An internal charge pump and proprietary low-dropout transmitter output stage allow V.28, V.11, and V.10 compliant operation from a single +3.3V supply. A no-cable mode is entered when all mode pins (M0, M1, and M2) are pulled high or left unconnected. In no-cable mode, supply current decreases to 2mA and all transmitter and receiver outputs are disabled (high impedance). Short-circuit limiting and thermal-shutdown circuits protect the drivers against excessive power dissipation.
The MAX3171 features 10μs deglitching on the V.10/V.11/V.28 receiver inputs. The MAX31730ATC+T is available for applications that do not require deglitching on the serial handshake signals. These parts require only four surface-mount capacitors for charge-pump operation in addition to supply bypassing.
Feature
- Industry's First +3.3V Multiprotocol Transceiver
- Certified TBR-1 and TBR-2 Compliant (NET1 and NET2)
- Supports V.28 (RS-232) and V.10/V.11 (RS-449, V.36, EIA-530, EIA-530-A, X.21, RS-423) Protocols
- 3V/5V Logic Compatibility
- Software-Selectable DCE/DTE-bar
- True Fail-Safe Receiver Operation
- Available in Small 28-Pin SSOP Package
- 10μs Receiver Input Deglitching (MAX3171 only)
- All Transmitter Outputs Fault Protected to ±15V, Tolerate Cable Miswiring
Applications
- CSUs/DSUs
- Data Networking
- Data Routers
- PCI Cards
- Telecommunications
