參數(shù)資料
型號(hào): A54SXxxA
廠商: Electronic Theatre Controls, Inc.
元件分類: FPGA
英文描述: SX-A Family FPGAs
中文描述: 的SX - A系列FPGA的
文件頁(yè)數(shù): 35/108頁(yè)
文件大?。?/td> 720K
代理商: A54SXXXA
SX-A Family FPGAs
v5.1
2-15
Output Buffer Delays
AC Test Loads
Figure 2-4
Output Buffer Delays
To AC Test Loads (shown below)
PAD
D
E
TRIBUFF
In
GND
50%
Out
V
OL
1.5 V
50%
V
OH
1.5 V
En
GND
50%
V
CC
Out
1.5 V
V
OL
50%
10%
En
GND
50%
Out
GND
1.5 V
50%
90%
V
CC
V
CC
V
CC
t
ENZH
t
ENHZ
t
ENZL
t
ENLZ
t
DLH
Figure 2-5
AC Test Loads
35 pF
V
CC
GND
35 pF
V
CC
GND
5 pF
R to V
CC
for t
PZL
R to GND for t
PZH
R = 1 k
R to V
for tPZL
R to GND for tPZH
R = 1 k
To the Output
Under Test
To the Output
Under Test
To the Output
Under Test
Load 1
(Used to measure
propagation delay)
Load 2
(Used to measure enable delays)
Load 3
(Used to measure disable delays)
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