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hot MAX3311CUB+T


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Part Number MAX3311CUB+T
Manufacturer Maxim Integrated
Description IC TXRX RS232 460KBPS 10-UMAX
Datasheet MAX3311CUB+T Datasheet
Package 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
In Stock 6400 piece(s)
Unit Price $ 1.5422 *
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MAX3311CUB+T Specifications

ManufacturerMaxim Integrated
CategoryIntegrated Circuits (ICs) - Interface - Drivers, Receivers, Transceivers
Datasheet MAX3311CUB+T Datasheet
Package10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Number of Drivers/Receivers1/1
Receiver Hysteresis500mV
Data Rate460Kbps
Voltage - Supply4.5 V ~ 5.5 V
Operating Temperature0°C ~ 70°C
Mounting TypeSurface Mount
Package / Case10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package10-uMAX

MAX3311CUB+T Datasheet

Page 1

Page 2

1 2 3 4 5 10 9 8 7 6 GND C1+ V- TOUTTIN C1- VCC MAX3311 µMAX TOP VIEW RINROUT SHDN General Description The MAX3311/MAX3313 are low-power, +5V EIA/TIA- 232-compatible transceivers. Both devices have one transmitter and one receiver. The transceivers have a proprietary low-dropout transmitter output stage enabling RS-232-compatible operation from a +5V sup- ply with a single inverting charge pump. These devices require only three 0.1µF capacitors and will run at data rates up to 460kbps while maintaining RS-232-compati- ble output levels. The MAX3311 features a 1µA shutdown mode. In shut- down the device turns off the charge pump, pulls V- to ground, and the transmitter output is disabled. The MAX3313 features an INVALID output that asserts high when an active RS-232 cable signal is connected, sig- naling to the host that a peripheral is connected to the communication port. ________________________Applications Digital Cameras PDAs GPS POS Telecommunications Handy Terminals Set-Top Boxes Features  1µA Low-Power Shutdown (MAX3311)  INVALID Output (MAX3313)  Receiver Active in Shutdown (MAX3311)  Single Transceiver (1Tx/1Rx) in 10-Pin µMAX  RS-232-Compatible Operation M A X 3 3 1 1 /M A X 3 3 1 3 460kbps, 1µA Supply Current, RS-232-Compatible Transceivers in µMAX ________________________________________________________________ Maxim Integrated Products 1 Pin Configurations 19-1901; Rev 0; 2/01 Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX3311CUB 0°C to +70°C 10 µMAX MAX3311EUB -40°C to +85°C 10 µMAX MAX3313CUB 0°C to +70°C 10 µMAX MAX3313EUB -40°C to +85°C 10 µMAX For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at Pin Configurations continued at end of data sheet. Typical Operating Circuit C1 0.1µF C2 0.1µF CBYPASS 0.1µF 9 8 1 10 7 6 3 2 4 5 C1+ V- TOUT C1- TIN RINROUT VCC GND 5kΩ SHDN (MAX3311) INVALID (MAX3313) +5V MAX3311 MAX3313 CAPACITORS MAY BE POLARIZED OR NONPOLARIZED.

Page 3

M A X 3 3 1 1 /M A X 3 3 1 3 460kbps, 1µA Supply Current, RS-232-Compatible Transceivers in µMAX 2_________________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VCC = +5V, C1 and C2 = 0.1µF, TA = TMIN to TMAX. Typical values are at TA = +25°C.) 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. VCC to GND..............................................................-0.3V to +6V V- to GND .................................................................+0.3V to -7V VCC + |V-|.............................................................................+13V Input Voltages TIN, SHDN to GND.................................................-0.3V to +6V RIN to GND........................................................................±25V Output Voltages TOUT to GND..................................................................±13.2V ROUT, INVALID to GND .......................…-0.3V to (VCC + 0.3V) Short-Circuit Duration TOUT to GND...........................................................Continuous Continuous Power Dissipation 10-Pin µMAX (derate 5.6mW/°C above +70°C) .............444mW Operating Temperature Ranges MAX331_CUB .......................................................0°C to +70°C MAX331_EUB ....................................................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX U N IT S DC CHARACTERISTICS Supply Operation Range VCC 4.5 5 5.5 V Supply Current SHDN = VCC, no load 100 250 µA Shutdown Supply Current SHDN = GND (MAX3311 only) 1 10 µA LOGIC INPUTS (TIN, SHDN) Input Logic Threshold Low VIL 0.8 V Input Logic Threshold High VIH 2.4 V Transmitter Input Hysteresis 0.5 V Input Leakage Current ±0.01 ±1 µA RECEIVER OUTPUT Output Voltage Low VOL IOUT = 1.6mA 0.4 V Output Voltage High VOH IOUT = -1.0mA VCC - 0.6 VCC - 0.1 V INVALID OUTPUT (MAX3313 ONLY) Figure 5, positive threshold 2.7 Receiver Input Threshold to INVALID Output High Figure 5, negative threshold -2.7 V Receiver Input Threshold to INVALID Output Low Figure 5 -0.3 0.3 V INVALID Output Low VOL IOUT = 1.6mA 0.4 V INVALID Output High VOH IOUT = -1.0mA VCC - 0.6 V Receiver Positive or Negative Threshold to INVALID High Figure 5 0.1 µs Receiver Positive or Negative Threshold to INVALID Low Figure 5 30 µs

