.
DC Electrical Specifications
(continued)
Parameter
Description
Condition
Min.
Max.
Unit
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| CY28378OC | FTG for Pentium 4 and Intel 845 Series Chipset |
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| CY28400 | 100-MHz Differential Buffer for PCI Express and SATA |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY28378OC | 制造商:SPECTRALINEAR 制造商全稱:SPECTRALINEAR 功能描述:FTG for Pentium 4㈢ and Intel㈢ 845 Series Chipset |
| CY28378OCT | 制造商:SPECTRALINEAR 制造商全稱:SPECTRALINEAR 功能描述:FTG for Pentium 4㈢ and Intel㈢ 845 Series Chipset |
| CY28378OXC | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 Sys Clk Pentium 4 & Intel Brookdale 845 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY28378OXCT | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 Sys Clk Pentium 4 & Intel Brookdale 845 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY28381 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:High-Performance SiS645DX/648DX/650/651 Intel Pentium 4 Clock Synthesizer |
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