MAX13444E:±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 Transceivers

Simplifies Design and Reduces Board Space by Eliminating External Components Required for Overvoltage Protection Up to ±80V, Such as TVSs and PTCs

The MAX13442E/MAX13444E are fault-protected RS-485 and J1708 transceivers that feature ±80V protection from signal faults on communication bus lines. The MAX13442E/MAX13444E feature a reduced slew-rate driver that minimizes EMI and reflections, allowing error-free transmission up to 250kbps. The MAX13443E driver can transmit up to 10Mbps. The high-speed MAX13443E RS-485 tranceiver features ±60V protection from signal faults on communication bus lines. These transceivers feature foldback current limit. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1/4-unit-load receiver input impedance allows up to 128 transceivers on a single bus. The devices operate from a 5V supply. True fail-safe inputs guarantee a logic-high receiver output when the receiver inputs are open, shorted, or connected to an idle data line. Hot-swap circuitry eliminates false transitions on the data bus during circuit initialization or connection to a live backplane. Short-circuit current-limiting and thermal-shutdown circuitry protect the driver against excessive power dissipation, and on-chip ±15kV ESD protection eliminates costly external protection devices. The MAX13442E/MAX13443E/MAX13444E are available in an 8-pin SO package and are specified over the automotive temperature range.

Key Features
  • ±15kV ESD Protection
  • ±80V Fault Protection (±60V MAX13443E)
  • Guaranteed 10Mbps Data Rate (MAX13443E)
  • Hot-Swappable for Telecom Applications
  • True Fail-Safe Receiver Inputs
  • Enhanced Slew-Rate-Limiting Facilitates Error-Free Data Transmission (MAX13442E/MAX13444E)
  • Allow Up to 128 Transceivers on the Bus
  • -7V to +12V Common-Mode Input Range
  • ±6mA FoldBack Current Limit
  • Industry-Standard Pinout
MAX13442E, MAX13443E, MAX13444E: Pin Configurations and Typical Operating Circuits
MAX13442E, MAX13443E, MAX13444E: Pin Configurations and Typical Operating Circuits
Applications/Uses
  • Automotive Applications
  • HVAC Controls
  • Industrial Networks
  • RS-422/RS-485 Communications
  • Telecommunications Systems
  • Truck and Trailer Applications
DataSheet
titleDownload file
MAX13442E-MAX13444E Data SheetMAX13442E-MAX13444E.pdf
Parametrics
Part NumberTx/RxDuplexVSUPPLY
(V)
Fault Protect.
(±V)
ICC
(mA)
Data Rate
(kbps)
ESD Protect.
(±kV)
Tx ENRx ENICC (Shutdn.)
(µA)
Rx/Tx on BusRx Failsafe w/ InputsSlew Rate LimitingOper. Temp.
(°C)
Package/PinsBudgetary
Price
typmintypSee Notes
MAX13442E1Tx + 1RxHalf5801625015YesYes0.001128Open or ShortedYes-40 to +125SOIC(N)/8$3.03 @1k
MAX13443E60510000SOIC(N)/8
MAX13444E8010250SOIC(N)/8
Related Products
  • MAX3430:±80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V RS-485 Transceiver
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX13444EASANo Longer AvailableMAX13444EASA+SOIC(N),;8 pin;30.9 mm²-40°C to +125°CNo
MAX13444EASA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX13444EASA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX13444EASA-TNo Longer AvailableMAX13444EASA+TN.SO;8 pin-40°C to +125°CSee data sheet
MAX13444EASA/V+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX13444EASA/V+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX13442E-MAX13444E.pdf MAX13444E
MAX13442E-MAX13444E_cn.pdf MAX13444E