MAX3170 19-3330 Rev 0 4/00 +3.3V, Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver General Description Features The MAX3170 is a three-driver/three-receiver multipro- Industrys First +3.3V Single-Supply Transceiver tocol transceiver that operates from a +3.3V single sup- 3V/5V Logic-Compatible I/O ply. The MAX3170, along with the MAX3171/MAX3173 and MAX3172/MAX3174, form a complete software- Certified TBR-1 and TBR-2 Compliant (NET1 and selectable data terminal equipment (DTE) or data com- NET2)Pending Completion munications equipment (DCE) interface port that Supports V.28 (RS-232), V.11 (RS-449/V.36, supports the V.28 (RS-232), V.11 (RS-449/V.36, EIA530, EIA530-A, X.21), and V.35 protocols. The MAX3170 EIA530, EIA530-A, X.21), and V.35 Protocols transceiver carries the high-speed clock and data sig- Software-Selectable DTE/DCE nals, while the MAX3171 or MAX3173 carries the con- Complete DTE/DCE Port with MAX3171/MAX3173 trol signals. The MAX3170 can be terminated by the MAX3172 or MAX3174 software-selectable resistor ter- and MAX3172/MAX3174 mination network or by a discrete termination network. True Fail-Safe Receiver Operation An internal charge pump and proprietary low-dropout Available in Small 28-Pin SSOP Package transmitter output stage allow V.11-, V.28-, and V.35- compliant operation from a +3.3V single supply. A no- 10Mbps Operation (V.11/V.35) cable mode is entered when all mode pins (M0, M1, Requires Only Four Tiny Surface-Mount and M2) are pulled high or left unconnected. In no- cable mode, supply current decreases to 1mA and all Capacitors transmitter and receiver outputs are disabled (high All Transmitter Outputs Are Fault Protected to impedance). Short-circuit limiting and thermal shut- 15V to Survive Cable Miswiring down circuitry protect the drivers against excessive power dissipation. Ordering Information Applications Data Networking PCI Cards PART TEMP. RANGE PIN-PACKAGE CSU and DSU Telecommunications MAX3170CAI 0C to +70C 28 SSOP Data Routers Pin Configuration appears at end of data sheet. Typical Operating Circuit RXD RXC TXC SCTE TXD CTS DSR DCD DTR RTS LL D3 D2 D1 D3 D2 D1 MAX3171 R3 R2 R1 R3 R2 R1 MAX3173 MAX3170 MAX3172 MAX3174 R4 D4 13 5 10 8 22 6 23 20 19 4 1 7 18 16 3 9 17 12 15 11 24 14 2 DB-25 CONNECTOR Maxim Integrated Products 1 For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. CTS B CTS A DSR B DSR A DCD B DCD A DTR B DTR A RTS B RTS A SHIELD SG LL A RXD B RXD A RXC B RXC A TXC B TXC A SCTE B SCTE A TXD B TXD A+3.3V, Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND unless otherwise noted.) Transmitter Outputs Supply Voltages T OUT ...............................................................-15V to +15V V ......................................................................-0.3V to +4V Short-Circuit Duration ........................................................60s CC V+ (Note 1)..........................................................-0.3V to +7V Receiver Inputs V- (Note 1) ...........................................................+0.3V to -7V R IN ..................................................................-15V to +15V V+ to V- (Note 1) ...............................................................13V Continuous Power Dissipation (T = +70C) A Logic Input Voltages 28-Pin SSOP (derate 11.1mW/C above +70C) ........889mW M0, M1, M2, DCE/DTE, T IN...............................-0.3V to +6V Operating Temperature Range Logic Output Voltages MAX3170CAI .....................................................0C to +70C R OUT...................................................-0.3V to (V + 0.3V) Storage Temperature Range ............................-65C to +150C CC Short-Circuit Duration............................................Continuous Lead Temperature (soldering, 10s) ................................+300C Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +3.3V 5%, C1 = C2 = 1F, C3 = C4 = 3.3F, T = T to T , unless otherwise noted. Typical values are at T = +25C CC A MIN MAX A and V = +3.3V.) CC PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC CHARACTERISTICS V.11 mode 190 250 V.11 mode with no load 3 7 V.35 mode 160 210 Supply Current (DCE Mode) (Digital Inputs = GND or V ) I V.35 mode with no load 20 40 mA CC CC (All Outputs Static) V.28 mode 10 20 V.28 mode with no load 4 7 No-cable mode 0.8 2 V.11 mode, full load 410 Internal Power Dissipation P V.35 mode, full load 510 mW D (DCE Mode) V.28 mode, full load 15 V.11 mode 4 V.35 mode 4.25 V+ Output Voltage (DCE Mode) V+ V (Full Load) V.28 mode 5.55 No-cable mode 5 V.11 mode -4.1 V.35 mode -3.7 V- Output Voltage (DCE Mode) V- V (Full Load) V.28 mode -5.45 No-cable mode -4.25 Charge-Pump Enable Time Delay until V+ and V- specifications met 1 ms LOGIC INPUTS (M0, M1, M2, DCE/DTE, T IN) Input High Voltage V 2.0 V IH Input Low Voltage V 0.8 V IL I T IN 1 IN Logic Input Current I M0, M1, M2, DCE/ DTE = V 1 A IH CC I M0, M1, M2, DCE/ DTE = GND 30 50 100 IL 2 MAX3170