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參數資料
| 型號： | MC88920DW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | LOW SKEW CMOS PLL CLOCK DRIVER With Power-Down/ Power-Up Feature |
| 中文描述： | 88920 SERIES, PLL BASED CLOCK DRIVER, 5 TRUE OUTPUT(S), 1 INVERTED OUTPUT(S), PDSO20 |
| 封裝： | PLASTIC, SOIC-20 |
| 文件頁數： | 7/10頁 |
| 文件大?。?/td> | 116K |
| 代理商： | MC88920DW |
MC88920
TIMING SOLUTIONS
BR1333 — REV 5
7
MOTOROLA
Figure 3. MC68040 P–Clock Input Termination Scheme
88920
2X_Q
OUTPUT
68040
P–CLOC
K
INPUT
Rs = Zo – 7
Rs
Zo (CLOCK
TRACE)
Figure 5. Logical Representation of the MC88920 With
Input/Output Frequency Relationships
2X_Q
Q0
Q1
Q2
Q3
Q/2
RST_OUT
SYNC
MR
PLL_EN
RST_IN
12.5MHz
CRYSTAL
OSCILLATOR
50MHz P–CLOCK OUT-
PUT
25MHz
B–CLOCK
AND SYSTEM
OUTPUTS
ANALOG GND
CL
VCC
1K
RST_OUT PIN
INTERNAL
LOGIC
Figure 4. RST_OUT Test Circuit
RP
RP = 1.5Zo
Figure 6. Output/Input Switching Waveforms and Timing Relationships
SYNC Input
Q0–Q2 Outputs
Q3 Output
2X_Q Output
Q/2 Output
tCYCLE SYNC Input
tSKEWall
tSKEWf
tSKEWr
tSKEWf
tSKEWr
tCYCLE ‘Q’ Outputs
Timing Notes
1. The MC88920 aligns rising edges of the outputs and the SYNC input, therefore the SYNC input does not require a 50%
duty cycle.
2. All skew specs are measured between the VCC/2 crossing point of the appropriate output edges. All skews are specified as
‘windows’, not as a
±
deviation around a center point.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC88920EG | 功能描述:IC PLL CLOCK DRIVER 20-SOIC RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數:- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| MC88920EGR2 | 功能描述:IC PLL CLOCK DRIVER 20-SOIC RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數:- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| MC88921 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW SKEW CMOS PLL CLOCK DRIVER With Power-Down/ Power-Up Feature |
| MC88921DW | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW SKEW CMOS PLL CLOCK DRIVER With Power-Down/ Power-Up Feature |
| MC889AL | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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