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參數(shù)資料
| 型號(hào)： | SP208EEA |
| 英文描述： | +5V High Performance RS232 Transceivers |
| 中文描述： | 5V的高性能RS232收發(fā)器 |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 160K |
| 代理商： | SP208EEA |
7
SP207EDS/09
SP207E 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 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 virtu-
ally 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
SP211E,
and
SP213E
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:
SP211E:
+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
SP213E:
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 |
|---|---|
| SP213EHEA | High Speed 5V High Performance RS232 Transceivers |
| SP211EHCA | High Speed 5V High Performance RS232 Transceivers |
| SP211EHCT | High Speed 5V High Performance RS232 Transceivers |
| SP211EHEA | High Speed 5V High Performance RS232 Transceivers |
| SP207EHCA | High Speed 5V High Performance RS232 Transceivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP208EEA-L | 功能描述:RS-232接口集成電路 RS232 4Tx/4Rx temp -40C to 85C RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| SP208EEA-L | 制造商:Exar Corporation 功能描述:IC RS-232 TRANSCEIVER 5.5V SSOP-24 制造商:Exar Corporation 功能描述:IC, RS-232 TRANSCEIVER, 5.5V, SSOP-24 |
| SP208EEA-L/TR | 功能描述:RS-232接口集成電路 5V 4-DRVR/4-RCVR RS-232 -40-85C RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| SP208EEP | 制造商:Exar Corporation 功能描述:Line Transceiver, 4-Driver, 4-Receiver, 24 Pin, Plastic, DIP |
| SP208EEP-L | 制造商:Exar Corporation 功能描述:TRANSCEIVER RS-232 +5V DIP24 208 |
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