st485cd STMicroelectronics, st485cd Datasheet
st485cd
Available stocks
Related parts for st485cd
st485cd Summary of contents
Page 1
... ST485CN ° C ST485BN - °C ST485XN -55 to 125 ° C ST485CD ° C ST485BD - ° C ST485CDR ° C ST485BDR - ° C ST485XDR -55 to 125 ° C March 2006 RS-485/RS-422 transceiver DIP-8 Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that placed the driver outputs into a high-impedance state ...
Page 2
Contents Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
ST485 1 Pin configuration Figure 1. Pin configuration 1.1 Pin description Table 1. Pin description Pin n° Symbol Name and function RO Receiver Output RE Receiver Output Enable DE Driver Output Enable ...
Page 4
Truth tables 2 Truth tables Table 2. Truth table (driver) Inputs Note Don’t care High impedance Table 3. Truth table (receiver) Inputs ...
Page 5
ST485 3 Maximum ratings Table 4. Absolute maximum ratings Symbol V Supply Voltage CC V Control Input Voltage (RE, DE Driver Input Voltage (DI Driver Output Voltage ( Receiver Input Voltage (A, B) ...
Page 6
Electrical characteristics 4 Electrical characteristics ± 5 25°C) A Table 5. DC Electrical characteristics Symbol Parameter Differential Driver Output V OD1 (No Load) Differential Driver Output V OD2 (With ...
Page 7
ST485 Table 5. DC Electrical characteristics Symbol Parameter No Load Supply Current I (2) CC Driver Short-Circuit I OSD1 Current, V =High O Driver Short-Circuit I OSD2 Current, V =Low O Receiver Short-Circuit I OSR Current 1. All currents into ...
Page 8
Electrical characteristics 4.2 Receiver switching characteristics ± 5 25°C) A Table 7. Receiver switching characteristics Symbol Parameter t Propagation Delay Input PLH t to Output PHL Differential Receiver t ...
Page 9
ST485 5 Test circuit and typical characteristics Figure 2. Driver DC test load Figure 4. Drive/receiver timing test circuit Test circuit and typical characteristics Figure 3. Receiver timing test load Figure 5. Driver timing test load 9/19 ...
Page 10
Test circuit and typical characteristics Figure 6. Driver propagation delay Figure 7. Driver enable and disable time 10/19 ST485 ...
Page 11
ST485 Figure 8. Receiver propagation delay Figure 9. Receiver Enable and Disable Time Test circuit and typical characteristics 11/19 ...
Page 12
Test circuit and typical characteristics Figure 10. Receiver output current vs. output low voltage Figure 12. Driver output current vs. output low voltage Figure 14. Supply current vs. temperature 12/19 Figure 11. Receiver output current vs. output high voltage Figure ...
Page 13
ST485 Figure 16. Receiver low level output voltage vs. temperature Test circuit and typical characteristics Figure 17. Differential driver output voltage vs. temperature 13/19 ...
Page 14
Package mechanical data 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and ...
Page 15
ST485 Plastic DIP-8 MECHANICAL DATA DIM. MIN 0.7 B 1. 0.44 mm. TYP MAX. MIN. 3.3 0.028 1.65 0.055 1.04 0.036 0.5 0.5 0.015 ...
Page 16
Package mechanical data DIM. MIN. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd 16/19 SO-8 MECHANICAL DATA mm. TYP MAX. MIN. 1.75 0.053 0.25 0.04 ...
Page 17
ST485 Tape & Reel SO-8 MECHANICAL DATA DIM. MIN 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 5.9 ...
Page 18
Revision history 7 Revision history Table 8. Revision history Date Revision 21-Mar-2006 12 18/19 Changes Order codes has been updated and new template. ST485 ...
Page 19
... ST485 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...