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參數(shù)資料
| 型號： | HWD490 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | RS-485 |
| 英文描述： | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| 中文描述： | 低功耗，限擺率限制RS-485/RS-422收發(fā)器 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大小： | 502K |
| 代理商： | HWD490 |
Low-Power, S lew-Rate-Limited
RS -485/RS -422 Transc eivers
_______________________________________________________S witc hing Waveforms
DI
3V
0V
Z
Y
V
O
0V
-V
O
V
O
1.5V
t
PLH
1/2 V
O
10%
t
R
90%
90%
t
PHL
1.5V
1/2 V
O
10%
t
F
V
DIFF
= V (Y) - V (Z)
V
DIFF
t
SKEW =
|t
PLH
- t
PHL
|
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
Y, Z
V
OL
Y, Z
0V
1.5V
1.5V
V
OL
+0.5V
V
OH
-0.5V
2.3V
2.3V
t
ZL(SHDN)
, t
ZL
t
LZ
t
ZH(SHDN)
, t
ZH
t
HZ
DE
V
OH
V
OL
V
ID
-V
ID
1.5V
0V
1.5V
OUTPUT
INPUT
0V
RO
A-B
t
PLH
t
PHL
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
V
CC
RO
RO
0V
1.5V
1.5V
V
OL
+ 0.5V
V
OH
- 0.5V
1.5V
1.5V
t
ZL(SHDN)
, t
ZL
t
LZ
t
ZH(SHDN)
, t
ZH
t
HZ
RE
_________________Func tion Tables
(
HWD
481/
HWD
483/
HWD
485/
HWD
487/
HWD
1487)
Figure 8. Driver Propagation Delays
Figure 9. Driver Enable and Disable Times (except HWD488 and
HWD490)
Figure 10. Receiver Propagation Delays
Figure 11. Receiver Enable and Disable Times (except HWD488
and HWD490)
Table 1. Transmitting
Table 2. Receiving
INPUTS
OUTPUT
RE
DE
A-B
RO
0
0
0
1
0
0
0
0
> +0.2V
< -0.2V
Inputs open
X
1
0
1
High-Z
*
X = Don't care
High-Z = High impedance
*
Shutdown mode for HWD481/HWD483/HWD487
INPUTS
OUTPUTS
RE
DE
DI
Z
Y
X
X
0
1
1
1
0
0
1
0
X
X
0
1
High-Z
High-Z
*
1
0
High-Z
High-Z
*
X = Don't care
High-Z = High impedance
*
Shutdown mode for HWD481/HWD483/HWD487
10
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相關(guān)代理商/技術(shù)參數(shù) |
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| HWD490C/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD490CPA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD490CSA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD490CUA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
| HWD490EPA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
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