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參數(shù)資料
| 型號： | SP207BEA |
| 元件分類： | RS-232 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | 5V的高速RS - 232收發(fā)器與0.1uF電容 |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 204K |
| 代理商： | SP207BEA |
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
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SP207BEA/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:+5V High-Speed RS-232 Transceivers with 0.1mF Capacitors |
| SP207BEA-L | 制造商:Exar Corporation 功能描述: |
| SP207BET | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:+5V High-Speed RS-232 Transceivers with 0.1mF Capacitors |
| SP207BET/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:+5V High-Speed RS-232 Transceivers with 0.1mF Capacitors |
| SP207CA | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:+5V High-Speed RS-232 Transceivers with 0.1mF Capacitors |
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