MAX3464:+5V, Fail-Safe, 20Mbps, PROFIBUS RS-485/RS-422 Transceivers

The MAX3460–MAX3464 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 output level with a 54Ω load, 20Mbps 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
  • Guaranteed 20Mbps Data Rate
  • 20ns Transmitter and 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
MAX3460, MAX3461: Pin Configuration
MAX3460, MAX3461: Pin Configuration
Applications/Uses
  • High-Speed RS-422 Communications
  • High-Speed RS-485 Communications
  • Industrial Control Local Area Networks
  • Level Translators
  • PROFIBUS Applications
DataSheet
titleDownload file
MAX3460-MAX3464 Data SheetMAX3460-MAX3464.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
MAX34601Tx + 1RxFull52.520000YesYes1128Open or ShortedNo-40 to +85
0 to +70
PDIP(N)/14
SOIC(N)/14
$3.53 @1k
MAX3461FullYesYes1PDIP(N)/14
SOIC(N)/14
$3.88 @1k
MAX3462FullNoNo-PDIP(N)/8
SOIC(N)/8
$3.00 @1k
MAX3463HalfYesYes1PDIP(N)/8
SOIC(N)/8
$1.76 @1k
MAX3464HalfYesYes1PDIP(N)/8
SOIC(N)/8
$3.11 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3464CPANo Longer AvailablePDIP(N),;8 pin;81.9 mm²0°C to +70°CNo
MAX3464CSANo Longer AvailableMAX3464CSA+SOIC(N),;8 pin;30.9 mm²0°C to +70°CNo
MAX3464CSA+ActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
MAX3464CSA+TActiveN.SO;8 pin0°C to +70°CSee data sheet
MAX3464CSA-TNo Longer AvailableMAX3464CSA+TN.SO;8 pin0°C to +70°CSee data sheet
MAX3464EPANo Longer AvailablePDIP(N),;8 pin;81.9 mm²-40°C to +85°CNo
MAX3464ESANo Longer AvailableMAX3464ESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX3464ESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX3464ESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX3464ESA-TNo Longer AvailableMAX3464ESA+TN.SO;8 pin-40°C to +85°CSee data sheet
MAX3460-MAX3464.pdf MAX3464
Using RS-485/RS-422 Transceivers in Fieldbus Networks MAX3464
MAX3464.pdf MAX3464
MAX3460-MAX3464.pdf MAX3464