MXL1543B TXD A (103) TXD B SCTE A (113) SCTE B TXC A (114) TXC B RXC A (115) RXC B RXD A (104) RXD B SG (102) SHIELD (101) RTS A (105) RTS B DTR A (108) DTR B DCD A (107) DCD B DSR A (109) DSR B CTS A (106) CTS B LL A (141) 19-3444 Rev 0 10/04 +5V Multiprotocol, 3Tx/3Rx, Software- Selectable Clock/Data Transceivers General Description Features The MXL1543B is a three-driver/three-receiver multipro- MXL1543B, MXL1544/MAX3175, and MXL1344A tocol transceiver that operates from a +5V single sup- Chipset Is Pin Compatible with LTC1543, ply. The MXL1543B, along with the MXL1544/MAX3175 LTC1544, and LTC1344A and the MXL1344A, form a complete software-selec- table data terminal equipment (DTE) or data communi- Supports RS-232, RS-449, EIA-530, EIA-530A, cation equipment (DCE) interface port that supports the V.35, V.36, and X.21 V.28 (RS-232), V.10/V.11 (RS-449/V.36, EIA-530, EIA- Software-Selectable Cable Termination Using the 530A, X.21), and V.35 protocols. The MXL1543B trans- ceivers carry the high-speed clock and data signals MXL1344A while the MXL1544/MAX3175 carry the control signals. Complete DTE or DCE Port with MXL1544/ The MXL1543B can be terminated by the MXL1344A MAX3175, and MXL1344A software-selectable resistor termination network or by discrete termination networks. +5V Single-Supply Operation An internal charge pump and a proprietary low-dropout 0.5A No-Cable Mode transmitter output stage allow V.11- , V.28- , and V.35- compliant operation from a +5V single supply. A no- TUV-Certified NET1/NET2 and TBR1/TBR2- cable mode is entered when all mode pins (M0, M1, Compliant and M2) are pulled high or left unconnected. In no- cable mode, supply current decreases to 0.5A and all transmitter and receiver outputs are disabled (high impedance). Short-circuit current limiting and thermal Ordering Information shutdown circuitry protect the drivers against excessive power dissipation. PART TEMP RANGE PIN-PACKAGE Applications MXL1543BCAI 0 to +70C 28 SSOP Data Networking PCI Cards Pin Configuration appears at end of data sheet. CSU and DSU Telecommunications Equipment Data Routers Typical Operating Circuit LL CTS DSR DCD DTR RTS RXD RXC TXC SCTE TXD MXL1544 MXL1543B D4 D3 D2 D1 D3 D2 D1 R4 R3 R2 R1 R3 R2 R1 MAX3175 MXL1344A 18 13 5 10 8 22 6 23 20 19 4 1 7 16 3 9 17 12 15 11 24 14 2 DB-25 CONNECTOR Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.+5V Multiprotocol, 3Tx/3Rx, Software- Selectable Clock/Data Transceivers ABSOLUTE MAXIMUM RATINGS All Voltages Referenced to GND Unless Otherwise Noted. Receiver Input Supply Voltages R IN T3OUT /R1IN ..........................................-15V to +15V V .......................................................................-0.3V to +6V R IN A to R IN B..............................-15V to 0V or 0V to +15V CC V ....................................................................-0.3V to +7.3V Continuous Power Dissipation (T = +70C) DD A V .....................................................................+0.3V to -6.5V 28-Pin SSOP (derate 9.5mW/C above +70C) ...........762mW EE V to V (Note 1)................................................................13V Operating Temperature Range DD EE Logic Input Voltages MXL1543BCAI .....................................................0C to 70C M0, M1, M2, DCE/DTE, T IN................................-0.3V to +6V Junction Temperature .......................................................150C Logic Output Voltages Storage Temperature Range ...........................-65C to +150C R OUT....................................................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) ...............................+300C CC Transmitter Outputs T OUT , T3OUT /R1IN .....................................-15V to +15V Short-Circuit Duration............................................Continuous Note 1: V and V absolute difference cannot exceed 13V. DD EE 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 = +5.0V, C1 = C2 = C4 = 1F, C3 = C5 = 4.7F, (Figure 10), T = T to T . Typical values are at T = +25C, unless other- CC A MIN MAX A wise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC CHARACTERISTICS V Operating Range V 4.75 5.25 V CC CC RS-530, RS-530A, X.21, no load 13 RS-530, RS-530A, X.21, full load 100 130 Supply Current V.35 mode, no load 20 (DCE Mode) mA (Digital Inputs = GND or I V.35 mode, full load 126 170 CC V ) CC V.28 mode, no load 20 (Transmitter Outputs Static) V.28 mode, full load 40 75 No-cable mode 0.5 10 A RS-530, RS-530A, X.21, full load 230 Internal Power Dissipation P mW V.35 mode, full load 600 D (DCE Mode) V.28 mode, full load 140 Any mode (except no-cable mode), no load 6.4 6.8 Positive Charge-Pump V V V.28 mode, with load 6.4 6.8 DD Output Voltage V.28, V.35 modes, with load, I = 10mA 6.4 6.8 DD V.28, V.35, no load -5.6 V.28 mode, full load -5.6 -5.4 Negative Charge-Pump V V EE Output Voltage V.35 mode, full load -5.6 -5.4 RS-530, RS-530A, X.21, full load -5.6 -5.4 Supply Rise Time t No-cable mode or power-up to turn on 500 s r LOGIC INPUTS (M0, M1, M2, DCE/DTE, T1IN, T2IN, T3IN) Input High Voltage V 2.0 IH V Input Low Voltage V 0.8 IL T1IN, T2IN, T3IN 10 Logic Input Current I M0, M1, M2, DCE/DTE = GND -100 -50 -30 A IN M0, M1, M2, DCE/DTE = V 10 CC 2 MXL1543B