zt490erep ywyn Corporation, zt490erep Datasheet
zt490erep
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... ZT491ER Full 1/1 10 Zywyn Zywyn Corporation • Tel (408) 733-3225 • Fax (408) 733-3206 • Email sales@zywyn.com • www.zywyn.com ZT489ER, ZT490ER, ZT491ER General Description The ZT485ER series devices are 5V differential data line transceivers for RS485/RS422 communication that consist of one driver and one receiver with high level of ESD protection ...
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... Zywyn. Specifications are subject to change without the responsibility for any infringement of patents or other rights of third parties which may result from its use. No license or proprietary rights are granted by impli- cation or otherwise under any patent or patent rights of Zywyn Corporation. 2 ZT4xxER Specifications subject to change without notice February 2005 ...
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... Zywyn Corporation DC Electrical Characteristics Unless otherwise stated +5.0V Parameter Condition TTL Logic Input DE, DI, RE TTL Logic Output RO RS485 Input A, B RS485 Output Y, Z Power Pin GND Temp 0°C to +70°C Commercial Grade Temp –40°C to +85°C Industrial Grade ...
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... Zywyn Corporation AC Electrical Characteristics (ZT485ER, ZT490ER, and ZT491ER) Unless otherwise stated +5.0V Parameter Condition Transmitter Timing Transmitter Propagation t R PLH DIFF Transmitter Propagation t R PHL DIFF | | | | | t Transmitter Output Skew t SK PLH Transmitter Rise/Fall Time Transmitter Output Enable ...
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... Zywyn Corporation AC Electrical Characteristics (ZT487E, ZT488ER, and ZT489ER) Unless otherwise stated +5.0V Parameter Condition Transmitter Timing Transmitter Propagation t R PLH DIFF Transmitter Propagation t R PHL DIFF | | | | | t Transmitter Output Skew t SK PLH Transmitter Rise/Fall Time Transmitter Output Enable To Output HIGH, C ...
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... Zywyn Corporation Pin Description Pin Numbers ZT487E/ZT485ER ZT488ER/ZT490ER n/a n/a 6 n/a 7 n/a 8 n/a Zywyn ZT489ER/ZT491ER 2 2 n n/a n n ZT4xxER Name Description RO Receiver Output. If A>B by 200mV, then RO = HIGH; If A<B by 200mV, then RO = LOW RE Receiver Output Enable. Low active input ...
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... Zywyn Corporation Circuit Description The ZT487E, ZT485ER, ZT489ER, ZT490ER, and ZT491ER are low-power transceivers for RS-485 and RS-422 commu- nications. The RS-485 standard is ideal for multi-drop applications and for long-distance interfaces. The TIA/EIA- 485 specification allows drivers and 32 receivers to be connected to a data bus, making it an ideal choice for multi-drop applications ...
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... Zywyn Corporation Function Table ZT487E/ZT485ER DRIVER Outputs Input Enable Open Open Z ZT488ER/ZT490ER DRIVER Outputs Input Open ZT489ER/ZT491ER DRIVER Outputs Input Enable Open ...
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... Zywyn Corporation Pin Configuration ZT487E/ZT485ER 8-Pin PDIP/nSOIC Typical Application Circuits Notes: A. The bus should be terminated at both ends in its characteristic impedance Stub lengths off the main bus should be kept as short as possible. C. Can connect up to 128 devices on the same common bus. ...
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... Zywyn Corporation Typical Test Circuits Notes: A. The test load capacitance includes probe and test jig capacitance, unless otherwise specified. B. The signal generator had the following characteristics: Pulse rate = 1000 kHz, 50% duty cyle, Z Figure 1. Driver Test Circuit, V Common-Mode Loading Figure 3. Driver Common-Mode Output Voltage (V Figure 4 ...
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... Zywyn Corporation Typical Test Circuits Figure 6. Driver Enable/Disable Test Circuit and Waveforms, Low Output Figure 7. Driver Short-Circuit Test Configuration Figure 9. Receiver Propagation (t Figure 10. Receiver Output Enable/Disable Test Circuit and Waveforms, Data Output High Figure 11. Receiver Output Enable/Disable Test Circuit and Waveforms, Data Output Low Zywyn Figure 8 ...
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... Zywyn Corporation Package Information Zywyn Specifications subject to change without notice 12 ZT4xxER 8-pin PDIP 14-pin PDIP February 2005 rev.1.2 ...
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... Zywyn Corporation Zywyn Specifications subject to change without notice 13 ZT4xxER 8-pin nSOIC ZYWYN CORPORATION 14-pin nSOIC Febuary 2005 rev.1.2 ...
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... C to +85 o ZT489EREN - +85 o ZT489EREP - +85 o ZT490EREN - +85 o ZT490EREP - +85 o ZT491EREN - +85 o ZT491EREP - +85 Please contact the factory for pricing, availabiliy on Tape-and-Reel, and Zywyn Corporation Headquarters and Sales Office 1270 Oakmead Parkway, Suite 201 • Sunnyvale, CA 94085 • Tel: (408) 733-3225 • Fax: (408) 733-3206 Email: sales@zywyn.com • ...