MAX249 Maxim Multichannel RS-232 Driver/Receiver Data Sheet
Download Datasheet for Maxim Integrated Products MAX249 Multichannel RS-232 Driver/Receiver [36 pages 19-4323 Rev.9 5/00 2000 pdf/zip]
The MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where +/-12V is not available.
These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces power dissipation to less than 5uW.
The MAX249 contain four sections: dual charge-pump DC-DC voltage converters, RS-232 drivers, RS-232 receivers, and receiver and transmitter enable control inputs.
– Portable Computers
– Low-Power Modems
– Interface Translation
– Battery-Powered RS-232 Systems
– Multidrop RS-232 Networks
– Superior to Bipolar
– Operate from Single +5V Power Supply
– Meet All EIA/TIA-232E and V.28 Specifications
– Multiple Drivers and Receivers
– 3-State Driver and Receiver Outputs
ABSOLUTE MAXIMUM RATINGS
TYPICAL OPERATING CHARACTERISTICS
OUTPUT VOLTAGE vs. LOAD CURRENT
AVAILABLE OUTPUT CURRENT vs. DATA RATE
TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE AT DIFFERENT DATA RATES
TRANSMITTER SLEW RATE vs. LOAD CAPACITANCE
Figure 1. Transmitter Propagation-Delay Timing
Figure 2. Receiver Propagation-Delay Timing
Figure 3. Receiver-Output Enable and Disable Timing
Figure 4. Transmitter-Output Disable Timing
CONTROL PIN CONFIGURATIONS
Figure 5. Pin Configuration and Typical Operating Circuit
Figure 6. Pin Configurations and Typical Operating Circuit
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