- 您现在的位置：买卖IC网 > PDF目录383322 > MAX1490E (Maxim Integrated Products, Inc.) 15kV ESD-Protected, Isolated RS-485/RS-422 PDF资料下载
参数资料
| 型号： | MAX1490E |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | RS-485 |
| 英文描述： | 15kV ESD-Protected, Isolated RS-485/RS-422 |
| 中文描述： | ±15kV ESD保护、隔离型、RS-485/RS-422数据接口 |
| 文件页数： | 16/21页 |
| 文件大小： | 487K |
| 代理商： | MAX1490E |
M
Complete, Isolated RS-485/RS-422
Data Interface
16
______________________________________________________________________________________
MAX1480B/MAX1480C/MAX1490B:
Reduced EMI and Reflections
The MAX1480B/MAX1480C/MAX1490B are slew-rate-
limited, minimizing EMI and reducing reflections
caused by improperly terminated cables. Figure 11
shows both the driver output waveform of a
MAX1480A/MAX1490A transmitting a 150kHz signal
and the Fourier analysis of that waveform. High-fre-
quency harmonics with large amplitudes are evident.
Figure 12 shows the same information for the slew-rate-
limited MAX1480B/MAX1480C/MAX1490B transmitting
the same signal. The high-frequency harmonics have
much lower amplitudes, and therefore the potential for
EMI is significantly reduced.
Table 3. Transmitting
Table 4. Receiving
Table 5. Transmitting
INPUT
*
(DI
′
)
Table 6. Receiving
1
0
X
INPUTS*
1
0
High-Z
OUTPUTS
0
1
High-Z
1
1
0
Figure 11. Driver Output Waveform and FFT Plot of
MAX1480A/MAX1490A Transmitting a 150kHz Signal
10dB/div
0Hz
5MHz
500kHz/div
Figure 12. Driver Output Waveform and FFT Plot of
MAX1480B/MAX1480C/MAX1490B Transmitting a 150kHz
Signal
10dB/div
0Hz
5MHz
500kHz/div
_____________________Function Tables
Half-Duplex Devices
(MAX1480A/MAX1480B/MAX1480C)
Full-Duplex Devices
(MAX1490A/MAX1490B)
DI
′
A
B
DE
′
≥
+0.2V
≤
-0.2V
Open
INPUTS*
0
1
0
V
A
- V
B
OUTPUT
(RO)
DE
′
0
0
0
0
1
1
0
Z
Y
0
1
1
0
1
OUTPUT
(RO)
≤
-0.2V
Open
≥
+0.2V
INPUT
(V
A
- V
B
)
X = Don’t care
High-Z = High impedance
* For DE
′
and DI
′
pin descriptions, see
Detailed Block Diagram
and Typical Application Circuit
(Figure 1 for MAX1480A/B/C,
Figure 2 for MAX1490A/B).
OUTPUTS
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1490EACPG | 15kV ESD-Protected, Isolated RS-485/RS-422 |
| MAX1480AEPI | Complete, Isolated RS-485/RS-422 Data Interface |
| MAX1480BEPI | Complete, Isolated RS-485/RS-422 Data Interface |
| MAX1480CEPI | Complete, Isolated RS-485/RS-422 Data Interface |
| MAX1480BCPI | Complete, Isolated RS-485/RS-422 Data Interface |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1490EACPCS | 制造商:Maxim Integrated Products 功能描述: |
| MAX1490EACPG | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX1490EACPG+ | 功能描述:RS-422/RS-485 接口 IC Isolated RS-485/422 Data Interface RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX1490EAEPG | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX1490EAEPG+ | 功能描述:RS-422/RS-485 接口 IC Isolated RS-485/422 Data Interface RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。