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MAX3172 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3172 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 19 page General Description The MAX3172/MAX3174 contain five software-selec- table 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 dif- ferential 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 net- works 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 selec- table 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. ________________________Applications Data Networking PCI Cards CSU and DSU Telecommunications Data Routers Features ♦ Industry’s First +3.3V Multiprotocol Termination Networks and Transceivers ♦ Certified TBR-1 and TBR-2 Compliant (NET1 and NET2) ♦ Support 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 ♦ Replace Discrete Resistor Termination Networks and Expensive Relays ♦ 10µs Receiver Input Deglitching (MAX3172 only) ♦ Available in Small 28-Pin SSOP Package ♦ Transmitter Output Fault Protected to ±15V, Tolerates Cable Miswiring +3.3V Multiprotocol Software-Selectable Cable Terminators and Transceivers ________________________________________________________________ Maxim Integrated Products 1 19-1801; Rev 2; 6/04 Ordering Information PART TEMP RANGE PIN-PACKAGE MAX3172CAI 0 °C to +70°C 28 SSOP MAX3172EAI -40 °C to +85°C 28 SSOP MAX3174CAI 0 °C to +70°C 28 SSOP D1 D2 D3 R1 R2 R3 MAX3170 RXD RXC TXD TXC SCTE D1 R4 D4 D2 D3 R1 R2 R3 MAX3171 MAX3173 MAX3172 MAX3174 CTS DSR RTS DTR LL DCD DB-25 CONNECTOR 13 5 10 8 22 6 23 20 19 4 1 7 16 18 3 9 17 12 15 11 24 14 2 Typical Operating Circuit Pin Configuration appears at end of data sheet. For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. |
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