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參數(shù)資料
型號: CDCR83DBQRG4
廠商: Texas Instruments
文件頁數(shù): 11/16頁
文件大?。?/td> 0K
描述: IC DIRECT RAMBUS CLK GEN 24-QSOP
標(biāo)準(zhǔn)包裝: 2,500
類型: 時鐘/頻率發(fā)生器,多路復(fù)用器
PLL:
主要目的: 存儲器,RDRAM
輸入: TTL
輸出: 時鐘
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 無/是
頻率 - 最大: 400MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 24-SSOP/QSOP
包裝: 帶卷 (TR)
CDCR83
DIRECT RAMBUS CLOCK GENERATOR
SCAS632B APRIL 2001 REVISED OCTOBER 2005
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PLL divider selection
Table 1 lists the supported REFCLK and BUSCLK frequencies. Other REFCLK frequencies are permitted,
provided that (267 MHz < BUSCLK < 400 MHz) and (33 MHz < REFCLK < 100 MHz).
Table 1. REFCLK and BUSCLK Frequencies
MULT0
MULT1
REFCLK
(MHz)
MULTIPLY
RATIO
BUSCLK
(MHz)
0
67
4
267
0
1
50
6
300
0
1
67
6
400
1
33
8
267
1
50
8
400
1
0
67
16/3
356
Table 2. Clock Output Driver States
STATE
PWRDNB
STOPB
CLK
CLKB
Powerdown
0
X
GND
CLK stop
1
0
VX, STOP
Normal
1
PACLK/PLLCLK/
REFCLK
PACLKB/PLLCLKB/
REFCLKB
Depending on the state of S0, S1, and S2
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage range, VDD (see Note 1)
0.5 V to 4 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO, at any output terminal
0.5 V to VDD + 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range,VI, at any input terminal
0.5 V to VDD + 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation
see Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA
40
°C to 85°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to the GND terminals.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
DBQ
1400 mW
11 mW/
°C
905 mW
740 mW
This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with no air flow.
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