LTC2847 Datasheet | Linear Technology

.. LTC2847 Software-Selectable Multiprotocol Transceiver with Termination and 3.3V Digital Interface Features s s s DESCRIPTIO s s s Software-Selectable Transceiver Supports: RS232, RS449, EIA530, EIA530-A, V.35, V.36, X.21 Operates from Single 5V Supply Separate Supply Pin for Digital Interface Works down to 3V On-Chip Cable Termination plete DTE or DCE Port with LTC2845 Available in 38-Pin 5mm × 7mm QFN Package U APPLICATIO S s s s Data Networking CSU and DSU Data Routers The LTC®2847 is a 3-driver/3-receiver multiprotocol transceiver with on-chip cable termination. When bined with the LTC2845, this chip set forms a plete softwareselectable DTE or DCE interface port that supports the RS232, RS449, EIA530, EIA530-A, V.35, V.36 and X.21 protocols. All necessary cable termination is provided inside the LTC2847. The VCC supplies the drivers, the receivers and an internal charge pump that requires only five space-saving surface mounted capacitors. The VIN supply drives the digital interface circuitry including the receiver output drivers. It can be tied to VCC or be powered off a lower supply (down to 3V) to interface with low voltage ASICs. The LTC2847 is available in a 0.8mm tall, 5mm × 7mm QFN package. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO plete DTE or DCE Multiprotocol Serial Interface with DB-25 Connector RL TM LL RI CTS DSR DCD DTR RTS RXD RXC TXC SCTE TXD LTC2845 D5 R5 D4 R4 R3 R2 R1 D3 D2 D1 R3 R2 - 13 5 22 6 10 8 23 20 19 4 DB-25 CONNECTOR 2847 TA01 - OPTIONAL sn2847 2847fs Data Sheet 4 U . LTC2847 D3 R1 D2 D1 T T T 17 12 15 11 24 14 2 DSR A (107) DTR B DTR A (108) RTS B RTS A (105) SHIELD (101) SG (102) DCD B DCD A (109) TXC B TXC A (114) SCTE B SCTE A (113) TXD B TXD A (103) RXD B RXD A (104) RXC B RXC A (115) RI (125) CTS B CTS A (106) DSR B RL (140) TM (142) LL A...