Application*Data Networking *PCI Cards
*CSU and DSU * Telecommunications
*Data RoutersPinout
Specifications(All voltages referenced to GND unless otherwise noted.)
Supply Voltages
VCC...........................................................................-0.3V to +4V
V+ (Note 1) ..............................................................-0.3V to +7V
V- (Note 1) ...............................................................+0.3V to -7V
V+ to V- (Note 1) ...................................................................13V
Logic Input Voltages
M0, M1, M2, DCE/DTE, INVERT, T4IN ........................-0.3V to +6V
Logic Output Voltages
R4OUT........................................................-0.3V to (VCC + 0.3V)
Short-Circuit Duration................................................Continuous
Transmitter Outputs
T4OUT ....................................................................-15V to +15V
Short-Circuit Duration ...........................................................60s
Receiver Input
R4INA ......................................................................-15V to +15V
Termination Network Inputs (applied individually)
R_A, R_B ..................................................................-15V to +15V
Continuous Power Dissipation (TA = +70°C)
28-Pin SSOP (derate 9.52mW/°C above +70°C) .............762mW
Operating Temperature Range
MAX3172CAI/MAX3174CAI ......................................0°C to +70°C
Junction Temperature........................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ..................................+300°CDescriptionThe 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 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 net- works and expensive relays required for multiprotocol termination. The MAX3172/MAX3174, along with the MAX3170 and MAX3171/MAX3173, form a complete +3.3Vsoftware -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 multipro tocol 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.
MAX3172 Data Sheet
