ST485ABDR STMicroelectronics, ST485ABDR Datasheet
ST485ABDR
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ST485ABDR Summary of contents
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... Table 1. Device summary Temperature Order code range ST485ABN - °C ST485ABDR - °C August 2007 low power RS-485/RS-422 transceiver DIP-8 The ST485A is designed for bi-directional data communications or multipoint bus transmission lines. Package ...
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Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Pin configuration Figure 1. Pin configuration Table 2. Pin description Pin n° Symbol 1 RO Receiver output. If A>B by 200 mV, RO will be high; if A<B by 200 mV, RO will be low Receiver output enable. RO ...
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Truth tables Table 3. Truth table (driver) Inputs Note Don’t care High impedance Table 4. Truth table (receiver) Inputs ...
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Maximum ratings Table 5. Absolute maximum ratings Symbol V Supply voltage CC V Control input voltage (RE, DE Driver input voltage (DI Driver output voltage ( Receiver input voltage ( ...
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Electrical characteristics Table 6. DC electrical characteristics (V specified. Typical values are referred to T Symbol Parameter I V Power supply current SUPPLY CC C Input/output capacitance I/O C Driver output capacity AB Table 7. Logic input electrical characteristics ...
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Table 9. Receiver electrical characteristics (V otherwise specified. Typical values are referred to T Symbol Parameter Receiver Differential Threshold V TH Voltage ΔV Receiver Input Hysteresis TH V Receiver Output High Voltage OH V Receiver Output Low Voltage OL 3-State ...
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Table 11. Driver switching characteristics (V specified. Typical values are referred to T Symbol Parameter t PLH Propagation Delay t PHL Propagation delay skew C RPDS PLH - PHL t Output enable time PZL t Output ...
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Test circuit and typical characteristics Figure 2. Driver DC test load Figure 3. Receiver timing test load Figure 4. Driver/receiver timing test circuit 9/19 ...
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Figure 5. Driver timing test load Figure 6. Driver timing test load 10/19 ...
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Figure 7. Driver enable and disable time Figure 8. Receiver propagation delay 11/19 ...
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Figure 9. Receiver enable and disable time Figure 10. Receiver output current vs. output voltage (output low) 12/19 Figure 11. Receiver output current vs. output voltage (output high) ...
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Figure 12. Driver diff. output voltage vs common mode voltage (diff. output low) Figure 14. Driver short circuit current vs line voltage (output high) Figure 16. Receiver input current vs input voltage Figure 13. Driver diff. output voltage vs common ...
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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 on the inner ...
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Plastic DIP-8 mechanical data mm. Dim. Min. Typ. A 3.3 a1 0.7 B 1.39 B1 0.91 b 0 8.8 e 2.54 e3 7. 3.3 Z 0.44 inch. Max. Min. Typ. 0.130 ...
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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. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 1.27 ...
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Tape & reel SO-8 mechanical data mm. Dim. Min. Typ 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 inch. Max. Min. Typ. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 ...
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Revision history Table 12. Revision history Date Revision 28-Mar-2006 2 24-Aug-2007 3 18/19 Changes Order codes updated and new template. Added Table 1. in cover page. ...
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