CDCU877A

更新时间： 2024-11-08 22:28:51

品牌	Logo	应用领域
德州仪器 - TI		时钟驱动器
页数	文件大小	规格书
17页	408K
描述
1.8V PHASE LOCK LOOP CLOCK DRIVER

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中文翻译

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数据手册

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CDCU877A 数据手册

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SCAS688A − JUNE 2003 − REVISED JANUARY 2004

1.8-V Phase Lock Loop Clock Driver for

Double Data Rate (DDR II) Applications

External Feedback Pins (FBIN, FBIN) are

Used to Synchronize the Outputs to the

Input Clocks

Spread Spectrum Clock Compatible

Operating Frequency: 10 MHz to 400 MHz

Low Current Consumption: <135 mA

Low Jitter (Cycle-Cycle): 30 ps

Low Output Skew: 35 ps

Single-Ended Input and Single-Ended

Output Modes

Meets or Exceeds JESD82-8 PLL Standard

for PC2-3200/4300

Fail-Safe Inputs

Low Period Jitter: 20 ps

Low Dynamic Phase Offset:: 15 ps

Low Static Phase Offset:: 50 ps

Distributes One Differential Clock Input to

Ten Differential Outputs

52-Ball µBGA (MicroStar Junior BGA,

0,65-mm pitch) and 40-Pin MLF

description

The CDCU877 is a high-performance, low-jitter, low-skew, zero-delay buffer that distributes a differential clock input

pair (CK, CK) to ten differential pairs of clock outputs (Yn, Yn) and to one differential pair of feedback clock outputs

(FBOUT, FBOUT). The clock outputs are controlled by the input clocks (CK, CK), the feedback clocks (FBIN, FBIN),

the LVCMOS control pins (OE, OS), and the analog power input (AV ). When OE is low, the clock outputs, except

FBOUT/FBOUT, 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 V . When OS is high, OE functions as previously described. When

OS and OE are both low, OE has no affect on Y7/Y7, they are free running. When AV

off and bypassed for test purposes.

is grounded, the PLL is turned

When both clock inputs (CK, CK) are logic low, the device enters in a low power mode. An input logic detection circuit

on the differential inputs, independent from input buffers, detects the logic low level and performs in a low power state

where all outputs, the feedback, and the PLL are off. When the clock inputs transition from being logic low to being

differential signals, the PLL turns back on, the inputs and the outputs are enabled, and the PLL obtains phase lock

between the feedback clock pair (FBIN, FBIN) and the clock input pair (CK, CK) within the specified stabilization time.

The CDCU877 is able to track spread spectrum clocking (SSC) for reduced EMI. This device operates from –40°C

to 85°C.

AVAILABLE OPTIONS

52-Ball BGA

40-Pin MLF

CDCU877ZQL

(Pb-Free)

−40°C to 85°C

CDCU877RTB

CDCU877AZQL

(Pb-Free)

CDCU877ARTB

−40°C to 85°C

CDCU877GQL

CDCU877AGQL

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

MicroStar Junior is a trademark of Texas Instruments.

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POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...17

中文翻译

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与CDCU877A相关器件

型号	品牌	获取价格	描述	数据表
CDCU877AGQL	TI	获取价格	1.8V PHASE LOCK LOOP CLOCK DRIVER
CDCU877AGQLR	TI	获取价格	IC 877 SERIES, PLL BASED CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PBGA52, 0.
CDCU877AGQLT	TI	获取价格	1.8-V PHASE LOCK LOOP CLOCK DRIVER
CDCU877ANMKR	TI	获取价格	1.8-V PHASE LOCK LOOP CLOCK DRIVER
CDCU877ANMKT	TI	获取价格	1.8-V PHASE LOCK LOOP CLOCK DRIVER
CDCU877ARHA	TI	获取价格	1.8-V PHASE LOCK LOOP CLOCK DRIVER
CDCU877ARHAR	TI	获取价格	1.8-V PHASE LOCK LOOP CLOCK DRIVER
CDCU877ARHARG4	TI	获取价格	1.8-V PHASE LOCK LOOP CLOCK DRIVER
CDCU877ARHAT	TI	获取价格	1.8V Phase-Lock Loop Clock Driver for DDR2 SDRAM Applications 40-VQFN -40 to 85
CDCU877ARHATG4	TI	获取价格	1.8V Phase-Lock Loop Clock Driver for DDR2 SDRAM Applications 40-VQFN -40 to 85

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