參數(shù)資料
型號: HD26C31
廠商: Hitachi,Ltd.
英文描述: Quadruple Differential Line Drivers With 3 State Outputs
中文描述: 四重差分線路驅(qū)動器,三態(tài)輸出
文件頁數(shù): 12/15頁
文件大小: 87K
代理商: HD26C31
HD26C31
12
Y
Z
"H"
"L"
I
OH
R
T
I
IN
(Receiver)
I
OL
Figure 3 Example of Driver Use-1
Y
Z
"H"
"L"
I
OH
R
T
R
T
I
IN
(Receiver)
Figure 4 Example of Driver Use-2
Y
Z
"H"
GND
V
OH
V
OL
R
T
R
T
V
OH
(Y)
V
OL
(Z)
10
20
50 100 200 500 1k
Termination Resistance R
T
(
)
2k
5k 10k 20k
50k
Output Voltage vs. Termination Resistance
0.001
0.01
0.1
1
10
O
O
(
O
(
Figure 5 Termination Resistance vs. Output Voltage Characteristics
A feature of termination implemented as shown in figure 7 is that power dissipation is low when the duty of
the transmitted signal is high.
However, care is required, since if R
T
is sufficiently small, when the output on the pulled-up side goes high,
a large current will flow and the output low level will rise.
Figure 8 shows the output characteristics when termination resistance R
T
is varied.
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