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參數(shù)資料
| 型號： | XCR3128-15PC128I |
| 廠商： | Xilinx, Inc. |
| 英文描述： | XCR3128: 128 Macrocell CPLD |
| 中文描述： | XCR3128：128個宏單元CPLD |
| 文件頁數(shù)： | 14/18頁 |
| 文件大?。?/td> | 126K |
| 代理商： | XCR3128-15PC128I |
R
XCR3128: 128 Macrocell CPLD
DS034 (v1.2) August 10, 2000
www.xilinx.com
1-800-255-7778
14
Switching Characteristics
The test load circuit and load values for the AC Electrical Characteristics are illustrated below.
V
CC
V
IN
V
OUT
C1
R1
R2
S1
S2
COMPONENT
VALUES
390
390
35 pF
R1
R2
C1
MEASUREMENT
S1
S2
t
PZH
t
PZL
t
P
Open
Closed
Closed
Closed
Closed
Closed
SP00477
Note:
For t
PHZ
and t
PLZ
C = 5 pF, and 3-state levels are
measured 0.5V from steady-state active level.
Figure 6: t
PD_PAL
vs. Output Switching
NUMBER OF OUTPUTS SWITCHING
1
2
4
8
12
16
7.5
t
PD_PAL
7.9
8.3
8.7
V
DD
= 3.3V, 25
°
C
SP00466A
9.1
Figure 7: Voltage Waveform
Table 6: t
PD_PAL
vs. Number of Outputs Switching
(V
CC
= 3.3 V, T = 25
°
C)
Number Of
Outputs
Typical (ns)
1
2
4
8
12
16
7.9
8
8.1
8.3
8.4
8.6
90%
10%
1.5ns
1.5ns
+3.0V
0V
t
R
t
F
MEASUREMENTS:
All circuit delays are measured at the +1.5V level of
inputs and outputs, unless otherwise specified.
Input Pulses
SP00368
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