参数资料
型号: LTC2861IGN#PBF
厂商: Linear Technology
文件页数: 1/18页
文件大小: 0K
描述: IC TXRX RS485 20MBPS 16-SSOP
标准包装: 100
类型: 收发器
驱动器/接收器数: 1/1
规程: RS485
电源电压: 4.5 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-SSOP
包装: 管件
产品目录页面: 1355 (CN2011-ZH PDF)
LTC2859/LTC2861
1
285961fc
20Mbps RS485 Transceivers
with Integrated Switchable
Termination
The LTC2859 and LTC2861 are low power, 20Mbps
RS485/422 transceivers operating on 5V supplies. The
receiver includes a logic-selectable 120 termination,
one-eighth unit load supporting up to 256 nodes per bus
(C-, I-grades), and a failsafe feature that guarantees a high
outputstateunderconditionsoffloatingorshortedinputs.
The driver features a logic-selectable low-EMI 250kbps
operating mode, and 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
limiting all outputs and by a thermal shutdown.
EnhancedESDprotectionallowstheLTC2859andLTC2861
towithstand±15kV(humanbodymodel)onthetransceiver
interface pins without latchup or damage.
n
Low Power RS485/RS422 Transceiver
n
Level Translator
n
Backplane Transceiver
n
Integrated, Logic-Selectable 120 Termination
Resistor
n
20Mbps Max Data Rate
n
No Damage or Latchup to ESD: ±15kV HBM
n
High Input Impedance Supports 256 Nodes
(C-, I-Grades)
n
Operation Up to 105°C (LTC2859H)
n
250kbps Low-EMI Mode
n
Guaranteed Failsafe Receiver Operation Over the
Entire Common Mode Range
n
Current Limited Drivers and Thermal Shutdown
n
Delayed Micropower Shutdown (5A Max)
n
Power Up/Down Glitch-Free Driver Outputs
n
Low Operating Current (900A Max in Receive Mode)
n
Meets All TIA/EIA-485-A Specifications
n
Available in 10-Pin 3mm
× 3mm DFN, 12-Pin
4mm
× 3mm DFN and 16-Pin SSOP Packages
LTC2859 at 20Mbps
PART NUMBER
DUPLEX
PACKAGE
LTC2859
Half
DFN-10
LTC2861
Full
SSOP-16, DFN-12
Typical applicaTion
FeaTures
applicaTions
DescripTion
proDucT selecTion GuiDe
L
, LT, LTC, LTM, Linear Technology, the Linear logo and Module are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
285961 TA02
20ns/DIV
2V/DIV
DI
Y–Z
Y
Z
RE
TE
RO
DE
DI
SLO
R
D
2859/61 TA01
LTC2859
120
RE
RO
TE
DE
DI
SLO
R
D
LTC2859
120
RE
RO
TE DE
DI SLO
R
D
LTC2859
120
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