Datasheet MAX220-MAX249 (Maxim) - 8

MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers
Absolute Maximum Ratings—MAX225/MAX244–MAX249
(Voltages referenced to GND.) Continuous Power Dissipation (TA = +70°C) Supply Voltage (VCC) ...-0.3V to +6V 28-Pin Wide SO (derate 12.50mW/°C above +70°C) ...1W Input Voltages 40-Pin Plastic DIP (derate 11.11mW/°C above +70°C) ...611mW TIN‚ ENA, ENB, ENR, ENT, ENRA, 44-Pin PLCC (derate 13.33mW/°C above +70°C) ...1.07W ENRB, ENTA, ENTB..-0.3V to (VCC + 0.3V) Operating Temperature Ranges RIN ...±25V MAX225C_ _, MAX24_C_ _ ..0°C to +70°C TOUT (Note 6)..±15V MAX225E_ _, MAX24_E_ _ ...-40°C to +85°C ROUT..-0.3V to (VCC + 0.3V) Storage Temperature Range ...-65°C to +160°C Short Circuit Duration (one output at a time) Lead Temperature (soldering,10s)) ...+300°C TOUT to GND ...Continuous Soldering Temperature (reflow) ROUT to GND...Continuous 40 PDIP (P40M-2) ..+225°C All other lead(Pb)-free packages...+260°C All other packages containing lead(Pb) ..+240°C
Note 6:
Input voltage measured with transmitter output in a high-impedance state, shutdown, or VCC = 0V. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics—MAX225/MAX244–MAX249
(MAX225, VCC = +5.0V ±5%; MAX244–MAX249, VCC = +5.0V ±10%, external capacitors C1–C4 = 1µF; TA = TMIN to TMAX; unless otherwise noted.) (Note 7)
PARAMETER CONDITIONS MIN TYP MAX UNITS RS-232 TRANSMITTERS
Input Logic-Low Voltage 1.4 0.8 V Input Logic-High Voltage 2 1.4 V Normal operation 10 50 Logic Pullup/lnput Current Tables 1a–1d µA Shutdown ±0.01 ±1 Data Rate Tables 1a–1d, normal operation 120 64 kbps Output Voltage Swing All transmitter outputs loaded with 3kΩ to GND ±5 ±7.5 V VENA, VENB, VENT, VENTA, ±0.01 ±25 VENTB = VCC, VOUT = ±15V Output Leakage Current (Shutdown) Tables 1a–1d µA VCC = 0V, ±0.01 ±25 VOUT = ±15V Transmitter Output Resistance VCC = V+ = V- = 0V, VOUT = ±2V (Note 8) 300 10M Ω Output Short-Circuit Current VOUT = 0V ±7 ±30 mA
RS-232 RECEIVERS
RS-232 Input Voltage Operating Range ±25 V RS-232 Input Logic-Low Voltage VCC = +5V 0.8 1.3 V RS-232 Input Logic-High Voltage VCC = +5V 1.8 2.4 V RS-232 Input Hysteresis VCC = +5V 0.2 0.5 1.0 V RS-232 Input Resistance 3 5 7 kΩ TTL/CMOS Output Voltage Low IOUT = 3.2mA 0.2 0.4 V TTL/CMOS Output Voltage High IOUT = -1.0mA 3.5 VCC - 0.2 V Sourcing VOUT = VGND -2 -10 TTL/CMOS Output Short-Circuit Current mA Sinking VOUT = VCC 10 30 Normal operation, outputs disabled, TTL/CMOS Output Leakage Current ±0.05 ±0.10 µA Tables 1a–1d, 0V ≤ VOUT ≤ VCC, VENR_ = VCC www.maximintegrated.com Maxim Integrated | 8