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參數(shù)資料
| 型號： | SP3491 |
| 英文描述： | 3.3V Low Power Full Duplex RS-485 Transceivers with 10Mbps Data Rate(3.3V,低功耗，全雙工RS-485收發(fā)器（數(shù)據(jù)傳輸率10Mbps）) |
| 中文描述： | 3.3V低功耗全雙工RS - 485接口與高達10Mbps的數(shù)據(jù)速率（3.3，低功耗，全雙工RS - 485接口收發(fā)器（數(shù)據(jù)傳輸率高達10Mbps）收發(fā)器） |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 141K |
| 代理商： | SP3491 |
SP3490/3491DS/23 SP3490/3491 Low Power Full-Duplex RS485 Transceivers Copyright 1997 Sipex Corporation
8
DESCRIPTION
The
SP3490
and the
SP3491
are two members
in the family of +3.3V low power full duplex
transceivers that meet the electrical specifications
of the RS-485 and RS-422 serial protocols.
These devices are pin-to-pin compatible with
the
Sipex
SP490
and the
SP491
devices as well
as popular industry standards. The
SP3490
and
the
SP3491
feature
Sipex's
BiCMOS process
allowing low power operation without sacrificing
performance.
Driver
The drivers for both the
SP3490
and
SP3491
have differential outputs. The typical voltage
output swing with no load will be 0 volts to V
With a load of 54
across the differential
outputs, the driver maintains greater than 1.5V
voltage levels.
The driver of the
SP3491
has a driver enable
control line which is active high. A logic high on
DE (pin 4) of the
SP3491
will enable the differ-
ential driver outputs. A logic low on DE (pin 4)
of the
SP3491
will tri-state the driver outputs.
The
SP3490
does not have a driver enable.
Receiver
The receivers for the
SP3490
and
SP3491
have
differential inputs with an input sensitivity
as low as
±
100mV. Input impedance of the
receivers is typically 15k
(12k
minimum).
A wide common mode range of -7V to +12V
allows for large ground potential differences
between systems. The receivers for both the
SP3490
and
SP3491
are equipped with a
fail-safe feature that guarantees the receiver
output will be in a high state when the input
is left unconnected.
The receiver of the
SP3491
has a receiver enable
control line which is active low. A logic low on
REB (pin 3) of the
SP3491
will enable the
differential receiver. A logic high on REB
(pin 3) of the
SP3491
will tri-state the receiver.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP3493 | 3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers(3.3V,低功耗，轉(zhuǎn)換速率限制，全雙工RS-485/RS-422收發(fā)器) |
| SP3494 | +3.3V Low Power RS-485/RS-422 Transceivers |
| SP3494CN | +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers |
| SP3494CP | +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers |
| SP3494EN | +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP3491CN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:+3.3V Low Power Full Duplex RS-485 Transceivers with 10Mbps Data Rate |
| SP3491CN-L | 功能描述:RS-485接口IC RS485 10000 kbp 3.3V temp 0C to 70C RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| SP3491CN-L | 制造商:Exar Corporation 功能描述:IC RS485 TRANSCEIVER 10MBPS 3.6V NSOIC14 |
| SP3491CN-L/TR | 功能描述:RS-485接口IC 3.3V LoPwr Full-Dup RS485w/10Mbps Data RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| SP3491CP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:+3.3V Low Power Full Duplex RS-485 Transceivers with 10Mbps Data Rate |
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