MAX220–MAX249 LE AVAILAB +5V-Powered, Multichannel RS-232 Drivers/Receivers General Description Next-Generation Device Features The MAX220–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 5µW.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243 16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW 16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW 18-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW 20-Pin Wide SO (derate 10.00mW/°C above +70°C)....800mW 20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW 16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW 18-Pin CERDIP (derate 10.53mW/°C above +70°C).....
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued) (VCC = +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA = TMIN to TMAX‚ unless otherwise noted.) (Note 3) PARAMETER CONDITIONS All except MAX220/MAX243, VCC = +5V, no hysteresis in shutdown RS-232 Input Hysteresis MIN TYP MAX 0.2 0.5 1.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued) (VCC = +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA = TMIN to TMAX‚ unless otherwise noted.) (Note 3) PARAMETER CONDITIONS TYP MAX MAX222/MAX232A/MAX233/ MAX242/MAX243 0.5 1 MAX220 0.6 3 t PLHR, Figure 2 MAX222/MAX232A/MAX233/ MAX242/MAX243 0.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241 (Voltages referenced to GND.) VCC ...........................................................................-0.3V to +6V V+ ................................................................(VCC - 0.3V) to +14V V- ............................................................................+0.3V to -14V Input Voltages TIN ............................................................-0.3V to (VCC + 0.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued) (MAX223/230/232/234/236/237/238/240/241, V CC = +5V ±10%; MAX233/MAX235, V CC = +5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239, VCC = +5V ±10%; V+ = +7.5V to +13.2V; TA = TMIN to TMAX; unless otherwise noted.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers __________________________________________Typical Operating Characteristics MAX223/MAX230–MAX241 TRANSMITTER OUTPUT VOLTAGE (VOH) vs. LOAD CAPACITANCE AT DIFFERENT DATA RATES 2 TRANSMITTERS LOADED 7.2 6.5 4.5 160kb/s 80kb/s 20kb/s 6.6 TA = +25°C VCC = +5V 3 TRANSMITTERS LOADED RL = 3kΩ C1–C4 = 1μF 6.4 6.2 6.0 0 5.5 5.0 500 1000 1500 2 TRANSMITTERS LOADED 9.0 8.0 7.0 3 TRANSMITTERS LOADED 4 TRANSMITTERS LOADED 6.0 5.0 4.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249 (Voltages referenced to GND.) Supply Voltage (VCC) ...............................................-0.3V to +6V Input Voltages TIN‚ ENA, ENB, ENR, ENT, ENRA, ENRB, ENTA, ENTB..................................-0.3V to (VCC + 0.3V) RIN .....................................................................................±25V TOUT (Note 6).................................................................
