ZT490E ETC1 [List of Unclassifed Manufacturers], ZT490E Datasheet
ZT490E
Available stocks
Related parts for ZT490E
ZT490E Summary of contents
Page 1
... Yes Yes Yes 32 Yes Yes No 32 Yes Yes Yes Yes 1 ZT483E, ZT485E, ZT488E ZT489E, ZT490E, ZT491E ZT483E/ZT485E ESD Pin-to-Pin Tx/Rx Number on Cross Enable of Pins Tx/Rx Reference MAX483E Yes ± 15kV 8 MAX485E Yes ± 15kV 8 No ± 15kV 8 MAX488E Yes ± ...
Page 2
Zywyn Corporation Absolute Maximum Ratings These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications is not implied. Exposure to absolute maximum rating ...
Page 3
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 ...
Page 4
... Refers to figure 54Ω 50pF. Refers to figure PHL = 54Ω 50pF, ZT485E. Refers to figure 4. DIFF L = 54Ω 50pF, ZT490E and ZT491E, refer fig.4. DIFF L = 50pF 110Ω. Refers to figure 50pF 110Ω. Refers to figure 50pF 110Ω. Refers to figure 5. ...
Page 5
Zywyn Corporation AC Electrical Characteristics (ZT483E, ZT488E, and ZT489E) Unless otherwise stated +5.0V Parameter Condition Transmitter Timing Transmitter Propagation t R PLH DIFF Transmitter Propagation t R PHL DIFF | | | | | t ...
Page 6
... Zywyn Corporation Pin Description Pin Numbers ZT483E/ZT485E ZT488E/ZT490E n/a n/a 6 n/a 7 n/a 8 n/a Zywyn ZT489E/ZT491E 2 2 n n/a n n ZT4xxE 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 ...
Page 7
... HIGH-IMPEDANCE state when the input is left unconnected. The ZT485E, ZT490E, and ZT491E can transmit and receive at data rates up to 10Mbps. The ZT483E, ZT488E, and ZT489E are specified for data rates up to 250kbps. ...
Page 8
... Zywyn Corporation Function Truth Table ZT483E/ZT485E DRIVER Outputs Input Enable Open Open Z ZT488E/ZT490E DRIVER Outputs Input Open ZT489E/ZT491E DRIVER Outputs Input Enable Open ...
Page 9
... 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 devices on the same common bus. Zywyn ZT488E/ZT490E 8-Pin PDIP/nSOIC Transceivers on the bus 9 ...
Page 10
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 ...
Page 11
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. ...
Page 12
Zywyn Corporation Package Information Zywyn Specifications subject to change without notice 12 ZT4xxE 8-pin PDIP 14-pin PDIP August 2004 rev.1.2 ...
Page 13
Zywyn Corporation Zywyn Specifications subject to change without notice 13 ZT4xxE 8-pin nSOIC ZYWYN CORPORATION 14-pin nSOIC August 2004 rev.1.2 ...
Page 14
... ZT489EEN -40°C to +85°C -40°C to +85°C ZT489EEP ZT490EEN -40°C to +85°C ZT490EEP -40°C to +85°C ZT491EEN -40°C to +85°C -40°C to +85°C ZT491EEP Please contact the factory for pricing, availabiliy on Tape-and-Reel, and To order for Green Packaging, the ordering part number format is ZT4xxL where "L" stands for the ...