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參數(shù)資料
| 型號(hào)： | XRK4991 |
| 廠商： | Exar Corporation |
| 英文描述： | 3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
| 中文描述： | 3.3高速（85兆赫）可編程相偏時(shí)鐘緩沖器 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 98K |
| 代理商： | XRK4991 |
xr
REV. 1.0.1
XRK4991
3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER
5
PLL_BYPASS
The PLL_BYPASS input is a tri-level input. In normal system operation, this pin is connected to ground.
In normal operation (tied LOW) all outputs will function based only on the connection of their own function
select inputs (SELx[1:0]) and the waveform characteristics of the PLL.
If the PLL_BYPASS input is forced to its MID or HIGH state the device will operate in PLL bypass mode, with
the phase locked loop disconnected, and CLKIN waveforms will directly control all outputs. Relative output to
output timing is controlled by the SELx[1:0], the same as in normal mode.
F
IGURE
3. T
YPICAL
O
UTPUTS
WITH
FB_IN C
ONNECTED
TO
A
Z
ERO
-S
KEW
O
UTPUT
(N/A)
LL
LM
LH
ML
MM
MH
HL
HM
HH
(N/A)
(N/A)
LM
LH
(N/A)
ML
(N/A)
MM
(N/A)
MH
(N/A)
HL
HM
LL/HH
(N/A)
HH(D)
-6t
U
-4t
U
-3t
U
-2t
U
-1t
U
0t
U
+1t
U
+2t
U
+3t
U
+4t
U
+6t
U
DIVIDED
INVERT
SELA[1:0]
SELB[1:0]
SELC[1:0]
SELD[1:0]
FB_IN
CLKIN
t
0
-
U
t
0
-
U
t
0
-
U
t
0
-
U
t
0
-
U
t
0
-
U
t
0
t
0
+
U
t
0
+
U
t
0
+
U
t
0
+
U
t
0
+
U
t
0
+
U
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| XRK4991CJ-2 | 3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
| XRK4991IJ-2 | 3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
| XRK4991IJ-5 | 3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRK49911 | 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V HIGH-SPEED (110 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
| XRK49911CJ-2 | 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V HIGH-SPEED (110 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
| XRK49911CJ-5 | 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V HIGH-SPEED (110 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
| XRK49911CJ-7 | 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V HIGH-SPEED (110 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
| XRK49911IJ-2 | 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V HIGH-SPEED (110 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER |
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