STC3485E datasheet(10/11 Pages) ETC1

No de pièce	STC3485E

Description	3.3V-Powered, 짹15kV ESD-Protected, and Slew-Rate-Limited True RS-485 Transceivers

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Fabricant	ETC1 [List of Unclassifed Manufacturers]

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Machine Model

The Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resistance. Its objective is to emulate the

stress caused when I/O pins are contacted by handling equipment during test and assembly. Of course, all pins require this protection,

not just RS-485 inputs and outputs.

Typical Applications

The STC3485E transceivers are designed for bidirectional data communications on multipoint bus transmission lines. Figures 1

shows typical network applications circuits.

To minimize reflections, the line should be terminated at both ends in its characteristic impedance, and stub lengths off the main line

should be kept as short as possible. The slew-rate-limited STC3485E is more tolerant of imperfect termination.

Figure 15a. Human Body ESD Test Model

Figure 15b. Human Body Current Waveform

Figure 16a. IEC 1000-4-2 ESD Test Model

Figure 16b. IEC 1000-4-2 ESD Generator Current Waveform

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Union Semiconductor, In...	UM3483E	307Kb / 12P	3.3V-Powered, 짹15kV ESD-Protected, and Slew-Rate-Limited True RS-485 Transceivers
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Maxim Integrated Produc...	MAX3483	467Kb / 17P	3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers Rev 0; 12/94

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STC3485E Fiches technique(PDF) 10 Page - List of Unclassifed Manufacturers

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