LTC2846 Datasheet | Linear Technology

.. LTC2846 3.3V Software-Selectable Multiprotocol Transceiver with Termination Features s s s DESCRIPTIO s s s s s U APPLICATIO S s s s Software-Selectable Transceiver Supports: RS232, RS449, EIA530, EIA530-A, V.35, V.36, X.21 Operates from Single 3.3V Supply TUV Rheinland of North America Inc. Certified NET1, NET2 and TBR2 pliant, Report No.: TBR2/050101/02, TBR2/051501/02 1.2MHz Boost Switching Regulator for 3.3V to 5V Conversion On-Chip Cable Termination plete DTE or DCE Port with LTC2844 or LTC2845 Small Footprint Available in 36-Lead SSOP (0.209 Wide) Package The LTC®2846 is a 3-driver/3-receiver multiprotocol transceiver with on-chip cable termination. When bined with the LTC2844 or LTC2845, this chip set forms a plete software-selectable 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 LTC2846. The LTC2846 has a boost regulator that takes in a 3.3V input and switches at 1.2MHz, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. The 5V output drives an internal charge pump that requires only five space-saving surface mounted capacitors. The LTC2846 is available in a 36-lead SSOP surface mount package. , LTC and LT are registered trademarks of Linear Technology Corporation. Data Networking CSU and DSU Data Routers TYPICAL APPLICATIO LL CTS DSR plete DTE or DCE Multiprotocol Serial Interface with DB-25 Connector DCD DTR RTS RXD RXC TXC SCTE TXD LTC2844 D4 R4 R3 R2 R1 D3 D2 D1 R3 R2 LTC2846 D3 R1 D2 D1 13 5 22 6 10 8 23 20 19 4 DB-25 CONNECTOR 2846 TA01 Data Sheet 4 U . T T T 12 15 11 24 14 2 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) sn2846 2846fs DSR B DSR A (107) LL A (141) CTS B CTS A...