MAX3172：+3.3V、多协议、软件可选的电缆端接器及收发器

替代分立电阻网络和昂贵的继电器，有效节省电路板空间

The MAX3172/MAX3174 contain five software-selectable 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 differential 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 networks 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 selectable 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.

关键特性

Industry's First +3.3V Multiprotocol Termination Networks and Transceiver
Certified TBR-1 and TBR-2 Compliant (NET1 and NET2)
Supports 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
Replaces Discrete Resistor Termination Networks and Expensive Relays
10µs Receiver Input Deglitching (MAX3172 only)
Available in Small 28-Pin SSOP Packages
Transmitter Output Fault Protected to ±15V, Tolerates Cable Miswiring

MAX3172、MAX3174：典型工作电路

应用

CSU/DSU
数据网络
数据路由器
PCI卡
电信

数据手册DataSheet

语言	下载文件	备注
英文	MAX3172-MAX3174.pdf	Rev 2; 08/2004

关键参数

Part Number	Functions	RS-232 Data Rate (Mbps)	RS-485 Data Rate (Mbps)	Single Ended Tx/Rx	Diff. Tx/Rx	Shutdn	Supported Protocols	DCE/ DTE Interchg.	Rx Glitch Rejection	Tx Fault Protect.	On Chip Charge Pump	I_CC (mA)	I_CC (Shutdown) (µA)	Package/Pins	Budgetary Price
Part Number	Functions	max	max	Single Ended Tx/Rx	Diff. Tx/Rx	Shutdn	Supported Protocols	DCE/ DTE Interchg.	Rx Glitch Rejection	Tx Fault Protect.	On Chip Charge Pump	max	I_CC (Shutdown) (µA)	Package/Pins	See Notes
MAX3172	Multiprotocol Cable Terminator and Transceiver	0.24	10	1/1	1/1	Yes	RS-232 RS-423 RS-449 RS-485 RS-530 RS-530A V.11 V.28 V.35 V.36 X.21	Yes	Yes	Yes	No	0.75	200	SSOP/28	$6.96 @1k
MAX3174	Multiprotocol Cable Terminator and Transceiver	0.24	10	1/1	1/1	Yes	RS-232 RS-449 RS-485 RS-530 RS-530A V.10 V.11 V.28 V.35 X.21	Yes	No	Yes	No	0.75	200	SSOP/28	$7.22 @1k

质量和环境数据

MAX3172.pdf

订购型号

型号	状况	推荐替代产品	封装	温度	RoHS/无铅
MAX3172CAI	停止供货	MAX3172CAI+	SSOP；28引脚	0°C至+70°C	参考数据资料
MAX3172CAI+	生产中		SSOP,；28引脚；81.6mm²	0°C至+70°C	RoHS/无铅：无铅
MAX3172CAI+T	生产中		SSOP,；28引脚；81.6mm²	0°C至+70°C	RoHS/无铅：无铅
MAX3172CAI-T	停止供货	MAX3172CAI+T	SSOP；28引脚	0°C至+70°C	参考数据资料
MAX3172EAI+	生产中		SSOP,；28引脚；81.6mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX3172EAI+T	生产中		SSOP,；28引脚；81.6mm²	-40°C至+85°C	RoHS/无铅：无铅