5 4 3 2 1 M0 D1 MBR0520LT1 2 1 VCC C5 10uF 10V,X5R 2 L1 5.6uH CR43-5R6 3 JP1 JMPR 1 D D 36 FB 35 3 VIN SGND 34 4 SHDN C2+ 33 C1 1uF C3 10V,X5R 1uF VDD 10V,X5R 5 C1- C2- 32 C1+ VEE 31 VDD GND 30 VCC 8 VCC D1A 29 9 D1 D1B 28 10 D2 D2A 27 11 D3 D2B 26 12 R1 D3/R1A 25 13 R2 D3/R1B 24 VIN SHDN E1 1 DTE_TXD/DCE_RXD E2 C7 1uF 10V,X5R 1 DTE_SCTE/DCE_RXC E3 1 DTE_TXC/DCE_TXC E4 C 1 DTE_RXC/DCE_SCTE E5 1 DTE_RXD/DCE_TXD M0 C8 1uF 10V,X5R M1 VIN M2 C9 1uF 10V,X5R E6 1 DTE_RTS/DCE_CTS E7 B C10 1uF 10V,X5R 1 DTE_DTR/DCE_DSR E8 1 DTE_DCD/DCE_DCD E9 1 DTE_DSR/DCE_DTR E10 1 DTE_CTS/DCE_RTS E11 1 DTE_LL/DCE_LL 6 7 14 R3 R2A 23 15 M0 R2B 22 16 M1 R3A 21 17 VIN R3B 20 18 M2 DCE 19 R2 4.3K 1% 1 VDD 2 VCC VDD 28 GND 27 3 D1 D1A 26 4 D2 D1B 25 5 D3 D2A 24 6 R1 D2B 23 7 R2 D3/R1A 22 8 R3 D3/R1B 21 9 D4 R2A 20 10 R4 R2B 19 M0 11 M0 R3A 18 M1 12 M1 R3B 17 M2 13 M2 D4/R4A 16 DCE 14 DCE VIN 15 3 JP3 JMPR 1 VEE 3 JP4 JMPR 1 3 JP5 JMPR 1 E32 1 C4 3.3uF 10V,X5R DTE_TXDA/DCE_RXDA E31 1 DTE_TXDB/DCE_RXDB TTL LEVEL MODE SELECT DCE E30 1 DTE_SCTEA/DCE_RXCA E29 1 DTE_SCTEB/DCE_RXCB SHDN E28 1 DTE_TXCA/DCE_TXCA E27 1 DTE_TXCB/DCE_TXCB VIN C E26 1 DTE_RXCA/DCE_SCTEA E25 1 DTE_RXCB/DCE_SCTEB E24 1 DCE E33 1 DTE_RXDA/DCE_TXDA E23 1 DTE_RXDB/DCE_TXDB E22 VEE JP2 JMPR 1 M2 C2 1uF 10V,X5R U2 LTC2844CG VCC 3 2 SW PGND 2 NC 2 M1 2 1 C6 10uF 10V,X5R R1 13K 5% 2 U1 LTC2846CG VEE 1 C11 1uF 10V,X5R VIN 1 GND 1 VIN INPUT POWER J2 DTE_RTSA/DCE_CTSA GND E34 E21 1 VIN J1 1 GND DTE_RTSB/DCE_CTSB E20 1 B DTE_DTRA/DCE_DSRA E19 1 DTE_DTRB/DCE_DSRB VDD E18 1 E35 1 VDD DTE_DCDA/DCE_DCDA E17 1 DTE_DCDB/DCE_DCDB E36 VEE 1 VCC 1 CHARGE PUMP OUTPUT VEE E16 1 DTE_DSRA/DCE_DTRA E15 1 DTE_DSRB/DCE_DTRB E14 1 VIN C12 1uF 10V,X5R E37 DTE_CTSA/DCE_RTSA VCC E13 1 SWITCHER OUTPUT DTE_CTSB/DCE_RTSB E12 1 DTE_LL/DCE_LL LINEAR TECHNOLOGY CORPORATION A 1630 McCARTHY BLVD. MILPITAS, CA. 95035 PHONE 408-432-1900 FAX 408-434-0507 Title Software-Selectable Multi-Protocal Transceiver 5 NOTES: 4 UNLESS OTHERWISE SPECIFIED 3 2 Size Document Number Date: Thursday, March 07, 2002 DEMO 497A Rev LTC2846CG/LTC2844CG Sheet 1 1 of 1 A