SN65HVD1176_08
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器件描述：PROFIBUS RS-485 TRANSCEIVERS
器件厂商：TI [
Texas Instruments]
厂商主页：http://www.ti.com/
文件大小：629KB
文件页数：19
PDF阅读：SN65HVD1176_08.pdf (点击阅读器件资料)
摘要：
1 FEATURES APPLICATIONS
DESCRIPTION
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DPACKAGE
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LOGICDIAGRAM(POSITIVELOGIC)
SN65HVD1176
SN75HVD1176
SLLS563D – JULY 2003 – REVISED DECEMBER 2007www.ti.com
PROFIBUS RS-485 TRANSCEIVERS
? Process Automation? Optimized for PROFIBUS Networks
– Chemical Production– Signaling Rates Up to 40 Mbps
– Brewing and Distillation– Differential Output Exceeds 2.1 V
– Paper Mills(54 ? Load)
? Factory Automation– Low Bus Capacitance of 10 pF (Max)
– Automobile Production? Meets the Requirements of TIA/EIA-485-A
– Rolling, Pressing, Stamping Machines? ESD Protection Exceeds ± 10 kV HBM
– Networked Sensors? Failsafe Receiver for Bus Open, Short, Idle
? General RS-485 Networks? Up to 160 Transceivers on a Bus
– Motor/Motion Control? Low Skew During Output Transitions and
– HVAC and Building Automation NetworksDriver Enabling / Disabling
– Networked Security Stations? Common-Mode Rejection Up to 50 MHz
? Short-Circuit Current Limit
? Hot Swap Capable
? Thermal Shutdown Protection
These devices are half-duplex differential transceivers, with characteristics optimized for use in PROFIBUS (EN
50170) applications. The driver output differential voltage exceeds the Profibus requirements of 2.1 V with a 54 ?
load. A signaling rate of up to 40 Mbps allows technology growth to high data transfer speeds. The low bus
capacitance provides low signal distortion.
The SN65HVD1176 and SN75HVD1176 meet or exceed the requirements of ANSI standard TIA/EIA-485-A
(RS-485) for differential data transmission across twisted-pair networks. The driver outputs and receiver inputs
are tied together to form a half-duplex bus port, with one-fifth unit load, allowing up to 160 nodes on a single bus.
The receiver output stays at logic high when the bus lines are shorted, left open, or when no driver is active. The
driver outputs are in high impedance when the supply voltage is below 2.5 V to prevent bus disturbance during
power cycling or during live insertion to the bus. An internal current limit protects the transceiver bus pins in
short-circuit fault conditions by limiting the output current to a constant value. Thermal shutdown circuitry protects
the device against damage due to excessive power dissipation caused by faulty loading and drive conditions.
The SN75HVD1176 is characterized for operation at temperatures from 0 ° C to 70 ° C. The SN65HVD1176 is
characterized for operation at temperatures from -40 ° C to 85 ° C.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Copyright ? 2003 – 2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
