MAX3381E:+2.35V to +5.5V, 1µA, 2Tx/2Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins

Ideal for Data Cable Applications

The MAX3380E/MAX3381E are +2.35V to +5.5V-powered EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection on both the TTL and RS-232 sides. The MAX3380E/MAX3381E have two receivers and two transmitters. All RS-232 inputs, outputs, and logic input pins are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge method and the Human Body Model, and ±8kV using IEC 1000-4-2 Contact Discharge method. The proprietary low-dropout transmitter output stage enables true RS-232 performance from a +3.1V to +5.5V supply with a dual charge pump. The parts reduce the transmitter output levels to RS-232-compatible levels with no increase in supply current for supplies less than +3.1V and greater than +2.35V. The +2.35V to +5.5V operating range is fully compatible with lithium-ion (Li+) batteries. The charge pump requires only four small 0.1µF capacitors for operation. The MAX3380E/MAX3381E transceivers use Maxim's revolutionary AutoShutdown Plus™ feature to automatically enter a 1µA shutdown mode. These devices shut down the on-board power supply and drivers when they do not sense a valid signal transition for 30 seconds on either the receiver or transmitter inputs. The MAX3380E is capable of transmitting data at rates of 460kbps while maintaining RS-232 output levels, and the MAX3381E operates at data rates up to 250kbps. The MAX3381E offers a slower slew rate for applications where noise and EMI are issues. The MAX3380E/MAX3381E have a unique VL pin that allows interoperation in mixed-logic voltage systems down to +1.65V. Both input and output logic levels are referenced to the VL pin. The MAX3380E/MAX3381E are available in a space-saving TSSOP package.

Key Features
  • ±15kV ESD Protection on All CMOS and RS-232 Inputs and Outputs (Except active-low INVALID)
    • ±15kV Human Body Model
    • ±15kV IEC 1000-4-2 Air-Gap Discharge
    • ±8kV IEC 1000-4-2 Contact Discharge
  • Operates Over Entire Li+ Battery Range
  • Low Logic Threshold Down to +1.65V for Compatibility with Cell Phone Logic Supply Voltages
  • 1µA Low-Power AutoShutdown Plus Mode
  • Compatible with Next-Generation GSM Data Rates
  • 20-Pin TSSOP Package
MAX3380E, MAX3381E: Typical Operating Circuit
MAX3380E, MAX3381E: Typical Operating Circuit
Applications/Uses
  • Cellular Data Cables
  • Digital Still Cameras
  • GPS Receivers
  • PDA Data Lump Cables
DataSheet
titleDownload file
MAX3380E-MAX3381E Data SheetMAX3380E-MAX3381E.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
MAX3380E2.5
3
3.3
5
224600.3Yes40.1152TSSOP/20$3.63 @1k
MAX3381E250TSSOP/20
Quality and Environmental Data
Related Products
  • MAX3222E:±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers
  • MAX3224E:±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus
  • MAX3225E:±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3381ECUPNo Longer AvailableMAX3381ECUP+TSSOP,;20 pin;45.2 mm²0°C to +70°CNo
MAX3381ECUP+ActiveTSSOP,;20 pin;45.2 mm²0°C to +70°CLead Free
MAX3381ECUP+TActiveTSSOP,;20 pin;45.2 mm²0°C to +70°CLead Free
MAX3381ECUP-TNo Longer AvailableMAX3381ECUP+TTSSOP;20 pin0°C to +70°CSee data sheet
MAX3381EEUPNo Longer AvailableMAX3381EEUP+TSSOP,;20 pin;45.2 mm²-40°C to +85°CNo
MAX3381EEUP+ActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
MAX3381EEUP+TActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
MAX3381EEUP-TNo Longer AvailableMAX3381EEUP+TTSSOP;20 pin-40°C to +85°CSee data sheet
MAX3380E-MAX3381E.pdf MAX3381E
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