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參數(shù)資料
型號: ADM1485JRZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 6/11頁
文件大?。?/td> 0K
描述: IC TXRX RS-485 5V HS 8SOIC
產品培訓模塊: Power Line Monitoring
標準包裝: 2,500
類型: 收發(fā)器
驅動器/接收器數(shù): 1/1
規(guī)程: RS485
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SO
包裝: 帶卷 (TR)
REV.
–4–
ADM1485
Test Circuits
VOD
R
VOC
Test Circuit 1. Driver Voltage Measurement
VOD3
60
375
VTST
Test Circuit 2. Driver Voltage Measurement
RLDIFF
A
B
CL1
CL2
Test Circuit 3. Driver Propagation Delay
DE
0V OR 3V
DE IN
A
B
S1
CL
VOUT
RL
S2
VCC
Test Circuit 4. Driver Enable/Disable
RE
A
B
CL
VOUT
Test Circuit 5. Receiver Propagation Delay
RE
+1.5V
RE IN
S1
CL
VOUT
RL
S2
VCC
–1.5V
Test Circuit 6. Receiver Enable/Disable
Switching Characteristics
3V
0V
B
A
0V
–VO
VO
90% POINT
10% POINT
tR
tSKEW = tPLH tPHL
1/2VO
tPLH
1.5V
tPHL
90% POINT
10% POINT
tF
VO
Figure 1. Driver Propagation Delay, Rise/Fall Timing
DE
A, B
1.5V
2.3V
tZH
tZL
1.5V
3V
0V
VOL
VOH
0V
VOL + 0.5V
VOH – 0.5V
tHZ
tLZ
Figure 2. Driver Enable/Disable Timing
A, B
RO
0V
tPLH
1.5V
0V
tPHL
1.5V
VOH
VOL
tSKEW = tPLH tPHL
Figure 3. Receiver Propagation Delay
RE
R
1.5V
tZH
tZL
1.5V
3V
0V
VOL
VOH
VOL + 0.5V
VOH – 0.5V
tHZ
tLZ
O/P LOW
O/P HIGH
0V
Figure 4. Receiver Enable/Disable Timing
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