參數(shù)資料
型號(hào): 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(shí)鐘緩沖器(PSCB)
文件頁數(shù): 5/17頁
文件大小: 253K
代理商: 7B991
M
5
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
1. TTL AC T
EST
L
OAD
F
IGURE
2. TTL I
NPUT
T
EST
W
AVEFORM
T
ABLE
7. AC E
LECTRICAL
C
HARACTERISTICS
1,2,3
(V
CC
= 5V ±10%, T
A
= -40
TO
85
°
C,
UNLESS
OTHERWISE
SPECIFIED
)
S
YMBOL
P
ARAMETER
S
UBGROUPS
M
IN
T
YP
M
AX
U
NIT
Operating Clock Frequency in MHz
FS = LOW
1,4
f
NOM
9, 10, 11
15
--
30
MHz
FS = MID
1,4
FS = HIGH
1,4,5
25
40
--
--
50
80
REF Pulse Width HIGH
REF Pulse Width LOW
Programmable Skew Unit
Zero Output Matched-Pair Skew (XQ0, XQ1)
6,7
Zero Output Skew (All Outputs)
6,8,9
Output Skew (Rise-Rise, Fall-Fall, Same Class Out-
puts)
6,10
Output Skew (Rise-Fall, Nomnal-Inverted, Divided-
Divided)
6,10
Output Skew (Rise-Rise, Fall-Fall, Different Class
Outputs)
6,10
Output Skew (Rise-Fall, Nomnal-Divided, Divided-
Inverted)
6,10
Device-to-Device Skew
1,11,12
Propagation Delay, REF Rise to FB Rise
Output Duty Cycle Variation
13
t
RPWH
t
RPWL
t
U
t
SKEWPR
t
SKEW0
t
SKEW1
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
5.0
5.0
--
--
See Table 2
0.1
0.3
0.6
--
--
ns
ns
--
--
--
0.50
0.75
1.0
ns
ns
ns
t
SKEW2
9, 10, 11
--
1.0
1.5
ns
t
SKEW3
9, 10, 11
--
0.7
1.2
ns
t
SKEW4
9, 10, 11
--
1.2
1.7
ns
t
DEV
t
PD
t
ODCV
9, 10, 11
9, 10, 11
9, 10, 11
--
-1
-1.2
--
0.0
0.0
1.65
1
1.2
ns
ns
ns
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