MAX13235E:3Mbps RS-232 Transceivers with Low-Voltage Interface, ±15kV HBM ESD

Industry's Fastest RS-232 Transceivers (up to 3Mbps) with Integrated Logic-Level Translation

The MAX13234E–MAX13237E are +3V to +5.5V powered EIA/TIA-232 and V.28/V.24 communications interfaces with high data-rate capabilities (up to 3Mbps), a flexible logic voltage interface, and enhanced electrostatic discharge (ESD) protection. All receiver inputs and transmitter outputs are protected to ±15kV IEC 61000–4-2 Air Gap Discharge, ±8kV IEC 61000-4-2 Contact Discharge, and ±15kV Human Body Model. The low-voltage logic interface operates with a voltage supply from +1.62V to VCC. The MAX13234E/MAX13235E have two receivers and two transmitters, while the MAX13236E/MAX13237E have a single receiver and transmitter. The transmitters have a low-dropout transmitter output stage, delivering true RS-232 performance from a +3V to +5.5V supply based on a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. All devices achieve a 1µA supply current using Maxim's AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the devices driving the transmitter and receiver inputs are inactive for more than 30s. The MAX13234E–MAX13237E are available in space-saving TQFN and TSSOP packages and operate over the -40°C to +85°C extended temperature range.

Key Features
  • Data Rate Up to 3Mbps for Faster Throughput
  • Saves Board Space
    • Integrated Low-Voltage Logic for Easy Interface with ASICs and Microcontrollers
    • Integrated ±15kV HBM ESD Protection
    • Integrated Charge-Pump Circuitry Requiring Only Four External 0.1µF Capacitors for 3.3V Operation
  • +3V to +5.5V Supply Voltage
  • AutoShutdown Plus Achieves 1µA Shutdown Current Reduces Power Consumption
  • Available in 20-pin TSSOP, TQFN-EP, and 16-pin TQFN
  • -40°C to +85°C Operating Temperature
MAX13234E, MAX13235E, MAX13236E, MAX13237E: Functional Diagrams
MAX13234E, MAX13235E, MAX13236E, MAX13237E: Functional Diagrams
Applications/Uses
  • Communication Systems
  • Data Cables
  • GPS Systems
  • Industrial Systems
  • Portable Devices
  • POS Systems
  • Telematics
  • Wireless Modules
DataSheet
titleDownload file
MAX13234E-MAX13237E Data SheetMAX13234E-MAX13237E.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
MAX13234E3
3.3
5
222500.001Yes40.1150TQFN/20
TSSOP/20
$4.42 @1k
MAX13235E223000TQFN/20
TSSOP/20
$4.42 @1k
MAX13237E113000TQFN/16$3.40 @1k
Design kits & evaluation modules
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX13235EETPNo Longer AvailableMAX13235EETP+TQFN,;20 pin;26 mm²-40°C to +85°CNo
MAX13235EETP+ActiveTQFN,;20 pin;26 mm²-40°C to +85°CLead Free
MAX13235EETP+TActiveTQFN,;20 pin;26 mm²-40°C to +85°CLead Free
MAX13235EETP-TNo Longer AvailableMAX13235EETP+TQFN;-40°C to +85°CSee data sheet
MAX13235EEUPNo Longer AvailableMAX13235EEUP+TSSOP,;20 pin;45.2 mm²-40°C to +85°CNo
MAX13235EEUP+ActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
MAX13235EEUP+TActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
MAX13235EEUP-TNo Longer AvailableMAX13235EEUP+TTSSOP;-40°C to +85°CSee data sheet
MAX13235EIUP+No Longer AvailableTSSOP,;20 pin;45.2 mm²-20°C to +85°CLead Free
MAX13235EIUP+TActiveTSSOP,;20 pin;45.2 mm²-20°C to +85°CLead Free
MAX13234E-MAX13237E.pdf MAX13237E
MAX13235E.pdf MAX13235E
MAX13234E-MAX13237E.pdf MAX13237E