參數(shù)資料
型號: SN72HVD3082E
廠商: Texas Instruments, Inc.
英文描述: LOW POWER RS 485 TRANSCEIVER
中文描述: 低功耗RS 485 TRANSCEIVE?
文件頁數(shù): 7/19頁
文件大?。?/td> 369K
代理商: SN72HVD3082E
SLLS562C MARCH 2003 REVISED JUNE 2004
www.ti.com
7
50
CL = 50 pF
Signal
Generator
DE
D
0 V or 3 V
3 V if Testing A Output
0 V if Testing B Output
A
B
RL = 110
Output
S1
tPZH
tPHZ
0.5 V
DE
Output
1.5 V
1.5 V
2.5 V
3 V
0 V
VOH
VOff 0
Figure 5. Driver Enable/Disable Test Circuit and Waveforms, High Output
50
CL = 50 pF
Signal
Generator
DE
D
0 V or 3 V
0 V if Testing A Output
3 V if Testing B Output
RL = 110
Output
S1
tPZL
tPLZ
0.5 V
DE
Output
1.5 V
1.5 V
2.5 V
3 V
0 V
5 V
VOL
5 V
A
B
Figure 6. Driver Enable/Disable Test Circuit and Waveforms, Low Output
Voltage
Source
IOS
VO
Figure 7. Driver Short-Circuit Test
IO
VO
VID
Figure 8. Receiver Parameter Definitions
50
Signal
Generator
CL = 15 pF
50
Signal
Generator
A
VID
B
R
IO
VO
50%
90%
10%
1.5 V
0 V
VOH
VOL
tPLH
tPHL
tr
tf
Input B
Input A
Output
1.5 V
Figure 9. Receiver Switching Test Circuit and Waveforms
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