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+3.3V Multiprotocol Software-Selectable Cable Terminators and Transceivers

Save Board Space by Replacing Discrete Resistor Networks and Expensive Relays

Product Details

Key Features

Parametric specs for Multiprotocol Transceivers
Supported Protocols RS-232
RS-423
RS-449
RS-485
RS-530
RS-530A
V.11
V.28
V.35
V.36
X.21
# Single Ended Tx/Rx 1/1
# Diff. Tx/Rx 1/1
RS-232 Data Rate (Mbps) (max) 0.24
RS-485 Data Rate (Mbps) (max) 10
Functions Multiprotocol Cable Terminator and Transceiver
Shutdn Yes
Package/Pins SSOP/28
Budgetary
Price (See Notes)
8.29
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Simplified Block Diagram

Technical Docs

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Sampling:
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Parameters

Parametric specs for Multiprotocol Transceivers
Supported Protocols RS-232
RS-423
RS-449
RS-485
RS-530
RS-530A
V.11
V.28
V.35
V.36
X.21
# Single Ended Tx/Rx 1/1
# Diff. Tx/Rx 1/1
RS-232 Data Rate (Mbps) (max) 0.24
RS-485 Data Rate (Mbps) (max) 10
Functions Multiprotocol Cable Terminator and Transceiver
Shutdn Yes
Package/Pins SSOP/28
Budgetary
Price (See Notes)
8.29

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

Applications/Uses

  • CSUs/DSUs
  • Data Networking
  • Data Routers
  • PCI Cards
  • Telecommunications

Description

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.

Simplified Block Diagram

MAX3172, MAX3174: Typical Operating Circuit MAX3172, MAX3174: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.