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參數(shù)資料
| 型號： | LT1785 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 60V Fault Protected Half-Duplex,RS485/RS422 Transceivers(60V,故障保護,半雙工RS485/RS422收發(fā)器) |
| 中文描述： | 60V的故障保護半雙工，RS485/RS422收發(fā)器（60V的故障保護，半雙工RS485/RS422收發(fā)器） |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 200K |
| 代理商： | LT1785 |
1
LT1785/LT1785A
LT1791/LT1791A
60V Fault Protected
RS485/RS422 Transceivers
Normal Operation Waveforms at 250kBaud
GND1
GND2
R
TERM
1785/91 TA01
RO1
RE1
DE1
DI1
LT1785
RO2
RE2
DE2
DI2
LT1785
V
CC1
V
CC2
R
TERM
TX
TX
RX
RX
DESCRIPTIOU
The LT
1785/LT1791 are half-duplex and full-duplex dif-
ferential bus transceivers for RS485 and RS422 applica-
tions which feature on-chip protection from overvoltage
faults on the data transmission lines. Receiver input and
driver output pins can withstand voltage faults up to
±
60V
with respect to ground with no damage to the device.
Faults may occur while the transceiver is active, shut down
or powered off.
Data rates to 250kbaud on networks of up to 128 nodes are
supported. Controlled slew rates on the driver outputs
control EMI emissions and improve data transmission
integrity on improperly terminated lines. Drivers are speci-
fied to operate with inexpensive cables as low as 72
characteristic impedance.
The LT1785A/LT1791A devices have “fail-safe” receiver
inputs to guarantee a receiver output high for shorted,
open or inactive data lines. On-chip ESD protection elimi-
nates need for external protection devices.
The LT1785/LT1785A are available in 8-lead DIP and SO
packages and the LT1791/LT1791A in 14-lead DIP and SO
packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Protected from Overvoltage Line Faults to
±
60V
I
Pin Compatible with LTC485 and LTC491
I
High Input Impedance Supports Up to 128 Nodes
I
No Damage or Latchup to ESD
IEC-1000-4-2 Level 4:
±
15kV Air Discharge
IEC-1000-4-2 Level 2:
±
4kV Contact Discharge
I
Controlled Slew Rates for EMI Emissions Control
I
Guaranteed High Receiver Output State for Floating,
Shorted or Inactive Inputs
I
Outputs Assume a High Impedance When Off or
Powered Down
I
Drives Low Cost, Low Impedance Cables
I
Short-Circuit Protection on All Outputs
I
Thermal Shutdown Protection
APPLICATIU
I
Industrial Control Data Networks
I
CAN Bus Applications
I
HVAC Controls
1785/91 TA02
FEATURES
TYPICAL APPLICATIO
U
RO
Y-Z
DI
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1785_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:60V Fault Protected RS485/RS422 Transceivers |
| LT1785A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:60V Fault Protected RS485/RS422 Transceivers |
| LT1785AC | 制造商:LINER 制造商全稱:Linear Technology 功能描述:60V Fault Protected RS485/RS422 Transceivers |
| LT1785ACN8 | 功能描述:IC TXRX 60V RS485/RS422 8DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/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 |
| LT1785ACN8#PBF | 功能描述:IC TXRX 60V RS485/RS422 8DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/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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