MAX3465:+5V, Fail-Safe, 40Mbps, PROFIBUS RS-485/RS-422 Transceivers

5V, Fail-Safe, 40Mbps PROFIBUS RS-485/RS-422 Transceivers

The MAX3465-MAX3469 are high-speed differential bus transceivers for RS-485 and RS-422 communications. They are designed to meet TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards. The transceiver complies with the PROFIBUS specification providing +2.1V minimum output level with a 54Ω load, 40Mbps data rate, and output skew less than 2ns. Each part contains one three-state differential line driver and one differential input line receiver. The devices operate from a +5V supply and feature true fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This enables all receiver outputs on a terminated bus to output logic highs when all transmitters are disabled. All devices feature a 1/4-standard-unit load receiver input impedance that allows 128 transceivers on the bus. Driver and receiver propagation delays are guaranteed under 20ns for multidrop, clock distribution applications. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry. The driver and receiver feature active-high and active-low enables, respectively, that can be connected together externally to serve as a direction control.

Key Features
  • Recommended for PROFIBUS Applications
  • Up to 40Mbps Data Rate
  • 15ns Transmitter Propagation Delay
  • 20ns Receiver Propagation Delay
  • 2ns Transmitter and Receiver Skew
  • High Differential Driver Output Level (2.1V on 54Ω)
  • Hot-Swap Versions
  • 1µA Shutdown Supply Current
  • Low Supply Current Requirements (2.5mA, typ)
  • Allow Up to 128 Transceivers on the Bus
  • True Fail-Safe Receiver while Maintaining EIA/TIA-485 Compatibility
  • Designed for Multipoint Transmissions on Long or Noisy Bus Lines
  • Full-Duplex and Half-Duplex Versions Available
  • Phase Controls to Correct for Twisted-Pair Reversal for 14-Pin Versions
  • Current-Limiting and Thermal Shutdown for Driver Overload Protection
MAX3465, MAX3466, MAX3467, MAX3468, MAX3469: Pin Configurations and Typical Operating Circuit
MAX3465, MAX3466, MAX3467, MAX3468, MAX3469: Pin Configurations and Typical Operating Circuit
Applications/Uses
  • High-Speed RS-422 Communications
  • High-Speed RS-485 Communications
  • Industrial-Control Local Area Networks
  • Level Translators
  • PROFIBUS Applications
DataSheet
titleDownload file
MAX3465-MAX3469 Data SheetMAX3465-MAX3469.pdf
Parametrics
Part NumberTx/RxDuplexVSUPPLY
(V)
ICC
(mA)
Data Rate
(kbps)
Tx ENRx ENICC (Shutdn.)
(µA)
Rx/Tx on BusRx Failsafe w/ InputsSlew Rate LimitingOper. Temp.
(°C)
Package/PinsBudgetary
Price
typmintypSee Notes
MAX34651Tx + 1RxFull52.530000YesYes1128Open or ShortedNo-40 to +85
0 to +70
PDIP(N)/14
SOIC(N)/14
$2.26 @1k
MAX3466FullYesYes1PDIP(N)/14
SOIC(N)/14
$2.26 @1k
MAX3467FullNoNo-PDIP(N)/8
SOIC(N)/8
$1.81 @1k
MAX3468HalfYesYes1PDIP(N)/8
SOIC(N)/8
$1.84 @1k
MAX3469HalfYesYes1PDIP(N)/8
SOIC(N)/8
$1.62 @1k
Quality and Environmental Data
Related Products
  • MAX6464:Ultra-Low-Power Voltage Detectors and µP Supervisory Circuits
  • MAX6463:Ultra-Low-Power Voltage Detectors and µP Supervisory Circuits
  • MAX3460:+5V, Fail-Safe, 20Mbps, PROFIBUS RS-485/RS-422 Transceivers
  • MAX3461:+5V, Fail-Safe, 20Mbps, PROFIBUS RS-485/RS-422 Transceivers
  • MAX3462:+5V, Fail-Safe, 20Mbps, PROFIBUS RS-485/RS-422 Transceivers
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3465CPDNo Longer AvailableMAX3465CPD+PDIP(N),;14 pin;158.4 mm²0°C to +70°CNo
MAX3465CPD+ActivePDIP(N),;14 pin;158.4 mm²0°C to +70°CLead Free
MAX3465CSDNo Longer AvailableMAX3465CSD+SOIC(N),;14 pin;54.2 mm²0°C to +70°CNo
MAX3465CSD+ActiveSOIC(N),;14 pin;54.2 mm²0°C to +70°CLead Free
MAX3465CSD+TActiveSOIC(N),;14 pin;54.2 mm²0°C to +70°CLead Free
MAX3465CSD-TNo Longer AvailableMAX3465CSD+TN.SO;14 pin0°C to +70°CSee data sheet
MAX3465EPDNo Longer AvailablePDIP(N),;14 pin;158.4 mm²-40°C to +85°CNo
MAX3465ESDNo Longer AvailableMAX3465ESD+SOIC(N),;14 pin;54.2 mm²-40°C to +85°CNo
MAX3465ESD+ActiveSOIC(N),;14 pin;54.2 mm²-40°C to +85°CLead Free
MAX3465ESD+TActiveSOIC(N),;14 pin;54.2 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3465ESD-TNo Longer AvailableMAX3465ESD+TN.SO;14 pin-40°C to +85°CSee data sheet
MAX3465-MAX3469.pdf MAX3469
RS-485 (EIA/TIA-485) Differential Data Transmission System Basics MAX3465
MAX3465.pdf MAX3465
MAX3465-MAX3469.pdf MAX3469