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参数资料
| 型号： | HWD483EPA |
| 厂商： | Electronic Theatre Controls, Inc. |
| 元件分类： | RS-485 |
| 英文描述： | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| 中文描述： | 低功耗，限摆率限制RS-485/RS-422收发器 |
| 文件页数： | 20/20页 |
| 文件大小： | 502K |
| 代理商： | HWD483EPA |
HWD483/HWD487/HWD488/HWD489:
Reduced EMI and Reflections
The HWD483 and HWD487–HWD489 are slew-rate limit-
ed, minimizing EMI and reducing reflections caused by
improperly terminated cables. Figure 12 shows the dri-
ver output waveform and its Fourier analysis of a
150kHz signal transmitted by a HWD481, HWD485,
HWD490, HWD491, or HWD1487. High-frequency har-
monics with large amplitudes are evident. Figure 13
shows the same information displayed for a HWD483,
HWD487, HWD488, or HWD489 transmitting under the
same conditions. Figure 13’s high-frequency harmonics
have much lower amplitudes, and the potential for EMI
is significantly reduced.
Low-Power, Slew-Rate-Limited
RS-485/RS-422 Transceivers
R
Y
Z
VOD
VOC
RECEIVER
OUTPUT
TEST POINT
1k
S1
S2
VCC
CRL
15pF
DI
DE
3V
Y
Z
CL1
CL2
A
B
RO
RE
RDIFF
VID
OUTPUT
UNDER TEST
500
S1
S2
VCC
CL
_________________________________________________________________Test Circuits
Figure 4. Driver DC Test Load
Figure 5. Receiver Timing Test Load
Figure 6. Driver/Receiver Timing Test Circuit
Figure 7. Driver Timing Test Load
9
相关PDF资料 |
PDF描述 |
|---|---|
| HWD483ESA | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD483MJA | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD485 | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD485CPA | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD485CSA | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HWD483ESA | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD483MJA | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD485 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD485C/D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD485CPA | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
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