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corebai芯佰微接口电路CBM485AS
FEATURES
 Low Quiescent Current: 300µA
 -7V to +12V Common-Mode Input
Voltage Range
 Three-State Outputs
 50ns Propagation Delays, 5ns Skew
 Half-Duplex Version Available
 Operate from a Single 5V Supply
 Allows up to 32 Transceivers on the Bus
 Data rate: 10 Mbps
 Current-Limiting and Thermal Shutdown
for Driver Overload Protection
 Enhanced ESD Specifications:
 ±15kV IEC61000-4-2 Air Discharge
 ±8kV IEC61000-4-2 Contact Discharge
APPLICATIONS
 Low power RS-485 systems
 DTE/DCE interface
 Packet switching
 Local area networks (LNAs)
 Data multiplexers
 Data concentration
 Integrated services digital network (ISDN)
GENERAL DESCRIPTION
The CBM485 is low-power transceivers for
RS-485 and RS-422 communication. IC
contains one driver and one receiver.
The driver slew rates of the CBM485 is not
limited, allowing them to transmit up to 10
Mbps.
These transceivers draw between 120µA
and 500µA of supply current when unloaded
or fully loaded with disabled drivers. All parts
operate from a single 5V supply. Drivers are
short-circuit current limited and are protected
against excessive power dissipation by
thermal shutdown circuitry that places the
driver outputs into a high-impedance state.
The receiver input has a fail-safe feature
that guarantees a logic-high output if the
input is open circuit. The CBM485 is designed
for half-duplex applications.

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地址:新桥街道贵达商厦4楼
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