CD3485 3.3 V, low-power, RS-485/RS-422 transceiver (half duplex, 10 Mbps, driver/receiver)-ChisynV Microelectronics (Beijing) Co., Ltd.

The CD3485 is low-power transceivers for RS-485 and RS- 422 communication. IC contains one driver and one receiver. The driver slew rates of the CD3485 is not limited, allowing them to transmit up to 10Mbps. These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers. All parts operate from a single 3.3V 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

Parameters

Iinterface Protocol:RS-422/RS-485
Supply(Min)(V):3
Supply(Max)(V):7
Receiving channel:1
send channel:1
Full duplex/half duplex:Half
Transfer rate(Max)(bps):10Mbps
ESD protection(V):15KV

Features

Low Quiescent Current: 300µA
-7V to +12V Common-Mode Input Voltage Range
Three-State Outputs
80ns Propagation Delays, 5ns Skew
Half-Duplex Versions Available
Operate from a Single 3.3V 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

Application

Industrial Control Local Area Network
Integrated Services Digital Network
Low power RS-485/RS-422 transceiver
packet switching
telecom
Transceivers suitable for EMI sensitive applications

Parameters

MALL MALL

Part Number

Package

Interface Protocol

Vs+ (Min) (V)

Vs+ (Max) (V)

Number Rx

Number Tx

Full or Half Duplex

Data Rate (Max) (bps)

ESD Protection (kV)

Temp Range(°C)

Open

CD3485AS8

CD3485是用于RS-485和RS-422通信的低功率收发器。集成电路包含一个驱动器和一个接收器。CD3485的驱动程序转换速率不受限制，允许它们传输高达10Mbps。当卸载或满载禁用驱动器时，这些收发器消耗 120µA 至 500µA 的电源电流。所有部件均采用 3.3V 单电源供电。驱动器受短路电流限制，并通过热关断电路保护其免受过度功耗的影响，该电路将驱动器输出置于高阻抗状态。接收器输入具有故障安全功能，可在输入开路时保证逻辑高输出。

Datasheet

PackageSOP-8

Interface Protocol RS-422/RS-485

Vs+ (Min) (V) 3

Vs+ (Max) (V) 7

Number Rx 1

Number Tx 1

Full or Half Duplex Half

Data Rate (Max) (bps) 10Mbps

ESD Protection (kV) 15KV

Temp Range(°C) -40 to 125

Open

Recommended

Interface RS-485 & RS-422 CD485

± 15KV ESD protection, full fault protection RS-485 transceiver

Interface RS-485 & RS-422 CD3085

5 V, low power consumption, swing rate, RS-485/RS-422 transceiver

CD3485 | CAD Modle