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参数资料
| 型号： | SP3203EEY |
| 元件分类： | 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收发器与0.1uF电容 |
| 文件页数： | 10/16页 |
| 文件大小： | 509K |
| 代理商： | SP3203EEY |
Rev.
2/7
/01
SP3203E
10
Copyright 2001 Sipex Corporation
duces –V
in the negative terminal of C
, which
is applied to the negative side of capacitor C
2
.
Since C
C
2
is 2 times V
CC
.
+
is at V
CC
, the voltage potential across
V
Transfer-Phase 4 (Figure 16)
The fourth phase of the clock connects the nega-
tive terminal of C
to GND, and transfers this
positive generated voltage across C
to C
, the
V
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
is
switched to V
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
, 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
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 SP3203E allows
the end user to set the TTL input/output voltage
levels independent of V
. 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
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| SP3220B | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP3203EEY/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3V RS-232 Serial Transceiver with Logic Selector and15kV ESD Protection |
| SP3203EEY-L | 功能描述:RS-232接口集成电路 RS232 250 kbps temp -40C to 85C RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| SP3203EEY-L | 制造商:Exar Corporation 功能描述:IC RS-232 TRANSCEIVER 5.5V TSSOP-20 制造商:Exar Corporation 功能描述:IC, RS-232 TRANSCEIVER, 5.5V, TSSOP-20 |
| SP3203EEY-L/TR | 功能描述:RS-232接口集成电路 RS232 W/ 1.8V LOGIC 3-DRVR/2-RCVR RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| SP3203EY | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:3V RS-232 Serial Transceiver with Logic Selector |
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