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MAX3232

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MAX3232 的货源和报价
MAX3232 的相关技术信息
   相关型号 MAX3221ECAE+T MAX3221EEAE MAX3222 MAX3223ECAP MAX3232CSE MAX3232CSE+T MAX3232ECAE MAX3232EEAE
Description
 

 

 

 

 

 

The MAX3222/MAX3232/MAX3237/MAX3241 transceivers have a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a 3.0V to 5.5V supply with a dual charge pump. The devices require only four small 0.1µF external charge-pump capacitors. The MAX3222, MAX3232, and MAX3241 are guaranteed to run at data rates of 120kbps while maintaining RS-232 output levels. The MAX3237 is guaranteed to run at data rates of 250kbps in the normal operating mode and 1Mbps in the MegaBaud™ operating mode, while maintaining RS-232 output levels.

The MAX3222/MAX3232 have 2 receivers and 2 drivers. The MAX3222 features a 1µA shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current. The MAX3222 and MAX3232 are pin, package, and functionally compatible with the industry-standard MAX242 and MAX232, respectively.

The MAX3241 is a complete serial port (3 drivers/ 5 receivers) designed for notebook and subnotebook computers. The MAX3237 (5 drivers/3 receivers) is ideal for fast modem applications. Both these devices feature a shutdown mode in which all receivers can remain active while using only 1µA supply current. Receivers R1 (MAX3237/MAX3241) and R2 (MAX3241) have extra outputs in addition to their standard outputs. These extra outputs are always active, allowing external devices such as a modem to be monitored without forward biasing the protection diodes in circuitry that may have VCC completely removed.

The MAX3222, MAX3237, and MAX3241 are available in space-saving TSSOP and SSOP packages.

Key Features   Applications
  • For Smaller Packaging: MAX3228E/MAX3229E: +2.5V to +5.5V RS-232 Transceivers in UCSP™
  • For Integrated ESD Protection: MAX3222E/MAX3232E/MAX3237E/MAX3241E*/ MAX3246E: ±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers
  • For Low-Voltage or Data Cable Applications: MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2 Tx/2 Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins

 
  		• Battery-Powered Equipment
  		•  Hand-Held Equipment
  		•  High-Speed Modems
  		•  Notebook, Subnotebook, and Palmtop Computers
  		•  Peripherals
  		•  Printers

    Key Specifications:   RS-232 Line Driver/Receivers
    Part Number Supply Voltage (V) Number of Tx Number of Rx Data Rate (kbps) Typ. ICC Current (mA) Internal Charge Pump Number of Ext. Caps Nom. Cap. Value (µF) Number of Rx Active in Shutdown Features Package Operating Temp. Range (°C) RoHS Available Price
    MAX3222  3.3 5 2 2 120 0.3 Yes 4 0.1 2
    • Shutdown
    • Three State Rx O/P
    		 20/SSOP
    18/PDIP
    20/TSSOP
    18/SOIC     		0 to +70 -40 to +85 Yes $1.69 @ 1k
    MAX3232  2 2 120 0.3  - 
    • True RS-232
    		 16/SSOP
    16/PDIP
    16/SOIC
    16/TSSOP     		$1.69 @ 1k
    MAX3237  5 3 1,000 0.5 3
    • Megabaud Data Rate
    • Shutdown
    • Three State Rx O/P
    • True RS-232
    		 28/SSOP $3.29 @ 1k
    MAX3241  3 5 120 0.3 5
    • Micropower
    • Shutdown
    • Three State Rx O/P
    • True RS-232
    		 28/SSOP
    28/TSSOP
    28/SOIC     		$3.11 @ 1k

    Application Notes
  		• App Note 654: New RS-232 ICs Feature 1µA Supply Current, ±15kV ESD Protection, and 3V Operation - MAX3222, MAX3232, MAX3241
  		• App Note 723: Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards - MAX3232
  		• App Note 761: Automatic Test Equipment on a Budget - MAX3232
  		• App Note 2141: Determining Clock Accuracy Requirements for UART Communications - MAX3222, MAX3232, MAX3237, MAX3241
  		• App Note 2394: Interfacing the MAX1169 ADC to a PIC Microcontroller - MAX3232
  		• App Note 3024: IrDA and RS-232: A Match Made in Silicon - MAX3222
  		• App Note 3424: RS-232 Powered Temperature Sensor - MAX3232

    Notes and Comments
  		• MAX242 pinout (MAX3222)
  		• Industry standard MAX232 pinout (MAX3232)
  		• World's fastest RS-232 transceiver at 1Mbps (MAX3237)
  		• Mouse driveability, two spare receivers active in shutdown (MAX3241)

    *Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending.

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