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參數(shù)資料
| 型號： | SP3203 |
| 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)： | 9/14頁 |
| 文件大?。?/td> | 121K |
| 代理商： | SP3203 |
9
Rev. 6/25/03
SP3203
Copyright 2003 Sipex Corporation
duces –V
CC
in the negative terminal of C
1
, which
is applied to the negative side of capacitor C
2
.
Since C
2+
is at V
CC
, the voltage potential across
C
2
is 2 times V
CC
.
V
DD
Transfer-Phase 4 (Figure 16)
The fourth phase of the clock connects the nega-
tive terminal of C
2
to GND, and transfers this
positive generated voltage across C
2
to C
4
, the
V
DD
storage capacitor. This voltage is regulated
to +5.5V. At this voltage, the internal oscillator
is disabled. Simultaneous with the transfer of the
voltage to C
4
, positive side of capacitor C
1
is
switched to V
CC
and the negative side is con-
nected to GND, allowing the charge pump cycle
to begin again. The charge pump cycle will
continue as long as the operational conditions for
the internal oscillator are present.
Since both V
+
and V
–
are separately generated
from V
CC
, in a no–load condition, V
+
and V
–
will
be symmetrical. Older charge pump approaches
that generate V
–
from V
+
will show a decrease in
the magnitude of V
–
compared to V
+
due to the
inherent ineffiencies in the design.
The clock rate for the charge pump is typically
operates at 250kHz. The external capacitors are
usually 0.1
μ
F with a 16V breakdown voltage
rating.
V
L
Supply Level
Current RS-232 serial tranceivers are designed
with fixed 5V or 3.3V TTL input/output voltages
levels. The V
L
function in the SP3203 allows the
end user to set the TTL input/output voltage
levels independent of V
CC
. By connecting V
L
to
the main logic bus of system, the TTL input/
output limits and threshold are reset to interface
with the on board low voltage logic circuity.
:
a
T
n
o
e
S
r
o
t
a
p
a
C
V
C
C
)
V
(
(
1
C
μ
)
F
(
C
-
C
μ
)
F
6
o
0
1
1
5
o
5
7
4
0
3
3
5
o
0
2
2
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP3203CY | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP3203E | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP3203ECY | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP3203EEY | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP320 | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP-320-3.3 | 功能描述:線性和開關(guān)式電源 3.3V 60A 320W Active PFC Function RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:Rack 長度: 寬度: 高度: |
| SP-320-36 | 功能描述:線性和開關(guān)式電源 316.8W 36V 8.8A W/PFC Function RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:Rack 長度: 寬度: 高度: |
| SP32036L | 制造商:MAG-LITE 功能描述: |
| SP3203CY | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:3V RS-232 Serial Transceiver with Logic Selector |
| SP3203E | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:3V RS-232 Serial Transceiver with Logic Selector and15kV ESD Protection |
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