EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC2870CUFD#PBF

Description
IC TXRX 2/2 MULTIPRTCL 28QFN
Categorysemiconductor    Analog mixed-signal IC   
File Size1MB,42 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC2870CUFD#PBF Overview

IC TXRX 2/2 MULTIPRTCL 28QFN

LTC2870CUFD#PBF Parametric

Parameter NameAttribute value
typetransceiver
protocolmulti-protocol
Number of drivers/receivers2/2
duplexComplete
receiver lag130mV
data rate20Mbps
Voltage - Power3 V ~ 5.5 V
Operating temperature0°C ~ 70°C
Installation typesurface mount
Package/casing28-WFQFN Exposed Pad
Supplier device packaging28-QFN(4x5)
FeaTures
n
n
n
n
LTC2870/LTC2871
RS232/RS485 Multiprotocol
Transceivers with
Integrated Termination
DescripTion
The
LTC
®
2870/LTC2871
are robust pin-configurable mul-
tiprotocol transceivers, supporting RS232, RS485, and
RS422 protocols, operating on a single 3V to 5.5V supply.
The LTC2870 can be configured as two RS232 single-
ended transceivers or one RS485 differential transceiver
on shared I/O lines. The LTC2871 offers independent con-
trol of two RS232 transceivers and one RS485 transceiver,
each on dedicated I/O lines.
Pin-controlled integrated termination resistors allow
for easy interface reconfiguration, eliminating external
resistors and control relays. Half-duplex switches allow
four-wire and two-wire RS485 configurations. Loopback
mode steers the driver inputs to the receiver outputs for
diagnostic self-test.The RS485 receivers support up to
256 nodes per bus, and feature full failsafe operation for
floating, shorted or terminated inputs.
An integrated DC/DC boost converter uses a tiny
2mm × 1.6mm inductor and one capacitor, eliminating
the need for multiple supplies for driving RS232 levels.
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.
n
n
n
n
n
n
n
n
One RS485 and Two RS232 Transceivers
3V to 5.5V Supply Voltage
20Mbps RS485 and 500kbps RS232
Automatic Selection of Integrated RS485 (120Ω)
and RS232 (5kΩ)Termination Resistors
Half-/Full-Duplex RS485 Switching
High ESD: ±26kV (LTC2870), ±16kV (LTC2871)
Logic Loopback Mode
1.7V to 5.5V Logic Interface
Supports Up to 256 RS485 Nodes
RS485 Receiver Failsafe Eliminates UART Lockup
H-Grade Available for the LTC2870 (–40°C to 125°C)
Available in 28-Pin 4mm
×
5mm QFN and
TSSOP (LTC2870), and 38-Pin 5mm
×
7mm QFN
and TSSOP (LTC2871)
applicaTions
n
n
n
n
Software Selectable RS232/RS485/RS422 Interface
Point-of-Sale Terminals
Cable Repeaters
Protocol Translators
Typical applicaTions
Protocol Switching with
Automatic Termination Selection
1.7V TO V
CC
0.1µF
220nF
3V TO 5.5V
10µH
2.2µF
0.1µF
Simultaneous Protocols and
RS485 Termination Switching
1.7V TO V
CC
220nF
3V TO 5.5V
10µH
2.2µF
0.1µF
RS485 Duplex Switching
1.7V TO V
CC
220nF
3V TO 5.5V
10µH
2.2µF
V
L
485/232
DY
CAP
SW
V
CC
V
L
TE485
CAP SW
LTC2871
V
CC
V
L
CAP SW
LTC2870,
LTC2871
V
CC
LTC2870
RS232 RS485
RS485
TERMINATION
OFF ON
Y
Z
Y
120
DI
Z
A
RO
120
B
RS485
FULL HALF
DUPLEX
RO,
RA
H/F
A
B
DI,
DY
Y
Z
DZ
RA
A
B
RB
V
DD
1µF
GND
V
EE
1µF
1µF
DIN1
ROUT1
DIN2
ROUT2
V
DD
GND
DOUT1
RIN1
DOUT2
RIN2
V
EE
1µF
V
DD
1µF
GND
V
EE
1µF
28701 TA01
28701fb
For more information
www.linear.com/LTC2870
1
Laobai learns Linux--dumpe2fs
The dumpe2fs command is used to print the superblock and block group information of the "ext2/ext3" file system. Usage: dumpe2fs [-bfhixV] [-o superblock=] [-o blocksize=] device Common parameters: -b...
白丁 Linux and Android
Some questions about LM339 comparator
I would like to ask you, if the output of the LM339 comparator is connected to the positive power supply without passing through a resistor, what will the output be?...
土星雨 Analog electronics
[Shanghai Hangxin ACM32F070 development board + touch function evaluation board] 02. Familiar with touch button configuration, debugging and experience sharing
ACM32F070 series MCU supports 16 channels of touch key function, channel compensation, scan clock expansion, channel shielding, self-capacitance detection range is between 5~50pF, and the sensitivity ...
xld0932 Domestic Chip Exchange
What is the current name of MSP4301211?
What is the current name of MSP4301211?...
chylong Microcontroller MCU
TI show + take a photo of Ti
I was thinking about this activity. I was busy before the New Year. I just remembered it this weekend and took some pictures of the boards at hand. After all, I am a non-hardcore fan of TI...DSP devel...
sjtitr Microcontroller MCU
stm8 pwm
[color=#000][backcolor=rgb(252, 254, 252)][font=微软雅黑][size=15px][b]I have a stm8L development board with the STM8L152k4 chip. How can I configure it so that TIM1 can output pwm to control the brightne...
suzhiqiang168 stm32/stm8

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 682  1927  354  906  1798  14  39  8  19  37 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号