MAX3241E MAXIM [Maxim Integrated Products], MAX3241E Datasheet
MAX3241E
Available stocks
Related parts for MAX3241E
MAX3241E Summary of contents
Page 1
... Both the MAX3222E and MAX3232E are pin, package, and functionally compatible with the industry-standard MAX242 and MAX232, respectively. The MAX3241E is a complete serial port (three drivers/five receivers) designed for notebook and subnotebook com- puters. The MAX3237E (five drivers/three receivers) is ideal for peripheral applications that require fast data transfer. ...
Page 2
... V+ + |V-| (Note 1) .................................................................+13V Input Voltages T_IN, EN, SHDN, MBAUD to GND ........................-0.3V to +6V R_IN to GND .....................................................................±25V Output Voltages T_OUT to GND...............................................................±13.2V R_OUT, R_OUTB (MAX3241E)................-0. Short-Circuit Duration, T_OUT to GND.......................Continuous Continuous Power Dissipation (T = +70°C) A 16-Pin SSOP (derate 7.14mW/°C above +70°C) ..........571mW Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. ...
Page 3
... Receiver Skew PHL Transition-Region Slew Rate Note 2: MAX3222E/MAX3232E/MAX3241E: C1–C4 = 0.1µF tested at 3.3V ±10 0.047µF, C2–C4 = 0.33µF tested at 5.0V ±10%. MAX3237E: C1–C4 = 0.1µF, tested at 3.3V ±5%; C1–C4 = 0.22µF tested at 3.3V ±10 0.047µF, C2–C4 = 0.33µF tested at 5.0V ±10%. Note 3: The MAX3237E logic inputs have an active positive feedback resistor. The input current goes to zero when the inputs are at the supply rails ...
Page 4
ESD-Protected, Down to 10nA, 3.0V to 5.5V 1Mbps, True RS-232 Transceivers TIMING CHARACTERISTICS—MAX3237E (V = +3.0V to +5.5V, C1–C4 = 0.1µ PARAMETER R = 3kΩ MBAUD = GND V = 3.0V to 4.5V, ...
Page 5
... TRANSMITTER AT 20kbps, 120kbps, 250kbps 4 TRANSMITTERS AT 15.6kbps 10 ALL TRANSMITTERS LOADED WITH 3kΩ 2000 0 500 1000 1500 2000 LOAD CAPACITANCE (pF +25°C, unless otherwise noted MAX3241E OPERATING SUPPLY CURRENT vs. LOAD CAPACITANCE 60 1 TRANSMITTER AT 250kbps 2 TRANSMITTERS AT 15.6kbps 50 250kbps 5000 0 1000 2000 3000 ...
Page 6
... Typical Operating Characteristics (continued OUT TRANSMITTER AT 250kbps 4 TRANSMITTERS AT 15.6kbps 10 ALL TRANSMITTERS LOADED V OUT- WITH 3kΩ AND 1000pF 0 4.0 4.5 5.0 2.0 MAX3237E MAX3241E — 13 10, 11 10, 12 ...
Page 7
... MAX3237E transmitters guarantee a 1Mbps data rate into worst-case loads of 3kΩ in parallel with 1000pF. The receivers convert RS-232 signals to CMOS-logic output levels. The MAX3222E/MAX3237E/MAX3241E receivers have inverting three-state outputs. Drive EN high to place the receiver(s) into a high-impedance state. Receivers can be either active or inactive in shut- down (Table 1) ...
Page 8
... GND MINIMUM SLEW-RATE TEST CIRCUIT Figure 1. Slew-Rate Test Circuits The complementary outputs on the MAX3237E/MAX3241E (R_OUTB) are always active, regardless of the state SHDN. This allows the device to be used for ring indica- tor applications without forward biasing other devices con- nected to the receiver outputs. This is ideal for systems ...
Page 9
... UART T1IN Tx GND SHDN = GND b) NEW MAX3237E/MAX3241E: EN SHUTS DOWN RECEIVER OUTPUTS (EXCEPT FOR B OUTPUTS CURRENT FLOWS TO UART IN SHUTDOWN. B OUTPUTS INDICATE RECEIVER ACTIVITY DURING SHUTDOWN WITH EN HIGH. Figure 2. Detection of RS-232 Activity when the UART and Interface are Shut Down; Comparison of MAX3237E/ ...
