- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10218 > SP211CT-L/TR (Exar Corporation)IC TXRX RS232 SERIAL 28WSOIC PDF資料下載
參數(shù)資料
| 型號： | SP211CT-L/TR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS232 SERIAL 28WSOIC |
| 標準包裝： | 1,500 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 4/5 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SOIC W |
| 包裝： | 帶卷 (TR) |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-7000 Fax (50)668-707 www.exar.com SP206, 207, 208, 2_0_060
6
DESCRIPTION
RECEIVERS
The receivers convert RS-232 input signals to
inverted TTL signals. Since the input is usu-
ally from a transmission line where long cable
length and system interference can degrade
the signal, the inputs have a typical hysteresis
margin of 500mV. This ensures that the re-
ceiver is virtually immune to noisy transmission
lines. Should an input be left unconnected, an
internal 5kohm pull-down resistor to ground will
commit the output of the receiver to a HIGH
state.
SHUTDOWN MODE
The SP206 and SP2 feature a control input
(SD) which will disable the device and reduce
the power supply current to less than 0A,
making the parts ideal for battery-powered sys-
tems. In the "shutdown" mode the receivers
and transmitters will both be tri-stated. The V+
output of the charge pump will discharge to Vcc
and the V- output will discharge to ground.
ENAblE (EN)
The SP206 and SP2 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. The enable pin is
active high.
Figure . Charge Pump Waveforms
+0V
-0V
GND
a) C2+
b) C2+
VCC = +5V
–5V
+5V
VSS Storage Capacitor
VDD Storage Capacitor
C1
C2
C3
C4
+
–
Figure 2, Charge pump - Phase
TRANSMITTER/DRIVER
The drivers are inverting transmitters, which ac-
cept either TTL or CMOS inputs and output the
RS-232 output signals with an inverted sense
relative to the input logic levels. Typically, the
RS-232 output voltage swing is +/-9V with no
load, and +/-5V minimum with full load. The
transmitter outputs are protected against infi-
nite short-circuits to ground without degrada-
tion in reliability. The drivers of the SP206 and
SP2 can be tri-stated by using the SHUT-
DOWN function.
In the "power off" state, the output impedance
will remain greater than 300 Ohms, again satis-
fying the RS-232 specifications. Should the input
of the driver be left open, an internal 400kOhm
pull-up resistor to Vcc forces the input high, thus
committing the output to a low state. The slew
rate of the transmitter output is internally limited
to a maximum of 30V/s in order to meet he EIA
standards (EIA RS-232D 2,,7, Paragraph 5).
The transition of the loaded output from high to
low also meets the monotonicity requirements
of the standard.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP3238ECA-L/TR | IC TXRX RS232 INTELLIGENT 28SSOP |
| SP3243EUCR-L/TR | IC TXRX RS232 INTELLIGENT 32QFN |
| EN3C10F26SX | CONN PLUG 10POS FEMALE CORD #26 |
| EN3C10F26X | CONN PLUG 10POS FEMALE CORD #26 |
| VI-2N0-IW-S | CONVERTER MOD DC/DC 5V 100W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP211E | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:+5V High Performance RS232 Transceivers |
| SP211EA | 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 |
| SP211EA/TR | 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 |
| SP211EA-L | 功能描述:RS-232接口集成電路 5V 4-DRVR/5-RCVR 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: |
| SP211EA-L/TR | 功能描述:RS-232接口集成電路 5V 4-DRVR/5-RCVR 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: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。