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued) (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 POWER SUPPLY AND CONTROL LOGIC Supply Voltage Range No load VCC Supply Current (Normal Operation) Shutdown Supply Current 3kΩ loads on all outputs MAX225 4.75 5.25 MAX244–MAX249 4.5 5.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers __________________________________________Typical Operating Characteristics MAX225/MAX244–MAX249 8 V+ AND V- LOADED EXTERNAL POWER SUPPLY 1μF CAPACITORS 12 10 40kb/s DATA RATE 8 TRANSMITTERS LOADED WITH 3kΩ 8 6 4 VCC = +5V EXTERNAL CHARGE PUMP 1μF CAPACITORS 8 TRANSMITTERS DRIVING 5kΩ AND 2000pF AT 20kb/s 2 0 -2 EITHER V+ OR V- LOADED 2 3 LOAD CAPACITANCE (nF) 4 5 40kb/s 7.0 60kb/s 6.0 100kb/s V+ AND V- LOADED 200kb/s 5.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers Test Circuits/Timing Diagrams +3V 0V* 50% 50% 50% 50% INPUT +3V INPUT 0V VCC OUTPUT GND V+ 0V V- OUTPUT tPLHT tPLHR tPLHS tPHLR tPHLS tPHLT *EXCEPT FOR R2 ON THE MAX243 WHERE -3V IS USED. Figure 1. Transmitter Propagation-Delay Timing Figure 2.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers Control Pin Configuration Tables Table 1a. MAX245 Control Pin Configurations ENT ENR 0 0 Normal Operation All Active All Active 0 1 Normal Operation All Active All High-Z 1 0 Shutdown All High-Z All Low-Power Receive Mode 1 1 Shutdown All High-Z All High-Z OPERATION STATUS TRANSMITTERS RECEIVERS Table 1b.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers Table 1d.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers _______________Detailed Description The MAX220–MAX249 contain four sections: dual charge-pump DC-DC voltage converters, RS-232 drivers, RS-232 receivers, and receiver and transmitter enable control inputs. Dual Charge-Pump Voltage Converter The MAX220–MAX249 have two internal charge-pumps that convert +5V to ±10V (unloaded) for RS-232 driver operation.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers nominal 5kΩ values. The receivers implement Type 1 interpretation of the fault conditions of V.28 and EIA/TIA-232E. The receiver input hysteresis is typically 0.5V with a guaranteed minimum of 0.2V. This produces clear output transitions with slow-moving input signals, even with moderate amounts of noise and ringing. The receiver propagation delay is typically 600ns and is independent of input swing direction.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers Tables 1a–1d define the control states. The MAX244 has no control pins and is not included in these tables. The MAX246 has ten receivers and eight drivers with two control pins, each controlling one side of the device. A logic high at the A-side control input (ENA) causes the four A-side receivers and drivers to go into a three-state mode.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT C3 TOP VIEW C5 C1+ 1 + V+ 2 C2+ 4 C2- 5 C1 15 GND C1- 3 14 T1OUT MAX220 MAX232 MAX232A V- 6 C2 13 R1IN +5V 400kΩ 11 T1IN 12 R1OUT 11 T1IN T2OUT 7 TTL/CMOS INPUTS 10 T2IN 9 R2IN 8 16 VCC C1+ +5V TO +10V 3 C1VOLTAGE DOUBLER 4 C2+ +10V TO -10V 5 C2- VOLTAGE INVERTER 1 16 VCC R2OUT DIP/SO V- 6 -10V C4 T1OUT 14 +5V RS-232 OUTPUTS 400kΩ 10 T2IN T2OUT 7 12 R1OUT R1IN 13 TTL/CMOS OUTPUTS CAPACITANCE (μF) DE
