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參數資料
| 型號： | ICL232 |
| 廠商： | Intersil Corporation |
| 英文描述： | +5V Powered, Dual RS-232 Transmitter/Receiver(正5V電源電壓、雙組RS-232收發(fā)器) |
| 中文描述： | 5V的技術，雙路RS - 232發(fā)送器/接收器（正5V的電源電壓，雙組RS - 232接口收發(fā)器） |
| 文件頁數： | 6/7頁 |
| 文件大?。?/td> | 210K |
| 代理商： | ICL232 |
6
FN3020.7
July 28, 2005
minimum of 300
with
±
2V applied to the outputs and V
CC
=
0V.
Receivers
The receiver inputs accept up to
±
30V while presenting the
required 3k
to 7k
input impedance even it the power is off
(V
CC
= 0V). The receivers have a typical input threshold of
1.3V which is within the
±
3V limits, known as the transition
region, of the RS-232 specification. The receiver output is
0V to V
CC
. The output will be low whenever the input is
greater than 2.4V and high whenever the input is floating or
driven between +0.8V and -30V. The receivers feature 0.5V
hysteresis to improve noise rejection.
Applications
The ICL232 may be used for all RS-232 data terminal and
communication links. It is particularly useful in applications
where
±
12V power supplies are not available for
conventional RS-232 interface circuits. The applications
presented represent typical interface configurations.
A simple duplex RS-232 port with CTS/RTS handshaking is
illustrated in Figure 10. Fixed output signals such as DTR
(data terminal ready) and DSRS (data signaling rate select)
is generated by driving them through a 5k
resistor
connected to V+.
In applications requiring four RS-232 inputs and outputs
(Figure 11), note that each circuit requires two charge pump
capacitors (C1 and C2) but can share common reservoir
capacitors (C3 and C4). The benefit of sharing common
reservoir capacitors is the elimination of two capacitors and
the reduction of the charge pump source impedance which
effectively increases the output swing of the transmitters.
T
OUT
V- < V
TOUT
< V+
300
400k
T
XIN
GND < T
XIN
< V
CC
V-
V+
V
CC
FIGURE 7. TRANSMITTER
R
OUT
GND < V
ROUT
< V
CC
5k
R
XIN
-30V < R
XIN
< +30V
GND
V
CC
FIGURE 8. RECEIVER
T1
IN
, T2
IN
OR
R1
IN
, R2
IN
V
OH
V
OL
t
PLH
t
PHL
Average Propagation Delay =
t
PHL +
t
PLH
2
T1
OUT
, T2
OUT
OR
R1
OUT
, R2
OUT
FIGURE 9. PROPAGATION DELAY DEFINITION
-
+
-
+
-
+
CTR (20) DATA
TERMINAL READY
DSRS (24) DATA
SIGNALING RATE
SELECT
RS-232
INPUTS AND OUTPUTS
TD (2) TRANSMIT DATA
RTS (4) REQUEST TO SEND
RD (3) RECEIVE DATA
CTS (5) CLEAR TO SEND
SIGNAL GROUND (7)
15
8
13
7
14
16
-
+
6
R2
R1
T2
T1
9
12
10
11
4
5
3
1
ICL232
C1
1
μ
F
C2
1
μ
F
TD
RTS
RD
CTS
+5V
INPUTS
OUTPUTS
TTL/CMOS
C3
1
μ
F
C4
1
μ
F
2
5k
5k
FIGURE 10. SIMPLE DUPLEX RS-232 PORT WITH CTS/RTS
HANDSHAKING
ICL232
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ICL232_05 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:+5V Powered, Dual RS-232 Transmitter/Receiver |
| ICL2322B | 制造商:Intersil Corporation 功能描述: |
| ICL232BET | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transceiver |
| ICL232CBE | 功能描述:IC 2DRVR/2RCVR RS232 5V 16-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:1,000 系列:- 類型:收發(fā)器 驅動器/接收器數:2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) |
| ICL232CBES2535 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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