MAX221E:±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown

Industry's Smallest, Low-Power, Single RS-232 Transceiver Featuring ±15kV ESD Protection

The MAX221E is a +5V powered, single transmit/receive RS-232 and V.28 communications interface with automatic shutdown/wake-up features and high data rate capabilities. The MAX221E features enhanced electrostatic discharge (ESD) protection. Both the transmitter output and receiver input are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge Method, to ±8kV using the IEC 1000-4-2 Contact Discharge Method, and to ±15kV using the Human Body Model. The MAX221E achieves a low 1µA supply current with Maxim's revolutionary AutoShutdown™ feature. AutoShutdown saves 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 transmitter of the connected peripheral is off. The MAX221E wakes up and drives the active-low INVALID pin high when an active RS-232 cable is connected, signaling the host that a peripheral is connected to the communications port. The MAX221E is available in a 16-pin SSOP package as well as a 16-pin TSSOP that uses 50% less board space than a 16-pin SO.

Key Features
  • Single RS-232 Transceiver in a Small 16-Pin TSSOP
  • ESD Protection for RS-232 I/O Pins
    • ±15kV-Human Body Model
    • ±8kV-IEC 1000-4-2, Contact Discharge
    • ±15kV-IEC 1000-4-2, Air-Gap Discharge
  • Latchup Free
  • 1µA Supply Current
  • AutoShutdown Saves Power without Changes to BIOS
  • Guaranteed 250kbps Data Rate
MAX221E: Typical Operating Circuit
MAX221E: Typical Operating Circuit
Applications/Uses
  • Industrial Systems
  • Maintenance/Diagnostic Ports
  • Set-Top Boxes
  • Telecommunications
DataSheet
titleDownload file
MAX221E Data SheetMAX221E.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
MAX221E5112505Yes40.1151SSOP/16
TSSOP/16
$1.70 @1k
Quality and Environmental Data
Related Products
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  • MAX3227:1µA Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus
  • MAX3226E:±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus
  • MAX3221E:±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown
  • MAX3227E:±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus
  • MAX3221:+3V to +5.5V RS-232 Transceivers with AutoShutdown
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX221ECAENo Longer AvailableMAX221ECAE+SSOP,;16 pin;50 mm²0°C to +70°CNo
MAX221ECAE+ActiveSSOP,;16 pin;50 mm²0°C to +70°CLead Free
MAX221ECAE+TActiveSSOP,;16 pin;50 mm²0°C to +70°CLead Free
MAX221ECAE-TNo Longer AvailableMAX221ECAE+TSSOP;16 pin0°C to +70°CSee data sheet
MAX221ECUENo Longer AvailableMAX221ECUE+TSSOP,;16 pin;33.4 mm²0°C to +70°CNo
MAX221ECUE+ActiveTSSOP,;16 pin;33.4 mm²0°C to +70°CLead Free
MAX221ECUE+TActiveTSSOP,;16 pin;33.4 mm²0°C to +70°CLead Free
MAX221ECUE-TNo Longer AvailableMAX221ECUE+TTSSOP,;16 pin;33.4 mm²0°C to +70°CNo
MAX221EEAENo Longer AvailableMAX221EEAE+SSOP,;16 pin;50 mm²-40°C to +85°CNo
MAX221EEAE+ActiveSSOP,;16 pin;50 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX221EEAE+TActiveSSOP,;16 pin;50 mm²-40°C to +85°CLead Free
MAX221EEAE-TNo Longer AvailableMAX221EEAE+TSSOP,;16 pin;50 mm²-40°C to +85°CNo
MAX221EEUENo Longer AvailableMAX221EEUE+TSSOP,;16 pin;33.4 mm²-40°C to +85°CNo
MAX221EEUE+ActiveTSSOP,;16 pin;33.4 mm²-40°C to +85°CLead Free
MAX221EEUE+TActiveTSSOP,;16 pin;33.4 mm²-40°C to +85°CLead Free
MAX221EEUE-TNo Longer AvailableMAX221EEUE+TTSSOP,;16 pin;33.4 mm²-40°C to +85°CNo
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MAX221E.pdf MAX221E
MAX221E.pdf MAX221E
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