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CAN / 485 /232 bus interface TDH541S485H

CAN / 485 /232 bus interface TDH541S485H
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CAN / 485 /232 bus interface TDH541S485H - 1

• Ultra-small, ultra-thin, chip scale DFN package • Compliant with TIA/EIA-485A standard • Integrated isolated 5V power • I/O power supply range supports 3.3V and 5V microprocessors • High isolation to 3000VDC (TDH541S485H 5000VDC) • Bus-Pin ESD protection up to 15kV(HBM) • Baud rate up to 1 Mbps • >25kV/us CMTI • Low communication delay • 1/8 unit load—up to 256 nodes on a bus • Bus fail-safe • Bus driver short circuit protection • Industrial operating ambient temperature range: -40°C to +105°C • Meet AEC-Q100 standards • EN62368 approval • Moisture Sensitivity Level (MSL) 3 • Industrial Automation • Building Automation • Smart Electricity Meter • Remote Signal Interaction, Transmission TD(H)541S485H is a half-duplex enhanced transceiver designed for RS-485 data bus networks, which is fully compliant with TIA/EIA-485A standard and is suitable for data transmission of up to 1 Mbps. Their logic side supports 3.3V and 5V logic level conversion. Receivers have an exceptionally high input impedance, which places only 1/8 of the standard load on a shared bus and up to 256 transceivers. The reliability design of A and B pin is emphasized, including driver output over current protection and enhanced ESD design. The ESD protection level of A, B pin can be up to 15KV (Human Body Model). MORNSUN Guangzhou Science & Technology Co., Ltd. 2020.08.06-A/2 Page 1 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of fi

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CAN / 485 /232 bus interface TDH541S485H - 2

Pin Conne All GND2 pins are internally connected. MORNSUN Guangzhou Science & Technology Co.r Ltd. 2020.08.06-A/2 Page 2 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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CAN / 485 /232 bus interface TDH541S485H - 3

MORNSUN Guangzhou Science & Technology Co., Ltd. 2020.08.06-A/2 Page 3 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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CAN / 485 /232 bus interface TDH541S485H - 4

MORNSUN Guangzhou Science & Technology Co., Ltd. 2020.08.06-A/2 Page 4 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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CAN / 485 /232 bus interface TDH541S485H - 5

Transmission Characteristics Typical Performance Curves MORNSUN Guangzhou Science & Technology Co., Ltd. 2020.08.06-A/2 Page 5 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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CAN / 485 /232 bus interface TDH541S485H - 6

Figure 5 Receiver output high voltage VS Operating temperature Test Circuits Note:Testing the condition burden capacitance including test to stretch forward and testing fixture parasitic capacitance. Testing semaphore upswing and droop to follow＜6nS, frequency100KHz, duty50%. resistance ZO = 54Ω. Figure 6 Driver test circuit, VOD with common-mode loading Figure 7 Driver test circuit Figure 8 Drive propagation delay test circuit and wave forms Figure 9 Receiver propagation delay test circuit and wave forms MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of...

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CAN / 485 /232 bus interface TDH541S485H - 7

Detailed Description TD(H)541S485H is a semi-duplex enhanced RS485 isolated transceiver with isolated power supply. In addition to an isolated power supply, each transceiver contains a drive and a receiver. The transceiver has a standby bus failure protection function to ensure that the receiver output is high when the receiver input is open, short, or when the bus is idle. TD(H)541S485H adopts 5VDC single power supply. The whole machine can monitor the overall working state of the module and limit the output high current, so as to prevent the bus overload or short circuit from causing...

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CAN / 485 /232 bus interface TDH541S485H - 8

Figure12 Pull up and drop down resistance connect © The output of TD(H)541S485H to RXD is only compatible with 5V system, if the I/O port is 3.3V level and does not support 5V input, please refer to the following recommended circuit: 3.1x (IL + 3.1/R2) R1, R2 are resistance value, Il is system RxDor other current load. When R2 is 800Q, the table of R1value are recommended: MORNSUN Guangzhou Science & Technology Co., Ltd. 2020.08.06-A/2 Page 8 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation

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CAN / 485 /232 bus interface TDH541S485H - 9

Quadrant assignments for PIN 1 orientation in tape loooooooo-fi-Sprocket holes User Direction of Feed Pocket Quadrants Note: The product will be available after July 30th. MORNSUN Guangzhou Science & Technology Co., Ltd. Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Huangpu District, Guangzhou, P. R. China Tel: 86-20-38601850 Fax:86-20-38601272 E-mail: info@mornsun.cn www.mornsun-power.com MORNSUN Guangzhou Science & Technology Co., Ltd. 2020.08.06-A/2 Page 9 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right...

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