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参数资料
| 型号： | ADM3485EARZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS-485 HS 3.3V 8SOIC |
| 标准包装： | 1,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
| 其它名称： | ADM3485EARZ-REEL7-ND ADM3485EARZ-REEL7TR |
Data Sheet
ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
Rev. E | Page 5 of 20
TIMING SPECIFICATIONS—ADM3485/ADM3490/ADM3491
VCC = 3.3 V, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Differential Output Delay (tDD)
1
22
35
ns
RL = 60 Ω
(see Figure 20 and Figure 26)
Differential Output Transition Time (tTD)
3
8
25
ns
RL = 60 Ω
(see Figure 20 and Figure 26)
Propagation Delay, Low-to-High Level (tPLH)
7
22
35
ns
RL = 27 Ω
(see Figure 21 and Figure 27)
Propagation Delay, High-to-Low Level (tPHL)
7
22
35
ns
RL = 27 Ω
(see Figure 21 and Figure 27)
8
ns
RL = 27 Ω
(see Figure 21 and Figure 27)
DRIVER OUTPUT ENABLE/DISABLE TIMES (ADM3485/
ADM3491 ONLY)
Output Enable Time to Low Level (tPZL)
45
90
ns
RL = 110 Ω
(see Figure 23 and Figure 29)
Output Enable Time to High Level (tPZH)
45
90
ns
RL = 110 Ω
(see Figure 22 and Figure 28)
Output Disable Time from High Level (tPHZ)
40
80
ns
RL = 110 Ω
(see Figure 22 and Figure 28)
Output Disable Time from Low Level (tPLZ)
40
80
ns
RL = 110 Ω
(see Figure 23 and Figure 29)
Output Enable Time from Shutdown to Low Level (tPSL)
650
900
ns
RL = 110 Ω
(see Figure 23 and Figure 29)
Output Enable Time from Shutdown to High Level (tPSH)
650
900
ns
RL = 110 Ω
(see Figure 22 and Figure 28)
1 Measured on |tPLH (Y) tPHL (Y)| and |tPLH (Z) tPHL (Z)|.
TIMING SPECIFICATIONS—ADM3483/ADM3488
VCC = 3.3 V, TA = 25°C, unless otherwise noted.
Table 4.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DRIVER
Differential Output Delay (tDD)
600
900
1400
ns
RL = 60 Ω
Differential Output Transition Time (tTD)
400
700
1200
ns
RL = 60 Ω
Propagation Delay, Low-to-High Level (tPLH)
700
1000
1500
ns
RL = 27 Ω
Propagation Delay, High-to-Low Level (tPHL)
700
1000
1500
ns
RL = 27 Ω
100
ns
RL = 27 Ω
DRIVER OUTPUT ENABLE/DISABLE TIMES (ADM3483 ONLY)
Output Enable Time to Low Level (tPZL)
900
1300
ns
RL = 110 Ω
Output Enable Time to High Level (tPZH)
600
800
ns
RL = 110 Ω
Output Disable Time from High Level (tPHZ)
50
80
ns
RL = 110 Ω
Output Disable Time from Low Level (tPLZ)
50
80
ns
RL = 110 Ω
Output Enable Time from Shutdown to Low Level (tPSL)
1.9
2.7
μs
RL = 110 Ω
Output Enable Time from Shutdown to High Level (tPSH)
2.2
3.0
μs
RL = 110 Ω
1 Measured on |tPLH (Y) tPHL (Y)| and |tPLH (Z) tPHL (Z)|.
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