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參數(shù)資料
| 型號(hào)： | LTC1535 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Isolated RS485 Transceiver |
| 中文描述： | 485隔離收發(fā)器 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 226K |
| 代理商： | LTC1535 |
1
LTC1535
Isolated RS485 Transceiver
August 1999
, LTC and LT are registered trademarks of Linear Technology Corporation.
Final Electrical Specifications
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
The LTC
1535 is an isolated RS485 full-duplex differential
line transceiver. Isolated RS485 is ideal for systems where
the ground loop is broken to allow for much larger com-
mon mode voltage ranges. An internal capacitive isolation
barrier provides 2500V
RMS
of isolation between the line
transceiver and the logic level interface. The powered side
contains a 400kHz push-pull converter to power the iso-
lated RS485 transceiver. Internal full-duplex communica-
tion occurs through the capacitive isolation barrier. The
transceiver meets RS485 and RS422 requirements.
The driver and receiver feature three-state outputs, with
the driver maintaining high impedance over the entire
common mode range. The drivers have short-circuit cur-
rent limits in both directions and a slow slew rate select to
minimize EMI or reflections. The 68k
receiver input
allows up to 128 node connections. A fail-safe feature
defaults to a high output state when the receiver inputs are
open or shorted.
I
Isolated RS485 Receiver/Driver
I
RS485 with Large Common Mode Voltage
I
Breaking RS485 Ground Loops
I
Multiple Unterminated Line Taps
I
UL Rated Isolated RS485: 2500V
RMS
I
Half- or Full-Duplex
I
Eliminates Ground Loops
I
350kBd Maximum Data Rate
I
Self-Powered with 400kHz Converter
I
Fail-Safe Output High for Open or
Shorted Receiver Inputs
I
Short-Circuit Current Limit
I
Slow Slew Rate Control
I
68k
Input Impedance Allows Up to 128 Nodes
I
Thermal Shutdown
I
8kV ESD Protection On Driver Outputs and Receiver
Inputs
TYPICAL APPLICATIO
U
APPLICATIU
FEATURES
DESCRIPTIO
U
**
D
Y
Z
SLO
2
1
1
R
A
B
RO2
1535 TA01
V
CC
RO
RE
DE
DI
GND
LOGIC COMMON
2
FLOATING RS485 COMMON
** TRANSFORMER
COILTRONICS (561) 241-7876
400kHz
28
27
26
25
4
17
15
16
18
12
13
14
V
CC2
11
1
+
+
GND2
1/2 BAT54C
1/2 BAT54C
ST1
ST2
3
2
V
CC
RO
RE
DE
DI
1
10
μ
F
10
μ
F
2
CTX02-14659
TWISTED-PAIR
CABLE
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| LTC1535CSW#TR | 功能描述:IC TRANSCEIVER RS485 ISO 28SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 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 包裝:管件 |
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