MAX3223E:±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown

The MAX3221E/MAX3223E/MAX3243E are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wakeup features, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, to ±8kV using IEC 1000-4-2 Contact Discharge, and to ±15kV using the Human Body Model. The MAX3221E/MAX3223E/MAX3243E achieve a 1µA supply current with Maxim's revolutionary AutoShutdown™ feature. They save power without changes to the existing BIOS or operating system by entering low-power shutdown mode when the RS-232 cable is disconnected, or when the transmitters of the connected peripherals are off. The transceivers have a proprietary low-dropout transmitter output stage, delivering true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels. The MAX3221E contains just one driver and one receiver, making it the smallest single-supply RS-232 transceiver. The MAX3223E has two drivers and two receivers. The MAX3243E is a complete 3-driver/5-receiver serial port ideal for notebook or subnotebook computers. It also includes two noninverting receiver outputs that are always active, allowing external devices to be monitored without forward biasing the protection diodes in circuitry that may be powered down. The MAX3221E, MAX3223E, and MAX3243E are available in space-saving TQFN, SSOP, and TSSOP packages.

Key Features
  • For Space-Constrained Applications:
    • MAX3228E/MAX3229E: ±15kV ESD-Protected, +2.5V to +5.5V RS-232 Transceivers in UCSP™
    • MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E: ±15kV ESD-Protected Down to 10nA, +3.0V to +5.5V, Up to 1Mbps, True RS-232 Transceivers (MAX3246E Available in a UCSP Package)
  • For Data Cable Applications:
    • MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2Tx/2Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins
Applications/Uses
  • Battery-Powered Equipment
  • Cell Phones
  • Handheld Equipment
  • Notebook, Subnotebook, and Palmtop Computers
  • Peripherals
  • Printers
DataSheet
titleDownload file
MAX3221E-MAX3243E Data SheetMAX3221E-MAX3243E.pdf
Parametrics
Part NumberVSUPPLY
(V)
TxRxData Rate
(kbps)
ICC
(mA)
Internal Charge PumpExt. CapsCap. Value
(µF)
ESD Protect.
(±kV)
Rx Active in ShutdnPackage/PinsBudgetary
Price
mintypnomSee Notes
MAX3221E3.3
5
112500.3Yes40.1151SSOP/16
TQFN/16
TSSOP/16
$1.87 @1k
MAX3223E222PDIP(N)/20
SSOP/20
TQFN/20
TSSOP/20
$2.95 @1k
MAX3243E351SOIC(W)/28
SSOP/28
TQFN/28
TQFN/32
TSSOP/28
$2.27 @1k
Design kits & evaluation modules
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3223EC/DNo Longer AvailableSee data sheet
MAX3223ECAPNo Longer AvailableMAX3223ECAP+SSOP,;20 pin;57.9 mm²0°C to +70°CNo
MAX3223ECAP+ActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
MAX3223ECAP+TActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
MAX3223ECAP-TNo Longer AvailableMAX3223ECAP+TSSOP;20 pin0°C to +70°CSee data sheet
MAX3223ECPPNo Longer AvailableMAX3223ECPP+PDIP(N),;20 pin;217.1 mm²0°C to +70°CNo
MAX3223ECPP+ActivePDIP(N),;20 pin;217.1 mm²0°C to +70°CLead Free
MAX3223ECTPNo Longer AvailableMAX3223ECTP+TQFN,;20 pin;26 mm²-40°C to +85°CNo
MAX3223ECTP+ActiveTQFN,;20 pin;26 mm²0°C to +70°CLead Free
MAX3223ECTP+TActiveTQFN,;20 pin;26 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3223ECTP-TNo Longer AvailableMAX3223ECTP+TQFN;20 pin-40°C to +85°CSee data sheet
MAX3223ECUPNo Longer AvailableMAX3223ECUP+TSSOP,;20 pin;45.2 mm²0°C to +70°CNo
MAX3223ECUP+ActiveTSSOP,;20 pin;45.2 mm²0°C to +70°CLead Free
MAX3223ECUP+TActiveTSSOP,;20 pin;45.2 mm²0°C to +70°CLead Free
MAX3223ECUP-TNo Longer AvailableMAX3223ECUP+TTSSOP;20 pin0°C to +70°CSee data sheet
MAX3223EEAPNo Longer AvailableMAX3223EEAP+SSOP,;20 pin;57.9 mm²-40°C to +85°CNo
MAX3223EEAP+ActiveSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
MAX3223EEAP+G071No Longer AvailableSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
MAX3223EEAP+TActiveSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
MAX3223EEAP-TNo Longer AvailableMAX3223EEAP+TSSOP,;20 pin;57.9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3223EEAP/GH9No Longer AvailableMAX3223EEAP+SSOP,;20 pin;57.9 mm²-40°C to +85°CNo
MAX3223EEAP/GH9-TNo Longer AvailableMAX3223EEAP+SSOP,;20 pin;57.9 mm²-40°C to +85°CNo
MAX3223EEPPNo Longer AvailableMAX3223EEPP+PDIP(N),;20 pin;217.1 mm²-40°C to +85°CNo
MAX3223EEPP+ActivePDIP(N),;20 pin;217.1 mm²-40°C to +85°CLead Free
MAX3223EETPNo Longer AvailableMAX3223EETP+TQFN,;20 pin;26 mm²-40°C to +85°CNo
MAX3223EETP+ActiveTQFN,;20 pin;26 mm²-40°C to +85°CLead Free
MAX3223EETP+TActiveTQFN,;20 pin;26 mm²-40°C to +85°CLead Free
MAX3223EETP-TNo Longer AvailableMAX3223EETP+TQFN;20 pin-40°C to +85°CSee data sheet
MAX3223EEUPNo Longer AvailableMAX3223EEUP+TSSOP,;20 pin;45.2 mm²-40°C to +85°CNo
MAX3223EEUP+ActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3223EEUP+TActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
MAX3223EEUP-TNo Longer AvailableMAX3223EEUP+TTSSOP,;20 pin;45.2 mm²-40°C to +85°CNo
MAX3223EEUP/V+ActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
MAX3223EEUP/V+TActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
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Oops...Practical ESD Protection vs. Foolhardy Placebos MAX13362
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Design Considerations for Data-Lump Cables MAX3387E
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Maxim Leads the Way in ESD Protection MAX491E
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