- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361773 > W238 Clocks and Buffers PDF資料下載
參數(shù)資料
| 型號： | W238 |
| 英文描述： | Clocks and Buffers |
| 中文描述： | 時(shí)鐘和緩沖器 |
| 文件頁數(shù)： | 13/17頁 |
| 文件大?。?/td> | 175K |
| 代理商： | W238 |
W238
Document #: 38-07219 Rev. *A*
Page 13 of 17
AC Electrical Characteristics
T
A
= 0
°
C to +70
°
C, V
DDQ3
= 3.3V±5%, V
DDQ2
= 2.5V±5%
f
XTL
= 14.31818 MHz
Spread Spectrum function turned off
AC clock parameters are tested and guaranteed over stated operating conditions using the stated lump capacitive load at the
clock output.
[18]
66.6-MHz Host
Min.
Max.
T
Period
Host/CPUCLK Period
15.0
15.5
T
HIGH
Host/CPUCLK High Time
5.2
N/A
T
LOW
Host/CPUCLK Low Time
5.0
N/A
T
RISE
Host/CPUCLK Rise Time
0.4
1.6
T
FALL
Host/CPUCLK Fall Time
0.4
1.6
Notes:
18. Period, jitter, offset, and skew measured on rising edge at 1.25 for 2.5V clocks and at 1.5V for 3.3V clocks.
19. T
HIGH
is measured at 2.0V for 2.5V outputs, 2.4V for 3.3V outputs.
20. T
is measured at 0.4V for all outputs.
21. The time specified is measured from when V
DDQ3
achieves its nominal operating level (typical condition V
DDQ3
= 3.3V) until the frequency output is stable and
operating within specification.
22. T
RISE
and T
FALL
are measured as a transition through the threshold region V
ol
= 0.4V and V
oh
= 2.0V (1 mA) JEDEC specification.
Parameter
Description
100-MHz Host
Min.
10.0
3.0
2.8
0.4
0.4
133-MHz Host
Min.
7.5
1.87
1.67
0.4
0.4
Unit
ns
ns
ns
ns
ns
Notes
18
21
22
Max.
10.5
N/A
N/A
1.6
1.6
Max.
8.0
N/A
N/A
1.6
1.6
T
Period
T
HIGH
T
LOW
T
RISE
T
FALL
SDRAM CLK Period
SDRAM CLK High Time
SDRAM CLK Low Time
SDRAM CLK Rise Time
SDRAM CLK Fall Time
10.0
3.0
2.8
0.4
0.4
10.5
N/A
N/A
1.6
1.6
10.0
3.0
2.8
0.4
0.4
10.5
N/A
N/A
1.6
1.6
10.0
3.0
2.8
0.4
0.4
10.5
N/A
N/A
1.6
1.6
ns
ns
ns
ns
ns
18
21
22
T
Period
T
HIGH
T
LOW
T
RISE
T
FALL
APIC 33-MHz CLK Period
APIC 33-MHz CLK High Time
APIC 33-MHz CLK Low Time
APIC CLK Rise Time
APIC CLK Fall Time
30.0
12.0
12.0
0.4
0.4
N/A
N/A
N/A
1.6
1.6
30.0
12.0
12.0
0.4
0.4
N/A
N/A
N/A
1.6
1.6
30.0
12.0
12.0
0.4
0.4
N/A
N/A
N/A
1.6
1.6
ns
ns
ns
ns
ns
18
21
22
T
Period
T
HIGH
T
LOW
T
RISE
T
FALL
3V66 CLK Period
3V66 CLK High Time
3V66 CLK Low Time
3V66 CLK Rise Time
3V66 CLK Fall Time
15.0
5.25
5.05
0.5
0.5
16.0
N/A
N/A
2.0
2.0
15.0
5.25
5.05
0.5
0.5
16.0
N/A
N/A
2.0
2.0
15.0
5.25
5.05
0.5
0.5
16.0
N/A
N/A
2.0
2.0
ns
ns
ns
ns
ns
18, 20
21
22
T
Period
T
HIGH
T
LOW
T
RISE
T
FALL
PCI CLK Period
PCI CLK High Time
PCI CLK Low Time
PCI CLK Rise Time
PCI CLK Fall Time
30.0
12.0
12.0
0.5
0.5
N/A
N/A
N/A
2.0
2.0
30.0
12.0
12.0
0.5
0.5
N/A
N/A
N/A
2.0
2.0
30.0
12.0
12.0
0.5
0.5
N/A
N/A
N/A
2.0
2.0
ns
ns
ns
ns
ns
18, 19
21
22
tp
ZL
, tp
ZH
tp
LZ
, tp
ZH
Output Enable Delay (All outputs)
Output Disable Delay
(All outputs)
All Clock Stabilization from
Power-Up
1.0
1.0
10.0
10.0
1.0
1.0
10.0
10.0
1.0
1.0
10.0
10.0
ns
ns
t
stable
3
3
3
ms
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W23C4096-12 | x8 ROM (Mask Programmable) |
| W23C4096-15 | x8 ROM (Mask Programmable) |
| W23C4096-20 | x8 ROM (Mask Programmable) |
| W23C8192-12 | x8 ROM (Mask Programmable) |
| W23C8192-15 | x8 ROM (Mask Programmable) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W238-02 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Clocks and Buffers |
| W238E32A | 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:Replaced by W238-E1-7 |
| W23C4096-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 ROM (Mask Programmable) |
| W23C4096-15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 ROM (Mask Programmable) |
| W23C4096-20 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 ROM (Mask Programmable) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。