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 0.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT TOP VIEW 1.0μF 12 11 VCC +5V TO +10V VOLTAGE DOUBLER C1+ 1.0μF 14 C115 C2+ 1.0μF 16 C2- 1.0μF V+ +10V TO -10V VOLTAGE INVERTER V- 13 17 1.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT 1.0μF TOP VIEW 1.0μF T3OUT + 20 T4OUT 1 T1OUT 2 19 T5IN T2OUT 3 18 N.C. T2IN 4 T1IN 5 1.0μF 11 +10V TO -10V C2+ 12 C2- VOLTAGE INVERTER 15 T4IN VCC 7 14 T3IN C1+ 8 13 V- V+ 9 12 C2- C1- 10 11 C2+ 13 V- 1.0μF 400kΩ 5 T1IN T1OUT 2 T1 +5V 16 T5OUT GND 6 1.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT 1.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT TOP VIEW 1.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers TOP VIEW +5V INPUT 1.0μF 9 10 1.0μF 12 13 1.0μF 1.0μF VCC +5V TO +10V VOLTAGE DOUBLER C1+ C1- V+ C2+ V- +10V TO -10V VOLTAGE INVERTER 14 C2- 11 15 1.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers TOP VIEW +5V INPUT 1.0μF 10 1.0μF 12 13 1.0μF 14 1.0μF 9 VCC +5V TO +10V VOLTAGE DOUBLER C1+ C1C2+ V+ V- +10V TO -10V VOLTAGE INVERTER C2- 11 15 1.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers TOP VIEW +5V INPUT 1.0μF 1.0μF 9 10 1.0μF 12 13 1.0μF 14 VCC +5V TO +10V VOLTAGE DOUBLER C1+ C1- V+ C2+ V- +10V TO -10V VOLTAGE INVERTER C2- 11 15 1.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers TOP VIEW +7.5V TO +13.2V INPUT +5V INPUT 1.0μF 4 6 1.0μF 7 5 VCC C1+ V+ V- +10V TO -10V VOLTAGE INVERTER C1- 8 1.0μF +5V 400kΩ 24 T1IN R1OUT 1 + T1 T1OUT 19 T2OUT 20 T3OUT 13 +5V 24 T1IN 400kΩ R1IN 2 23 T2IN GND 3 22 R2OUT 23 T2IN MAX239 T2 +5V 21 R2IN VCC 4 V+ 5 TTL/CMOS INPUTS RS-232 OUTPUTS 400kΩ 20 T2OUT 16 T3IN C+ 6 19 T1OUT C- 7 18 R3IN V- 8 17 R3OUT R5IN 9 16 T3IN R5OUT 10 15 N.C.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT 1.0μF TOP VIEW 25 19 VCC +5V TO +10V VOLTAGE DOUBLER C1+ 1.0μF 27 C128 C2+ 1.0μF 29 C2- 1.0μF V+ +5V TO -10V VOLTAGE INVERTER V- 26 30 1.0μF +5V 400kΩ 15 T1IN +5V T1 N.C. R2IN N.C. T2OUT T1OUT T3OUT T4OUT R3IN R3OUT T5IN N.C. 11 10 9 8 7 6 5 4 3 2 1 TTL/CMOS INPUTS 12 13 14 15 16 17 18 19 20 21 22 MAX240 44 43 42 41 40 39 38 37 36 35 34 N.C. SHDN EN T5OUT R4IN R4OUT T4IN T3IN R5OUT R5IN N.C.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V INPUT TOP VIEW 0.1μF 1 C1+ 1 + 16 VCC 3 C14 C2+ 0.1μF 5 C2- MAX243 V- 6 11 T1IN T2OUT 7 10 T2IN 9 R2IN 8 V+ +10V TO -10V VOLTAGE INVERTER V- 2 +10V 6 -10V 0.1μF 400kΩ 13 R1IN T1OUT 14 11 T1IN 12 R1OUT C2- 5 16 VCC +5V TO +10V VOLTAGE DOUBLER +5V 14 T1OUT C1- 3 C2+ 4 0.1μF 15 GND V+ 2 C1+ 0.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 1μF 1μF 20 VCC +5V TO +10V VOLTAGE DOUBLER 1μF RB5IN TB4OUT TB3OUT TB2OUT TB1OUT TA1OUT TA2OUT TA3OUT TA4OUT RA4IN RA5IN 21 1μF 6 5 4 3 2 1 44 43 42 41 40 C1+ 23 C124 C2+ 25 C2- 26 V- 1μF +10V TO -10V VOLTAGE INVERTER 2 TA1OUT + 22 V+ +5V +5V TB1OUT 44 400kΩ RA3IN 7 39 RB4IN RA2IN 8 38 RB3IN RA1IN 9 37 RB2IN RA1OUT 10 36 RB1IN RA2OUT 11 35 RB1OUT RA3OUT 12 RA4OUT 13 33 RB3OUT RA5
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 1μF ENR 1 40 VCC + 40 VCC TA1IN 2 39 ENT TA2IN 3 38 TB1IN TA3IN 4 37 TB2IN TA4IN 5 36 TB3IN RA5OUT 6 35 TB4IN RA4OUT 7 34 RB5OUT MAX245 RA3OUT 8 33 RB4OUT RA2OUT 9 32 RB3OUT RA1OUT 10 31 RB2OUT RA1IN 11 30 RB1OUT RA2IN 12 29 RB1IN RA3IN 13 28 RB2IN RA4IN 14 27 RB3IN RA5IN 15 26 RB4IN TA1OUT 16 25 RB5IN TA2OUT 17 24 TB1OUT TA3OUT 18 23 TB2OUT TA4OUT GND
