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參數資料
| 型號： | SP208EHEP |
| 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 |
| 文件頁數： | 8/15頁 |
| 文件大?。?/td> | 213K |
| 代理商： | SP208EHEP |
REV: A DATE:12/03/2003
+5V High-Speed RS232 Transceivers
8
Copyright 2000 Sipex Corporation
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
+
+
+
+
–
–
–
–
SHUTDOWN MODE
The
SP200
,
SP205
,
SP205B
,
SP206
,
SP206B
,
SP207B
,
SP211
,
SP211B
and
SP213
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–pow-
ered systems. In the “shutdown” mode the re-
ceivers 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 WakeUp function can
enable or disable the receivers during shutdown.
For complete shutdown to occur and the 10
μ
A
power drain to be realized, the following condi-
tions must be met:
SP200
,
SP205/B
,
SP206/B
,
SP207B
and
SP211/B
:
+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
SP213
:
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
WAKEUP FUNCTION
The
SP205B
,
SP206B
,
SP207B
,
SP211B
and
SP213
have a wake–up feature that keeps two or
more receivers in an enabled state when the
device is in the shutdown mode. The
SP213
has
two receivers active (R
and R
), while the
SP205B
,
SP207B
and
SP211B
have all receiv-
ers active during shutdown. With only the re-
ceivers active during shutdown, the devices
draw 5–10
μ
A of supply current.
ENABLE
The
SP205/B
,
SP206/B
,
SP207/B
,
SP211
and
SP213
all feature an enable input, which allows
the receiver outputs to be either tri–stated or
enabled. This can be especially useful when the
receiver is tied directly to a microprocessor data
bus. For the
SP205/B
,
SP206/B
,
SP207/B
and
SP211
, enable is active low; that is, 0V applied
to the ENABLE pin will enable the receiver
outputs. For the
SP213
, enable is active high;
that is, +5V applied to the ENABLE pin will
enable the receiver outputs.
SP213 Only
SD
1
1
0
0
Power
Up/Down
Up
Up
Down
Down
Receiver
Outputs
Enable
Tri–state
Enable
Tri–state
SD
0
0
1
1
EN
0
1
0
1
EN
1
0
1
0
Table 2. Wake–Up Truth Table
相關PDF資料 |
PDF描述 |
|---|---|
| SP208EHET | High Speed 5V High Performance RS232 Transceivers |
| SP208ECA | +5V High Performance RS232 Transceivers |
| SP208ECP | +5V High Performance RS232 Transceivers |
| SP208ECT | +5V High Performance RS232 Transceivers |
| SP208EEP | +5V High Performance RS232 Transceivers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SP208EHEP-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP208EHET | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Speed +5V High Performance RS232 Transceivers |
| SP208EHET-L | 功能描述:RS-232接口集成電路 460KBPS 5V 4DRV/4RCV RS-232 -40-85C RoHS:否 制造商:Exar 數據速率: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 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| SP208EHET-L/TR | 功能描述:RS-232接口集成電路 460KBPS 5V 4DRV/4RCV RS-232 -40-85C RoHS:否 制造商:Exar 數據速率: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 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| SP208EP | 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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