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參數資料
| 型號： | 7B991 |
| 廠商： | Maxwell Technologies, Inc |
| 英文描述： | Programmable Skew Clock Buffer (PSCB) |
| 中文描述： | 可編程偏移時鐘緩沖器（PSCB） |
| 文件頁數： | 9/17頁 |
| 文件大小： | 253K |
| 代理商： | 7B991 |
M
9
All data sheets are subject to change without notice
2002 Maxwell Technologies.
All rights reserved.
Programmable Skew Clock Buffer (PSCB)
7B991
09.23.02 Rev 4
F
IGURE
4. T
YPICAL
O
UTPUTS
WITH
FB C
ONNECTED
TO
A
Z
ERO
-S
KEW
O
UTPUT1
1. FB connected to an output selected for
“
zero
”
skew (i.e. xF1 = xF0 = MID)
T
ABLE
9. 7B991 P
ROGRAMMABLE
S
KEW
C
ONFIGURATIONS
1
1. For all three state inputs. HIGH indicates a connection to V
CC
. LOW indicates a connection to GND, and MID indicates an open
connections. Internal termnation circuitry holds an inconnected input to V
CC
/2.
F
UNCTION
S
ELECTS
O
UTPUT
F
UNCTIONS
1F1, 2F1, 3F1, 4F1
1F0, 2F0, 3F0, 4F0
1Q0, 1Q1, 2Q0, 2Q1
3Q0, 3Q1
4Q0, 4Q1
LOW
LOW
LOW
MID
MID
MID
HIGH
HIGH
HIGH
LOW
MID
HIGH
LOW
MID
HIGH
LOW
MID
HIGH
-4t
U
-3t
U
-2t
U
-1t
U
0t
U
+1t
U
+2t
U
+3t
U
+4t
U
Divide by 2
-6t
U
-4t
U
-2t
U
0t
U
+2t
U
+4t
U
+6t
U
Divide by 4
Divide by 2
-6t
U
-4t
U
-2t
U
0t
U
+2t
U
+4t
U
+6t
U
Inverted
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