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參數(shù)資料
| 型號： | 97U877AHLF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時(shí)鐘及定時(shí) |
| 英文描述： | 97U SERIES, PLL BASED CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PBGA52 |
| 封裝： | PLASTIC, VFBGA-52 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大小： | 215K |
| 代理商： | 97U877AHLF |
2
ICS97U877
0792A—04/15/04
Pin Descriptions
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The PLL clock buffer, ICS97U877, is designed for a VDDQ of 1.8 V, a AVDD of 1.8 V and differential data input and output
levels. Package options include a plastic 52-ball VFBGA and a 40-pin MLF.
ICS97U877 is a zero delay buffer that distributes a differential clock input pair (CLK_INT, CLK_INC) to ten differential
pair of clock outputs (CLKT[0:9], CLKC[0:9]) and one differential pair feedback clock outputs (FB_OUTT, FBOUTC).
The clock outputs are controlled by the input clocks (CLK_INT, CLK_INC), the feedback clocks (FB_INT, FB_INC), the
LVCMOS program pins (OE, OS) and the Analog Power input (AVDD).When OE is low, the outputs (except FB_OUTT/
FB_OUTC) are disabled while the internal PLL continues to maintain its locked-in frequency. OS (Output Select) is a
program pin that must be tied to GND or VDDQ.When OS is high, OE will function as described above.When OS is low,
OE has no effect on CLKT7/CLKC7 (they are free running in addition to FB_OUTT/FB_OUTC).When AVDD is grounded,
the PLL is turned off and bypassed for test purposes.
When both clock signals (CLK_INT, CLK_INC) are logic low, the device will enter a low power mode. An input logic
detection circuit on the differential inputs, independent from the input buffers, will detect the logic low level and perform
a low power state where all outputs, the feedback and the PLL are OFF.When the inputs transition from both being logic
low to being differential signals, the PLL will be turned back on, the inputs and outputs will be enabled and the PLL
will obtain phase lock between the feedback clock pair (FB_INT, FB_INC) and the input clock pair (CLK_INT, CLK_INC)
within the specified stabilization time tSTAB.
The PLL in ICS97U877 clock driver uses the input clocks (CLK_INT, CLK_INC) and the feedback clocks (FB_INT,
FB_INC) to provide high-performance, low-skew, low-jitter output differential clocks (CLKT[0:9], CLKC[0:9]).ICS97U877
is also able to track Spread Spectrum Clocking (SSC) for reduced EMI.
ICS97U877 is characterized for operation from 0°C to 70°C.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 97U877AHLFT | 功能描述:時(shí)鐘驅(qū)動器及分配 1.8V DDR-II PLL Clock Driver RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| 97U877AHT | 功能描述:時(shí)鐘驅(qū)動器及分配 1.8V DDR-II PLL Clock Driver RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| 97U877AK | 制造商:Integrated Device Technology Inc 功能描述:97U877AK, ZERO DELAY PLL CLOCK DRIVER SINGLE 95MHZ TO 370MHZ - Trays 制造商:Integrated Device Technology Inc 功能描述:IDT 97U877AK, Zero Delay PLL Clock Driver Single 95MHz to 370MHz 40-Pin VFQFPN EP |
| 97U877AKLF | 功能描述:時(shí)鐘驅(qū)動器及分配 1.8V DDR-II PLL Clock Driver RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| 97U877AKLFT | 功能描述:時(shí)鐘驅(qū)動器及分配 1.8V DDR-II PLL Clock Driver RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
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