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参数资料
| 型号： | LTC2857CDD-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/RS422 8-DFN |
| 标准包装： | 121 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN-EP（3x3） |
| 包装： | 管件 |
LTC2856-1/LTC2856-2
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
1
285678ff
For more information www.linear.com/LTC2856-1
Typical applicaTion
FeaTures
applicaTions
DescripTion
20Mbps and Slew Rate
Limited 15kV RS485/RS422
Transceivers
The LTC2856-1, 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
outputstateunderconditionsoffloatingorshortedinputs.
The driver maintains a high output impedance over the
entire common mode range when disabled or when the
supplyisremoved.Excessivepowerdissipationcausedby
bus contention or a fault is prevented by current limiting
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.
n
20Mbps or Low EMI 250kbps Maximum Data Rate
n
No Damage or Latchup to ESD: ±15kV HBM
n
High Input Impedance Supports 256 Nodes
(C, I-Grade)
n
Operation Up to 125°C (H-Grade)
n
Guaranteed Failsafe Receiver Operation Over the
Entire Common Mode Range
n
Current Limited Drivers and Thermal Shutdown
n
Delayed Micropower Shutdown: 5A Maximum
(C, I-Grade)
n
Power Up/Down Glitch-Free Driver Outputs
n
Low Operating Current: 900A Maximum in Receive
Mode
n
Compatible with TIA/EIA-485-A Specifications
n
Available in 8-Lead and 10-Lead 3mm
× 3mm DFN
and 8-Lead and 10-Lead MSOP Packages
n
Low Power RS485/RS422 Transceiver
n
Level Translator
n
Backplane Transceiver
VCC1
GND1
R
RO1
RE1
DE1
DI1
D
RT
LTC2856-1
RT
285678 TA01a
VCC2
GND2
R
RO2
RE2
DE2
DI2
D
PART
NUMBER
MAX DATA
RATE (Mbps)
DUPLEX
PACKAGE
LTC2856-1
20
Half
MSOP-8, DFN-8
LTC2856-2
0.25
Half
MSOP-8, DFN-8
LTC2857-1
20
Full
MSOP-8, DFN-8
LTC2857-2
0.25
Full
MSOP-8, DFN-8
LTC2858-1
20
Full
MSOP-10, DFN-10
LTC2858-2
0.25
Full
MSOP-10, DFN-10
DI
Y
Z
Y-Z
20ns/DIV
2856 TA01b
2V
/DIV
LTC2858-1 at 20Mbps
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.
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| LTC2857CDD-2#PBF | 功能描述:IC TXRX RS485/RS422 8-DFN RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:121 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:3 V ~ 3.6 V 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-DFN（3x3） 包装:管件 |
| LTC2857CDD-2#TRPBF | 功能描述:IC TXRX RS485/RS422 8-DFN RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:121 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:3 V ~ 3.6 V 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-DFN（3x3） 包装:管件 |
| LTC2857CMS8-1#PBF | 功能描述:IC TXRX RS485/RS422 8-MSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:121 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:3 V ~ 3.6 V 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-DFN（3x3） 包装:管件 |
| LTC2857CMS8-1#TRPBF | 功能描述:IC TXRX RS485/RS422 8-MSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:121 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:3 V ~ 3.6 V 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-DFN（3x3） 包装:管件 |
| LTC2857CMS8-2#PBF | 功能描述:IC TXRX RS485/RS422 8-MSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:121 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:3 V ~ 3.6 V 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-DFN（3x3） 包装:管件 |
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