MAX3070E:+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers

±15kV ESD-Protected, +3.3V, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers

The MAX3070E–MAX3079E 3.3V, ±15kV ESD-protected, RS-485/RS-422 transceivers feature one driver and one receiver. These devices include fail-safe circuitry, guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3070E–MAX3079E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion. The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX3073E/MAX3074E/MAX3075E also feature slew-rate-limited drivers but allow transmit speeds up to 500kbps. The MAX3076E/MAX3077E/MAX3078E driver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX3079E slew rate is pin selectable for 250kbps, 500kbps, and 16Mbps. The MAX3072E/MAX3075E/MAX3078E are intended for half-duplex communications, and the MAX3070E/MAX3071E/MAX3073E/MAX3074E/MAX3076E/MAX3077E are intended for full-duplex communications. The MAX3079E is selectable for half-duplex or full-duplex operation. It also features independently programmable receiver and transmitter output phase through separate pins. The MAX3070E-MAX3079E transceivers draw 800µA of supply current when unloaded or when fully loaded with the drivers disabled. All devices have a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus.

Key Features
  • Protection for Robust Performance
    • ±15kV Human Body Model ESD on I/O Pins
    • True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility
    • Enhanced Slew-Rate-Limiting Facilitates Error-Free Data Transmission (MAX3070E-MAX3075E/MAX3079E)
    • Hot-Swap Input Structure on DE and Active-Low RE
  • Flexible Feature Set for Ease of Design
    • Pin-Selectable Full/Half-Duplex Operation (MAX3079E)
    • Phase Controls to Correct for Twisted-Pair Reversal (MAX3079E)
    • Allows up to 256 Transceivers on the Bus
    • Available in Industry-Standard SO and DIP packages
  • 10µA Shutdown Current Mode for Power Savings (Except MAX3071E/MAX3074E/MAX3077E)
MAX3070E, MAX3071E, MAX3072E, MAX3073E, MAX3074E, MAX3075E, MAX3076E, MAX3077E, MAX3078E, MAX3079E: Pin Configurations and Typical Operating Circuits
MAX3070E, MAX3071E, MAX3072E, MAX3073E, MAX3074E, MAX3075E, MAX3076E, MAX3077E, MAX3078E, MAX3079E: Pin Configurations and Typical Operating Circuits
Applications/Uses
  • Industrial Control
  • Instrumentation
  • Lighting Systems
  • Security Systems
  • Telecom
DataSheet
titleDownload file
MAX3070E-MAX3079E Data SheetMAX3070E-MAX3079E.pdf
Parametrics
Part NumberTx/RxDuplexVSUPPLY
(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
MAX3070E1Tx + 1RxFull3.30.825015YesYes0.05256Open or ShortedNo-40 to +85
-40 to +125
PDIP(N)/14
SOIC(N)/14
$2.80 @1k
MAX3071EFull250NoNo-PDIP(N)/8
SOIC(N)/8
MAX3072EHalf250YesYes0.05PDIP(N)/8
SOIC(N)/8
MAX3073EFull500YesYes0.05PDIP(N)/14
SOIC(N)/14
MAX3074EFull500NoNo-PDIP(N)/8
SOIC(N)/8
MAX3075EHalf500YesYes0.05PDIP(N)/8
SOIC(N)/8
MAX3076EFull16000YesYes0.05PDIP(N)/14
SOIC(N)/14
MAX3077EFull16000NoNo-PDIP(N)/8
SOIC(N)/8
MAX3078EHalf16000YesYes0.05PDIP(N)/8
SOIC(N)/8
MAX3079EHalf/Full16000YesYes0.05PDIP(N)/14
SOIC(N)/14
Quality and Environmental Data
Related Products
  • MAX3080E:±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers
  • MAX3089E:±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3070EAPDNo Longer AvailableMAX3070EAPD+PDIP(N),;14 pin;158.4 mm²-40°C to +125°CNo
MAX3070EAPD+ActivePDIP(N),;14 pin;158.4 mm²-40°C to +125°CLead Free
MAX3070EASDNo Longer AvailableMAX3070EASD+SOIC(N),;14 pin;54.2 mm²-40°C to +125°CNo
MAX3070EASD+ActiveSOIC(N),;14 pin;54.2 mm²-40°C to +125°CLead Free
MAX3070EASD+TActiveSOIC(N),;14 pin;54.2 mm²-40°C to +125°CLead Free
MAX3070EASD-TNo Longer AvailableMAX3070EASD+TN.SO;14 pin-40°C to +125°CSee data sheet
MAX3070EEPDNo Longer AvailableMAX3070EEPD+PDIP(N),;14 pin;158.4 mm²-40°C to +85°CNo
MAX3070EEPD+ActivePDIP(N),;14 pin;158.4 mm²-40°C to +85°CLead Free
MAX3070EESDNo Longer AvailableMAX3070EESD+SOIC(N),;14 pin;54.2 mm²-40°C to +85°CNo
MAX3070EESD+ActiveSOIC(N),;14 pin;54.2 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3070EESD+TActiveSOIC(N),;14 pin;54.2 mm²-40°C to +85°CLead Free
MAX3070EESD-TNo Longer AvailableMAX3070EESD+TSOIC(N),;14 pin;54.2 mm²-40°C to +85°CNo
MAX3070E-MAX3079E.pdf MAX3079E
RS-485 (EIA/TIA-485) Differential Data Transmission System Basics MAX3465
MAX3070E.pdf MAX3070E