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參數(shù)資料
| 型號(hào)： | MAX1480ECCPI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 通用總線(xiàn)功能 |
| 英文描述： | 15kV ESD-Protected, Isolated RS-485/RS-422 |
| 中文描述： | LINE TRANSCEIVER, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁(yè)數(shù)： | 16/21頁(yè) |
| 文件大小： | 487K |
| 代理商： | MAX1480ECCPI |
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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
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
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1480ECCPI+ | 功能描述:RS-422/RS-485 接口 IC Isolated RS-422/485 Data Interface RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX1480ECEPI | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX1480ECEPI+ | 功能描述:RS-422/RS-485 接口 IC Isolated RS-422/485 Data Interface RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX14811CTN+ | 制造商:Maxim Integrated Products 功能描述:DUAL, UNIPOLAR/BIPOLAR, HIGH-VOLTAGE DIGITAL PULSERS WITH FA - Rail/Tube |
| MAX14811CTN+T | 制造商:Maxim Integrated Products 功能描述:DUAL, UNIPOLAR/BIPOLAR, HIGH-VOLTAGE DIGITAL PULSERS WITH FA - Tape and Reel |
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