ADM242 AD [Analog Devices], ADM242 Datasheet
ADM242
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ADM242 Summary of contents
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... Modems Printers Instruments GENERAL DESCRIPTION The ADM222, ADM232A, ADM242 are a family of high speed RS-232 line drivers/receivers offering transmission rates up to 200 kB/s. Operating from a single +5 V power supply, a highly efficient on-chip charge pump using small (0.1 F) external capacitors allows RS-232 bipolar levels to be developed. Two RS-232 drivers and two RS-232 receivers are provided on each device ...
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... ADM222/ADM232A/ADM242–SPECIFICATIONS Parameter RS-232 TRANSMITTERS Output Voltage Swing Input Logic Threshold Low, V INL Input Logic Threshold High, V INH Logic Pullup Current Data Rate Output Resistance Output Short Circuit Current (Instantaneous) RS-232 RECEIVERS RS-232 Input Voltage Range RS-232 Input Threshold Low RS-232 Input Threshold High ...
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... Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. +3V PHLT V+ 0V V– Figure 3. Receiver Propagation Delay Timing +3.5V +0.8V –3– ADM222/ADM232A/ADM242 + PHLR t PLHR ...
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... ADM242) Active Low Digital Input. May be used to disable the device so that the power consumption is minimized. On the ADM222 all drivers and receivers are disabled. On the ADM242 the drivers are disabled but the receivers remain enabled SHDN ...
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... Figure 10. ADM232A Typical Operating Circuit REV GND OUT OUT OUT Figure 11. ADM242 DIP/SOIC Pin Configuration C3 0.1µ 0.1µF 6 V– C4 0.1µ OUT TTL/CMOS RS-232 * INPUTS OUTPUTS 7 T2 OUT TTL/CMOS RS-232 ...
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... ADM222/ADM232A/ADM242–Typical Performance Characteristics V– I+, ( I– ) – mA Figure 13. Charge Pump V+, V– vs. Current + +25° TX1 = +5V; TX2 = 0V – 5V SQUARE WAVE BOTH TX OUTPUTS LOADED WITH 3k// 1000 2000 LOAD CAPACITANCE – pF Figure 14 ...
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... On the ADM242, both receivers continue to operate normally. This function is useful for monitoring activity so that when it occurs, the device can be taken out of the shutdown mode. The ADM242 also contains a receiver enable function (EN) which can be used to fully disable the receivers, independent of SHDN. APPLICATIONS INFORMATION A selection of typical operating circuits is shown in Figures ...
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... ADM222/ADM232A/ADM242 16-Pin Plastic DIP (N-16 0.280 (7.11) PIN 1 0.240 (6.10 0.840 (21.33) 0.745 (18.93) 0.060 (1.52) 0.210 0.015 (0.38) (5.33) 0.200 (5.05) 0.125 (3.18) SEATING 0.022 (0.558) 0.100 0.070 (1.77) PLANE 0.014 (0.356) (2.54) 0.045 (1.15) BSC 16-Lead Wide SOIC (R-16W 0.299 0.419 (7.60) (10.65 0.030 (0.75) 0.413 (10.50) 0.012 (0.3) 0.104 (2.65) 0.05 (1.27) 0.019 (0.49) 0.013 REF (0 ...
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... ADM222AR – +85 C ADM232AAN – +85 C ADM232AARN – +85 C ADM232AARW – +85 C ADM242AN – +85 C ADM242AR – +85 C *For outline information see Package Information section. REV. 0 ADM222/ADM232A/ADM242 Package Option* N-18 R-18W N-16 R-16N R-16W N-18 R-18W –9– ...