Page 4

M A X 3 3 1 1 /M A X 3 3 1 3 460kbps, 1µA Supply Current, RS-232-Compatible Transceivers in µMAX _______________________________________________________________________________________ 3 Note 1: Not tested—guaranteed by design. TIMING CHARACTERISTICS (VCC = +5V, C1 and C2 = 0.1µF, TA = TMIN to TMAX. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX U N IT S Maximum Data Rate RL = 3kΩ, C L = 1000p F 460 kbps Receiver Propagation Delay tPLH, tPHL Recei ver i np ut to r ecei ver outp ut C L = 150p F 0.15 µs Transmitter Skew 100 ns Receiver Skew 50 ns Transition Region Slew Rate RL = 3kΩ to 7kΩ, CL = 150pF to 1000p F, m easur ed from +3V to - 3V or fr om - 3V to + 3V 11 V/µs ELECTRICAL CHARACTERISTICS (continued) (VCC = +5V, C1 and C2 = 0.1µF, TA = TMIN to TMAX. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX U N IT S RECEIVER INPUT Input Threshold Low VIL 0.8 V Input Threshold High VIH 2.4 V Input Hysteresis 0.5 V Input Resistance 5 kΩ TRANSMITTER OUTPUT Output Voltage Swing Transmitter output loaded with 3kΩ to ground ±3.7 V Output Resistance (Note 1) VCC = 0, transmitter output = ±2V 300 Ω Output Short-Circuit Current ±60 mA Output Leakage Current VOUT = ±12V, transmitter disabled ±25 µA

Page 5

M A X 3 3 1 1 /M A X 3 3 1 3 460kbps, 1µA Supply Current, RS-232-Compatible Transceivers in µMAX 4 _______________________________________________________________________________________ Typical Operating Characteristics (VCC = +5V, 0.1µF capacitors, transmitter loaded with 3kΩ and CL, TA = +25°C, unless otherwise noted.) 0 4 2 8 6 12 10 14 0 1000 1500500 2000 2500 3000 SLEW RATE vs. LOAD CAPACITANCE M A X 3 3 1 1 /1 3 t o c0 1 LOAD CAPACITANCE (pF) S LE W R A TE ( V /µ s) +SLEW 250 kbps DATA RATE -SLEW -5 -4 -3 -2 -1 0 1 2 3 4 5 6 0 500 1000 1500 2000 2500 3000 TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE M A X 3 3 1 1 /1 3 t o c0 2 LOAD CAPACITANCE (pF) TR A N S M IT TE R O U TP U T V O LT A G E (V ) 460kbps/250kbps/120kbps 460kbps/250kbps/120kbps 0 4 2 8 6 12 10 14 0 1000 1500500 2000 2500 3000 SUPPLY CURRENT vs. LOAD CAPACITANCE M A X 3 3 1 1 /1 3 t o c0 3 LOAD CAPACITANCE (pF) S U P P LY C U R R EN T (m A ) 20kbps 120kbps 250kbps 460kbps Pin Description PIN MAX3311 MAX3313 NAME FUNCTION 1 1 VCC +5V External Power Supply. Decouple with a 0.1µF capacitor to ground. 2 2 C1- Negative Terminal of the Voltage Inverter Charge-Pump Capacitor 3 — SHDN Shutdown Active-Low (0 = off, 1 = on) — 3 INVALID Valid Signal Detector Output, Active-Low. A logic high indicates that a valid RS-232 level is present on the receiver input. 4 4 TIN TTL/CMOS Transmitter Input 5 5 ROUT TTL/CMOS Receiver Output 6 6 RIN RS-232 Receiver Input 7 7 TOUT RS-232-Compatible Transmitter Output 8 8 V- -4.3V generated by the charge pump. Connect a 0.1µF capacitor to ground. 9 9 C1+ Positive Terminal of the Voltage Inverter Charge-Pump Capacitor 10 10 GND Ground

