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参数资料
| 型号： | MPC991FAR2 |
| 厂商： | MOTOROLA INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | PLL BASED CLOCK DRIVER, 13 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52 |
| 封装： | TQFP-52 |
| 文件页数： | 3/9页 |
| 文件大小： | 147K |
| 代理商： | MPC991FAR2 |
MPC990 MPC991
TIMING SOLUTIONS
BR1333 — Rev 6
3
MOTOROLA
FUNCTION TABLE 2
fselFB2
fselFB1
fselFB0
QFB
0
1
0
1
0
1
÷2
÷4
÷6
÷8
1
0
1
0
1
0
1
÷8
÷16
÷24
÷32
FUNCTION TABLE 3
Control Pin
Logic ‘0’
Logic ‘1’
PLL_En
Enable PLL
Bypass PLL
VCO_Sel
fVCO
fVCO/2
Ref_Sel
xtal or ECL/PECL
Test_Clk
MR
—
Reset Outputs
SYNC_Sel
SYNC Outputs
Match Qc Outputs
Figure 2. MPC990/991 Logic Diagram
VCO
PHASE
DETECTOR
LPF
PLL_En
VCO_Sel
ECL_Clk
Test_Clk
Ref_Sel
Ext_FB
Qa0
Qa1
Qa2
Qa3
Qb0
Qb1
Qb2
Qb3
Qc0
Qc1
Qc2
Qd0
Qd1
QFB
FREQUENCY
GENERATOR
SYNC
MR
fsela0:3
fselFB0:2
SYNC_Sel
(Pulldown)
MPC991
MPC990
Xtal
Osc
NOTE: ECL_Clk, Ext_FB have internal pulldowns, while ECL_Clk, Ext_FB have external
pullups to ensure stability under open input conditions.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC992 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:LOW VOLTAGE PLL CLOCK DRIVER |
| MPC992D33 F44A WAF | 制造商:Motorola Inc 功能描述: |
| MPC993 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Dynamic Switch PLL Clock Driver |
| MPC9992 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:3.3 DIFFRERENTIAL ECL/PECL PLL CLOCK GENERATOR |
| MPC9992AC | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
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