參數(shù)資料
型號: LTC487ISW#TRPBF
廠商: Linear Technology
文件頁數(shù): 1/12頁
文件大?。?/td> 0K
描述: IC DVR RS485 LOW PWR QUAD 16SOIC
標準包裝: 1,000
類型: 驅動器
驅動器/接收器數(shù): 4/0
規(guī)程: RS422,RS485
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.295",7.50mm 寬)
供應商設備封裝: 16-SOIC
包裝: 帶卷 (TR)
LTC487
487fc
Typical applicaTion
DescripTion
Quad Low Power
RS485 Driver
The LTC487 is a low power differential bus/line driver
designedformultipointdatatransmissionstandardRS485
applications with extended common mode range (–7V to
12V). It also meets RS422 requirements.
The CMOS design offers significant power savings over
its bipolar counterpart without sacrificing ruggedness
against overload or ESD damage.
The driver features three-state outputs, with the driver
outputs maintaining high impedance over the entire com-
mon mode range. Excessive power dissipation caused
by bus contention or faults is prevented by a thermal
shutdown circuit which forces the driver outputs into a
high impedance state.
Both AC and DC specifications are guaranteed from 0°C to
70°C (Commercial), –40°C to 85°C (Industrial) and over
the 4.75V to 5.25V supply voltage range.
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
FeaTures
applicaTions
n
Very Low Power: ICC = 110A Typ
n
Designed for RS485 or RS422 Applications
n
Single 5V Supply
n
–7V to 12V Bus Common Mode Range Permits ±7V
GND Difference Between Devices on the Bus
n
Thermal Shutdown Protection
n
Power-Up/Down Glitch-Free Driver Outputs Permit
Live Insertion/Removal of Package
n
Driver Maintains High Impedance in Three-State or
with the Power Off
n
28ns Typical Driver Propagation Delays with
5ns Skew
n
Pin Compatible with the SN75174, DS96174,
A96174, and DS96F174
n
Low Power RS485/RS422 Drivers
n
Level Translator
2
DRIVER
LTC487 TA01
RECEIVER
DI
EN 12
4
3
1
1/4 LTC487
120
RO
3
EN 12
4
2
1
1/4 LTC489
4000 FT BELDEN 9841
DATA RATE (bps)
10k
10
CABLE
LENGTH
(FT)
100
1k
10k
100k
1M
10M
LTC487 TA09
2.5M
RS485 Cable Length Specification*
*APPLIES FOR 24 GAUGE, POLYETHYLENE
DIELECTRIC TWISTED PAIR
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相關代理商/技術參數(shù)
參數(shù)描述
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