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參數(shù)資料
| 型號(hào)： | SP310AET |
| 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)： | 4/8頁 |
| 文件大?。?/td> | 126K |
| 代理商： | SP310AET |
SP231ADS/01
SP231A Enhanced RS-232 Line Drivers/Receivers
4
Copyright 2000 Sipex Corporation
Figure 1. Charge Pump Voltage Doubler
Figure 2. Charge Pump Voltage Inverter
S1
GND
V
CC
+
V+ = 2V
CC
+
V
CC
S2
S3
S4
C1
C3
INTERNAL
OSCILLATOR
S1
FROM
VOLTAGE DOUBLER
V+
+
V- = -(V+)
+
S2
S3
S4
C2
C4
INTERNAL
GND
GND
FEATURES…
The
Sipex SP231A
,
SP232A
and
SP233A
are
enhanced versions of the
Sipex SP231
,
SP232
and
SP233
RS-232 line drivers/receivers. They arepin-
for-pin replacements for these earlier versions, will
operate in their sockets with capacitors ranging from
0.1 to 100
μ
F, either polarized or non–polarized, and
feature several improvements in both performance
and ease of use. Performance enhancements include
10V/
μ
s slew rate, 120k bits per second guaranteed
transmission rate, and increased drive current for
longer and more flexible cable configurations. Ease of
use enhancements include smaller, 0.1
μ
F charge pump
capacitors, enhanced ESD protection, low power
dissipation and overall ruggedized construction for
commercial environments.
The
SP232A
,
SP233A, SP310A
and
SP312A
include charge pump voltage converters which allow
them to operate from a single +5V supply. These
converters convert the +5V input power to the
±
10V
needed to generate the RS-232 output levels. Both
meet all EIA RS-232D and CCITT V.28 specifica-
tions. The
SP231A
has provisions for external V+
supplies. With this power supplied externally, the
current drain due to charge pump operation is
considerably reduced, typically to 400
μ
A.
The
SP310A
provides identical features as the
SP232A
. The
SP310A
has a single control line
which simultaneously shuts down the internal DC/
DC converter and puts all transmitter and receiver
outputs into a high impedance state. The
SP312A
is identical to the
SP310A
with separate tri-state
and shutdown control lines.
The
SP231A
is available in 14-pin plastic DIP,
CERDIP and 16-pin SOIC packages for opera-
tion over commercial, industrial and military
temperature ranges. The
SP232A
is available
in 16-pin plastic DIP, SOIC and CERDIP
packages, operating over the commercial,
industrial and military temperature ranges. The
SP233A
is available in a 20-pin plastic DIP and
20–pin SOIC package for operation over the
commercial and industrial temperature ranges.
The
SP310A
and
SP312A
are available in
18-pin plastic, CERDIP and SOIC packages
for operation over the commercial and industrial
temperature ranges. Please consult the factory
for DIP and surface-mount packaged parts
supplied on tape-on-reel, as well as parts screened
to MIL-M-38510.
THEORY OF OPERATION
The
SP231A
,
SP232A,
SP233A
,
SP310A
and
SP312A
devices are made up of three basic circuit
blocks – 1) a driver/transmitter, 2) a receiver and 3)
a charge pump. Each block is described below.
Driver/Transmitter
The drivers are inverting transmitters, which
accept TTL or CMOS inputs and output the
RS-232 signals with an inverted sense relative to
the input logic levels. Typically the RS-232 output
voltage swing is
±
9V. Even under worst case
loading conditions of 3kOhms and 2500pF, the
output is guaranteed to be
±
5V, which is consistent
with the RS-232 standard specifications. The
transmitter outputs are protected against infinite
short-circuits to ground without degradation in
reliability.
The instantaneous slew rate of the transmitter
output is internally limited to a maximum of 30V/
μ
s in order to meet the standards [EIA RS-232-D
2.1.7, Paragraph (5)]. However, the transition
region slew rate of these enhanced products is
typically 10V/
μ
s. The smooth transition of the
loaded output from V
to V
clearly meets the
monotonicity requirements of the standard [EIA
RS-232-D 2.1.7, Paragraphs (1) & (2)].
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP233A | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP233ACP | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP233ACT | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP233AEP | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP233AET | 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 |
|---|---|
| SP310AET/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Enhanced RS-232 Line Drivers/Receivers |
| SP310AET-L | 功能描述:RS-232接口集成電路 5V SNGL SUPPLY 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: |
| SP310AET-L/TR | 功能描述:RS-232接口集成電路 5V SNGL SUPPLY 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: |
| SP-310-B | 制造商:Triad Magnetics 功能描述: |
| SP-310-BULK | 制造商:Triad Magnetics 功能描述:Transformer, PC Audio, Pri:0.1 Ohms;MIL-T-27E;150VDC;300Hz to 100KHz;50mW;150VDC |
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