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 1μF ENA 1 TA1IN 2 + 40 VCC 39 ENB TA2IN 3 38 TB1IN TA3IN 4 37 TB2IN TA4IN 5 36 TB3IN RA5OUT 6 35 TB4IN RA4OUT 7 34 RB5OUT RA3OUT 8 33 RB4OUT RA2OUT 9 32 RB3OUT RA1OUT 10 31 RB2OUT RA1IN 11 30 RB1OUT MAX246 RA2IN 12 29 RB1IN RA3IN 13 28 RB2IN RA4IN 14 27 RB3IN RA5IN 15 26 RB4IN TA1OUT 16 25 RB5IN TA2OUT 17 24 TB1OUT TA3OUT 18 23 TB2OUT TA4OUT 19 22 TB3OU
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 1μF 40 VCC 2 39 ENTB TA2IN 3 38 TB1IN TA3IN 4 37 TB2IN ENTA 1 TA1IN 40 VCC +5V +5V 1 ENTA + TB1OUT 24 400kΩ 2 TA1IN TB1IN 38 +5V +5V TB2OUT 23 17 TA2OUT TA4IN 5 36 TB3IN RB5OUT 6 35 TB4IN RA4OUT 7 34 RB4OUT RA3OUT 8 33 RB3OUT RA2OUT 9 32 RB2OUT RA1OUT 10 31 RB1OUT ENRA 11 30 ENRB MAX247 16 TA1OUT RA1IN 12 29 RB1IN RA2IN 13 28 RB2IN RA3IN 14 27 RB3IN RA4IN 15 26
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers TOP VIEW +5V 1μF 1μF 20 TA3OUT TA2OUT TA1OUT TB1OUT RB4IN TA4OUT TA4OUT TB3OUT RA4IN TB2OUT RA3IN 21 1μF 6 5 4 3 2 1 44 43 42 41 40 1μF VCC +5V TO +10V VOLTAGE DOUBLER C1+ 23 C124 C2+ 25 C2- V- 39 RB3IN RA1IN 8 38 RB2IN ENRA 9 37 RB1IN RA1OUT 10 36 ENRB RA2OUT 11 35 RB1OUT RA3OUT 12 RA4OUT 13 33 RB3OUT TA1IN 14 32 RB4OUT MAX248 34 RB2OUT TA2IN 15 31 TB1IN TA3IN 16 30 TB2IN 29 TB3IN TB4IN E
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers +5V TOP VIEW 1μF 1μF 20 TA3OUT TA2OUT TA1OUT TB1OUT RB4IN 1μF 6 5 4 3 2 1 44 43 42 41 40 1μF RB5IN RA5IN TB3OUT RA4IN TB2OUT RA3IN 21 C1+ 23 C124 C2+ 25 C2- VCC +5V TO +10V VOLTAGE DOUBLER V- 39 RB3IN RA1IN 8 38 RB2IN ENRA 9 37 RB1IN RA1OUT 10 36 ENRB RA2OUT 11 35 RB1OUT RA3OUT 12 RA4OUT 13 33 RB3OUT RA5OUT 14 32 RB4OUT MAX249 34 RB2OUT TA1IN 15 31 RB5OUT TA2IN 16 30 TB1IN 29 TB2IN TB3IN
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ___________________________________________Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE MAX222CPN+ 0°C to +70°C 18 Plastic DIP PART MAX232AC/D TEMP RANGE 0°C to +70°C PIN-PACKAGE Dice* MAX222CWN+ 0°C to +70°C 18 Wide SO MAX232AEPE+ -40°C to +85°C 16 Plastic DIP MAX222C/D 0°C to +70°C Dice* MAX232AESE+ -40°C to +85°C 16 Narrow SO MAX222EPN+ -40°C to +85°C 18 Plastic DIP MAX232AEWE+ -40°C to +85°C 16 Wid
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers ___________________________________________Ordering Information (continued) PART MAX238ENG+ TEMP RANGE -40°C to +85°C PIN-PACKAGE 24 Narrow Plastic DIP PART MAX243CPE+ TEMP RANGE 0°C to +70°C PIN-PACKAGE 16 Plastic DIP MAX238EWG+ -40°C to +85°C 24 Wide SO MAX243CSE+ 0°C to +70°C 16 Narrow SO MAX238ERG -40°C to +85°C 24 Narrow CERDIP MAX243CWE+ 0°C to +70°C 16 Wide SO MAX238MRG -55°C to +125°C 24 Narrow CERDIP MAX243C/D 0°
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
MAX220–MAX249 +5V-Powered, Multichannel RS-232 Drivers/Receivers Revision History REVISION NUMBER REVISION DATE 15 1/06 Added part information to the lead temperature in the Absolute Maximum Ratings sections 16 7/10 Changed multiple packages to lead-free versions; updated/added notes 3, 4, 5, 7, and 8 to the Electrical Characteristics table; removed incorrect subscripting from all pin names in the Electrical Characteristics table and Pin Configurations DESCRIPTION PAGES CHANGED 2, 5, 8 1, 2–9, 17–