MAX3174:+3.3V Multiprotocol Software-Selectable Cable Terminators and Transceivers

Save Board Space by Replacing Discrete Resistor Networks and Expensive Relays

The MAX3172/MAX3174 contain five software-selectable multiprotocol cable termination networks. Each network is capable of terminating V.11 (RS-422, RS-530, RS-530A, RS-449, V.36, and X.21) with a 100Ω differential load, V.35 with a T-network load, or V.28 (RS-232) and V.10 (RS-423) with an open circuit load for use with transceivers having on-chip termination. The devices replace discrete resistor termination networks and expensive relays required for multiprotocol termination. The MAX3172/MAX3174, along with the MAX3170 and MAX3171/MAX3173, form a complete +3.3V software-selectable DTE or DCE interface port supporting V.11/RS-422, RS-530, RS-530A, V.36/RS-449, V.35, V.28/RS-232, V.10/RS-423, and X.21 serial interfaces. In addition to the five multiprotocol cable termination networks, the MAX3172/MAX3174 contain a 1Tx/1Rx multiprotocol transceiver designed to use V+ and V- generated by the MAX3171/MAX3173 charge pump. The MAX3172/MAX3174 transceiver is software selectable between V.10 and V.28 modes of operation. The MAX3172 features 10µs deglitching on the V.10/V.28 receiver input to facilitate unterminated operation while the MAX3174 is used in applications that do not require deglitching on the serial handshake signals. These devices are available in a 28-pin SSOP package.

Key Features
  • Industry's First +3.3V Multiprotocol Termination Networks and Transceiver
  • Certified TBR-1 and TBR-2 Compliant (NET1 and NET2)
  • Supports V.28 (RS-232), V.11 (RS-422, RS-530, RS-530A, RS-449, V.36, and X.21) V.10 and V.35
  • 3V/5V Logic-Compatible I/O
  • Software-Selectable DTE/DCE
  • Replaces Discrete Resistor Termination Networks and Expensive Relays
  • 10µs Receiver Input Deglitching (MAX3172 only)
  • Available in Small 28-Pin SSOP Packages
  • Transmitter Output Fault Protected to ±15V, Tolerates Cable Miswiring
MAX3172, MAX3174: Typical Operating Circuit
MAX3172, MAX3174: Typical Operating Circuit
Applications/Uses
  • CSUs/DSUs
  • Data Networking
  • Data Routers
  • PCI Cards
  • Telecommunications
DataSheet
titleDownload file
MAX3172-MAX3174 Data SheetMAX3172-MAX3174.pdf
Parametrics
Part NumberFunctionsRS-232 Data Rate
(Mbps)
RS-485 Data Rate
(Mbps)
Single Ended Tx/RxDiff. Tx/RxShutdnSupported ProtocolsDCE/ DTE Interchg.Rx Glitch RejectionTx Fault Protect.On Chip Charge PumpICC
(mA)
ICC (Shutdown)
(µA)
Package/PinsBudgetary
Price
maxmaxmaxSee Notes
MAX3172Multiprotocol Cable Terminator and Transceiver0.24101/11/1YesRS-232
RS-423
RS-449
RS-485
RS-530
RS-530A
V.11
V.28
V.35
V.36
X.21
YesYesYesNo0.75200SSOP/28$6.96 @1k
MAX3174RS-232
RS-449
RS-485
RS-530
RS-530A
V.10
V.11
V.28
V.35
X.21
NoSSOP/28$7.22 @1k
Related Products
  • MAX3170:+3.3V, Multiprotocol, 3 Tx/3 Rx, Software-Selectable Clock/Data Transceiver
  • MAX3173:+3.3V Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers
  • MAX3171:+3.3V Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3174CAINo Longer AvailableMAX3174CAI+SSOP;28 pin0°C to +70°CSee data sheet
MAX3174CAI+ActiveSSOP,;28 pin;81.6 mm²0°C to +70°CLead Free
MAX3174CAI+TActiveSSOP,;28 pin;81.6 mm²0°C to +70°CLead Free
MAX3174CAI-TNo Longer AvailableMAX3174CAI+TSSOP;28 pin0°C to +70°CSee data sheet
MAX3172-MAX3174.pdf MAX3174
MAX3172-MAX3174.pdf MAX3174