参数资料
型号: SN75107BJ
厂商: TEXAS INSTRUMENTS INC
元件分类: Buffer和线驱动
英文描述: DUAL LINE RECEIVER, CDIP14
文件页数: 6/19页
文件大小: 296K
代理商: SN75107BJ
SN55107A, SN75107A, SN75107B, SN75108A
DUAL LINE RECEIVERS
SLLS069D – JANUARY 1977 – REVISED APRIL 1998
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Two methods of terminating a transmission line to reduce reflections are shown in Figure 16. The first method
uses the resistors as the attenuation network and line termination. The second method uses two additional
resistors for the line terminations.
APPLICATION INFORMATION
R3
R1
(see Note A)
R2
(see Note A)
R2
R1
R3 = R1 + R2 = ZO /2
Method 2
R2
R1
R3
R1 + R2 > ZO
R3 = ZO /2
R2
(see Note A)
R3
R1
Method 1
NOTE A: To minimize the loading, the values of R1 and R2 should be fairly large. Examples of possible values are shown in Table 1.
Figure 16. Termination Techniques
For party-line operation, method 2 should be used as shown in Figure 17.
Attenuation Network
R3
+
Z
O
2
R3
+
Z
O
2
R3
+
Z
O
2
R3
+
Z
O
2
Figure 17. Party-Line Termination Technique
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