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LTC2858HDD-1#TRPBF

Description
完全版 收发器 1/1 RS422,RS485 10-DFN(3x3)
Categorysemiconductor    The interface of IC   
File Size304KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric View All

LTC2858HDD-1#TRPBF Overview

完全版 收发器 1/1 RS422,RS485 10-DFN(3x3)

LTC2858HDD-1#TRPBF Parametric

Parameter NameAttribute value
category
MakerADI
series-
PackageTape and Reel (TR)
typetransceiver
protocolRS422,RS485
Number of drivers/receivers1/1
duplexFull Edition
data rate20Mbps
Voltage - Power supply4.5V ~ 5.5V
Operating temperature-40°C ~ 125°C
Installation typesurface mount type
Package/casing10-WFDFN exposed pad
Supplier device packaging10-DFN(3x3)
receiver lag25 mV
Basic product numberLTC2858
LTC2856-1/LTC2856-2
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
20Mbps and Slew Rate Limited
15kV RS485/RS422 Transceivers
FEATURES
n
n
n
DESCRIPTION
The
LTC
®
2856-1,
LTC2856-2, LTC2857-1, LTC2857-2,
LTC2858-1 and LTC2858-2 are low power, RS485/RS422
transceivers operating on 5V supplies at maximum data
rates of 20Mbps or 250kbps for low EMI. The receiver has
a one-eighth unit load, supporting up to 256 nodes per bus
(C, I-Grade), and a failsafe feature that guarantees a high
output state under conditions of floating or shorted inputs.
The driver maintains a high output impedance over the
entire common mode range when disabled or when the
supply is removed. Excessive power dissipation caused
by bus contention or a fault is prevented by current limit-
ing all outputs and by thermal shutdown.
Enhanced ESD protection allows these parts to withstand
±15kV (human body model) on the transceiver interface
pins without latchup or damage.
PART
NUMBER
LTC2856-1
LTC2856-2
LTC2857-1
LTC2857-2
LTC2858-1
LTC2858-2
MAX DATA
RATE (Mbps)
20
0.25
20
0.25
20
0.25
DUPLEX
Half
Half
Full
Full
Full
Full
PACKAGE
MSOP-8, DFN-8
MSOP-8, DFN-8
MSOP-8, DFN-8
MSOP-8, DFN-8
MSOP-10, DFN-10
MSOP-10, DFN-10
n
n
n
n
n
n
n
n
20Mbps or Low EMI 250kbps Maximum Data Rate
No Damage or Latchup to ESD: ±15kV HBM
High Input Impedance Supports 256 Nodes
(C, I-Grade)
Operation Up to 125°C (H-Grade)
Guaranteed Failsafe Receiver Operation Over the
Entire Common Mode Range
Current Limited Drivers and Thermal Shutdown
Delayed Micropower Shutdown: 5µA Maximum
(C, I-Grade)
Power Up/Down Glitch-Free Driver Outputs
Low Operating Current: 900µA Maximum in Receive
Mode
Compatible with TIA/EIA-485-A Specifications
Available in 8-Lead and 10-Lead 3mm
×
3mm DFN
and 8-Lead and 10-Lead MSOP Packages
APPLICATIONS
n
n
n
Low Power RS485/RS422 Transceiver
Level Translator
Backplane Transceiver
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of
Analog Devices, Inc. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
LTC2856-1
RO1
RE1
DE1
DI1
D
GND1
2V/DIV
R
V
CC1
R
T
LTC2858-1 at 20Mbps
DI
Y
Z
LTC2856-1
RO2
RE2
DE2
DI2
D
GND2
285678 TA01a
R
V
CC2
R
T
Y-Z
20ns/DIV
2856 TA01b
285678fg
For more information
www.linear.com/LTC2856-1
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