Dual_transceiver_18_V_to_425_V

Published:2009/7/24 2:15:00 Author:Jessie | From:SeekIC

Figure 3-35 shows a typical application circuit for single-supply operation of the MAX218. Figure 3-36 shows the connections for operation from unregulated and regulated supplies. Figure 3-37 shows the pin descriptions. Figure 3-38 shows suggested component suppliers. This IC runs on two alkaline (NiCd or NiMH) cells to provide full EIA/TIA-232E and V.28/V.24 communications interface. True RS-232 and EIA/TIA-562 voltage levels are maintained with a wide +1.8-V to +4.25-V operating range. A shutdown mode reduces current to 1μA. The receivers can be enabled or disabled under logic control. Figure 3-39 shows the shutdown and enable/disable mode logic. The data rate is guaranteed at 120 kbps. MAXIM NEW RELEASES DATA BOOK, 1995, P. 2-79, 2-80, 2-81, 2-82.



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