Page 10
... The IEC 1000-4-2 standard covers ESD testing and per- formance of finished equipment; it does not specifically refer to integrated circuits. The MAX3222E/MAX3232E/ MAX3237E/MAX3241E help you design equipment that meets Level 4 (the highest level) of IEC 1000-4-2, without the need for additional ESD-protection components. The major difference between tests done using the ...
Page 11
... Figure 6a. MAX3241E Transmitter Output Voltage vs. Load 1.0 Current per Transmitter Figure 3 shows two transmitter outputs when recover- ing from shutdown mode. As they become active, the two transmitter outputs are shown going to opposite RS-232 levels (one transmitter input is high, the other is low). Each transmitter is loaded with 3kΩ in parallel with 2500pF ...
Page 12
... R1IN 4 5k R2IN R3IN 5k R4IN 7 5k R5IN 8 5k SHDN GND 25 Interconnection with 3V and 5V Logic The MAX3222E/MAX3232E/MAX3237E/MAX3241E can directly interface with various 5V logic families, includ- ing ACT and HCT CMOS. See Table 3 for more infor- mation on possible combinations of interconnections. MOUSE ...
Page 13
... Compatible with ACT and HCT CMOS, and with AC, HC, or Figure 8. MAX3241E Loopback Test Result at 120kbps CD4000 CMOS T1IN T1OUT V+ C3 R1OUT V- C4 Figure 9. MAX3241E Loopback Test Result at 250kbps T_ OUT R_ IN +5V 5k 1000pF 0 +5V 0 -5V +5V 0 Figure 10. MAX3237E Loopback Test Result at 1000kbps ...
Page 14
... T2IN R2OUT R2IN 9 12 N.C. N. TSSOP 1 28 C2 R1IN GND C1- R2IN 5 24 MAX3241E R3IN R4IN 7 SHDN R5IN 8 21 R1OUTB 9 20 R2OUTB T1OUT T2OUT 10 19 R1OUT T3OUT 11 18 R2OUT T3IN 12 17 R3OUT 16 R4OUT T2IN 13 ...
Page 15
ESD-Protected, Down to 10nA, 3.0V to 5.5V 1Mbps, True RS-232 Transceivers __________________________________________________Typical Operating Circuits +3. BYPASS C1 0.1µF C1- MAX3222E 5 C2 0.1µF C2- 12 T1IN TTL/CMOS INPUTS ...
Page 16
... ESD-Protected, Down to 10nA, 3.0V to 5.5V 1Mbps, True RS-232 Transceivers _____________________________________Typical Operating Circuits (continued) +3.3V C BYPASS C1+ C1 0.1µF 24 C1- 1 MAX3241E C2+ C2 0.1µF 2 C2- T1IN 14 T2IN 13 TTL/CMOS INPUTS T3IN 12 R1OUTB 21 R2OUTB 20 R1OUT 19 R2OUT 18 TTL/CMOS OUTPUTS R3OUT 17 R4OUT 16 R5OUT GND 25 16 ______________________________________________________________________________________ +3 ...
Page 17
... T = +25°C, DC parameters only. A ______________________________________________________________________________________ ___________________ Chip Information TRANSISTOR COUNTS: PIN-PACKAGE MAX3222E/MAX3232E: 1129 18 Wide SO MAX3237E: 2110 18 Plastic DIP MAX3241E: 1335 Dice* 20 TSSOP 20 SSOP 18 Wide SO 18 Plastic DIP 20 TSSOP 16 SSOP 16 Wide SO 16 Plastic DIP 20 TSSOP 16 SSOP ...
Page 18
ESD-Protected, Down to 10nA, 3.0V to 5.5V 1Mbps, True RS-232 Transceivers ________________________________________________________Package Information 18 ______________________________________________________________________________________ ...
Page 19
ESD-Protected, Down to 10nA, 3.0V to 5.5V 1Mbps, True RS-232 Transceivers ___________________________________________Package Information (continued) ______________________________________________________________________________________ 19 ...
Page 20
ESD-Protected, Down to 10nA, 3.0V to 5.5V 1Mbps, True RS-232 Transceivers Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves ...