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參數(shù)資料
| 型號(hào)： | SP207EHCA |
| 英文描述： | High Speed 5V High Performance RS232 Transceivers |
| 中文描述： | 高速5V的高性能RS232收發(fā)器 |
| 文件頁(yè)數(shù)： | 7/16頁(yè) |
| 文件大?。?/td> | 204K |
| 代理商： | SP207EHCA |
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7
SP207EHDS/08
SP207EH Series High Performance Transceivers
Copyright 2000 Sipex Corporation
Figure 4. Charge Pump — Phase 3
V
CC
= +5V
–5V
+5V
–5V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
C
3
C
4
+
+
+
+
–
–
–
–
Receivers
The high performance receivers of the
SP207EH
Series
can accept input signals at a typical data
rate of 500Kbps. The receivers convert RS-232
input signals to inverted TTL signals. The
receivers convert RS-232 input signals to
inverted TTL signals. Since the input is usually
from a transmission line where long cable lengths
and system interference can degrade the signal,
the inputs have a typical hysteresis margin of
500mV. This ensures that the receiver is
virtually immune to noisy transmission lines.
Should an input be left unconnected, a 5k
pulldown resistor to ground will commit the
output of the receiver to a high state.
SHUTDOWN MODE
The
SP211EH,
and
SP213EH
all feature a
control input which will disable the device and
reduce the power supply current to less than
10
μ
A, making the parts ideal for battery–
powered systems. In the “shutdown” mode the
receivers and transmitters will both be tri–stated.
The V
+
output of the charge pump will discharge
to V
, and the V
–
output will discharge to
ground. Products with the Wake-Up function
can enable or disable the receivers during
shutdown.
Figure 5. Charge Pump — Phase 4
V
CC
= +5V
+10V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
C
3
C
4
+
+
+
+
–
–
–
–
For complete shutdown to occur and the 10
μ
A
power drain to be realized, the following
conditions must be met:
SP211EH
:
+5V must be applied to the SD pin
ENABLE must be either 0V, +5.0V or not
connected
the transmitter inputs must be either +5.0V
or not connected
V
CC
must be +5V
Receiver inputs must be >0V and <+5V
SP213EH
:
0V must be applied to the SD pin
ENABLE must be either 0V, +5.0V or not
connected
the transmitter inputs must be either +5.0V
or not connected
V
CC
must be +5V
Receiver inputs must be >0V and <+5V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP207EHCP | High Speed 5V High Performance RS232 Transceivers |
| SP207EHCT | High Speed 5V High Performance RS232 Transceivers |
| SP207EHEA | High Speed 5V High Performance RS232 Transceivers |
| SP207EHEP | High Speed 5V High Performance RS232 Transceivers |
| SP207EHET | High Speed 5V High Performance RS232 Transceivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP207EHCA-L | 制造商:Exar Corporation 功能描述:TRANSCEIVER RS-232 HI SPEED 207 |
| SP207EHCP | 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:High Speed +5V High Performance RS232 Transceivers |
| SP207EHCT | 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:High Speed +5V High Performance RS232 Transceivers |
| SP207EHCT-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP207EHEA | 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:High Speed +5V High Performance RS232 Transceivers |
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