Page 6

M A X 3 3 1 1 /M A X 3 3 1 3 460kbps, 1µA Supply Current, RS-232-Compatible Transceivers in µMAX _______________________________________________________________________________________ 5 Detailed Description Single Charge-Pump Voltage Converter The MAX3311/MAX3313 internal power supply has a single inverting charge pump that provides a negative voltage from a single +5V supply. The charge pump operates in a discontinuous mode and requires a flying capacitor (C1) and a reservoir capacitor (C2) to gener- ate the V- supply. RS-232-Compatible Driver The transmitter is an inverting level translator that con- verts CMOS-logic levels to EIA/TIA-232-compatible lev- els. It guarantees data rates up to 460kbps with worst-case loads of 3kΩ in parallel with 1000pF. When SHDN is driven low, the transmitter is disabled and put into three state. The transmitter input does not have an internal pullup resistor. RS-232 Receiver The MAX3311/MAX3313 receiver converts RS-232 sig- nals to CMOS-logic output levels. The MAX3311 receiv- er will remain active during shutdown mode. The MAX3313 INVALID indicates when an RS-232 signal is present at the receiver input, and therefore when the port is in use. The MAX3313 INVALID output is pulled low when no valid RS-232 signal level is detected on the receiver input. MAX3311 Shutdown Mode In shutdown mode, the charge pump is turned off, V- is pulled to ground, and the transmitter output is disabled (Table 1). This reduces supply current typically to 1µA. The time required to exit shutdown is typically less than 100µs. Applications Information Capacitor Selection The capacitor type used for C1 and C2 is not critical for proper operation; either polarized or nonpolarized capacitors are acceptable. If polarized capacitors are used, connect polarity as shown in the Typical Operating Circuit. The charge pump requires 0.1µF capacitors. Increasing the capacitor values (e.g., by a factor of 2) reduces power consumption. C2 can be increased without changing C1’s value. However, do not increase C1’s value without also increasing the value of C2 and CBYPASS to maintain the proper ratios (C1 to the other capacitors). When using the minimum 0.1µF capacitors, make sure the capacitance does not degrade excessively with temperature. If in doubt, use capacitors with a larger nominal value. The capacitor’s equivalent series resis- tance (ESR) usually rises at low temperatures and influ- ences the amount of ripple on V-. To reduce the output impedance at V-, use larger capacitors (up to 10µF). Bypass VCC to ground with at least 0.1µF. In applica- tions sensitive to power-supply noise generated by the charge pump, decouple VCC to ground with a capaci- tor the same size as (or larger than) charge-pump capacitors C1 and C2. Transmitter Output when Exiting Shutdown Figure 1 shows the transmitter output when exiting shutdown mode. The transmitter is loaded with 3kΩ in parallel with 1000pF. The transmitter output displays no ringing or undesirable transients as the MAX3311 comes out of shutdown. Note that the transmitter is enabled only when the magnitude of V- exceeds approximately -3V. Table 1. MAX3311 Shutdown Logic Truth Table SHDN TRANSMITTER OUTPUT RECEIVER OUTPUT CHARGE PUMP L High Z Active Inactive H Active Active Active Figure 1. Transmitter Output when Exiting Shutdown or Powering Up 10µs/div SHDN TOUT 5V/div 0 1.5V/div 0 TIN = GND TIN = VCC

Page 7

M A X 3 3 1 1 /M A X 3 3 1 3 High Data Rates The MAX3311/MAX3313 maintain RS-232-compatible transmitter output voltage (±3.7V minimum) even at high data rates. Figure 2 shows a transmitter loopback test circuit. Figure 3 shows the loopback test result at 120kbps, and Figure 4 shows the same test at 250kbps. 460kbps, 1µA Supply Current, RS-232-Compatible Transceivers in µMAX 6 _______________________________________________________________________ Figure 2. Loopback Test Circuit C1 C2 0.1µF V- TOUTTIN ROUT 1000pF RIN VCC GND 5kΩ +5V MAX3311 MAX3313 C1+ C1- Figure 4. Loopback Test Results at 250kbps 2µs/div TOUT TIN ROUT Figure 3. Loopback Test Results at 120kbps 5µs/div TOUT TIN ROUT Figure 5. Receiver Positive/Negative Thresholds for INVALID R EC EI V ER IN P U T LE V EL S -2.7V -0.3V +2.7V +0.3V 0 INDETERMINATE INVALID HIGH INVALID LOW INVALID HIGH INDETERMINATE

MAX3311CUB+T Reviews

Average User Rating
5 / 5 (139)
★ ★ ★ ★ ★
5 ★
4 ★
3 ★
2 ★
1 ★


February 12, 2020

These did exactly what I needed them to do. Electricity only flows in one direction. Perfect.

Don*****n Fox

February 6, 2020

Very happy for the fast shipping and good price!


January 28, 2020

Works just like the original one and even has the correct connectors installed.


December 29, 2020

Easy transaction. Very pleased with goods in perfect condition would recommend Heisener company.

Muha***** Mehan

December 27, 2019

So far all the items still work. I'm using these for some home made solar panels and they're doing great.

Carl *****enship

December 13, 2019

Purchased this in May and didn't use it until last week. worked and all was good.


November 10, 2019

Thanks a lot! Ease of ordering and I love when they upgrade my shipping for free. What a nice thing to do.


September 23, 2019

All OK, fast delivery, good quality. Product works as it should, Nice Seller.


September 9, 2019

Nice to have an assortment on hand, just in case. Happy with this purchase.


September 4, 2019

This product is very easy to replace and solved my problem.

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