SP505 WAN Multi-Mode Serial Transceiver +5V Only Operation Seven (7) Drivers and Seven (7) Receivers Driver and Receiver Tri-state Control Internal Transceiver Termination Resistors for RxD 1 60 GND V. and V .35 Protocols SDEN 2 59 SD(b) TREN 3 58 TR(a) Loopback Self-Test Mode RSEN 4 57 GND LLEN 5 56 TR(b) Software Selectable Protocol Selection TTEN 6 55 V CC SCTEN 7 54 RS(a) Interface Modes Supported: LATCH 8 53 GND DEC 9 52 RS(b) 3 RS-232 (V.28) X.2 /RS-422 (V.) DEC 10 51 LL(a) 2 SP505 DEC 11 50 GND 1 EIA-530 (V.0 & V .) EIA-530A (V.0 & V .) DEC 12 49 LL(b) 0 DTR 13 48 V CC RS-449 (V. 0 & V.) V.35 (V.35 & V.28) TxD 14 47 RL(a) TxC 15 46 GND V.36 (V. 0 & V.) RS-485 (un-terminated V. ) RTS 16 45 RL(b) RL 17 44 ST(b) Improved ESD Tolerance for Analog I/Os RLEN 18 43 GND DCD 19 42 ST(a) High Differential Transmission Rates RxC 20 41 V CC SP505A - 0Mbps SP505B - over 6Mbps Compliant to NET/2 and TBR2 Physical Layer Requirements (TUV Test Report NET2/0520 /98) (TUV Test Report CTR2/052 0 /98) DESCRIPTION The SP505 is a monolithic device that supports eight (8) popular serial interface standards for DTE to DCE connectivity. The SP505 is fabricated using a low power BiCMOS process technology, and incorporates a Sipex patented (5,306,954) charge pump allowing +5V only operation. Seven (7) drivers and seven (7) receivers can be configured via software for any of the above interface modes at any time. The SP505 requires no additional external components for compliant operation for all of the eight (8) modes of operation. All necessary termination is integrated within the SP505 and is switchable when V.35 drivers, V.35 receivers, and V. receivers are used. The SP505 can operate as either a DTE or DCE. Additional features with the SP505 include internal loopback that can be initiated in either single-ended or differential modes. While in loopback mode, driver outputs are internally connected to receiver inputs creating an internal signal path convenient for diagnostic testing. This eliminates the need for an external loopback plug. The SP505 also includes a latch enable pin with the driver and receiver address decoder. Tri-state ability for the driver and receiver outputs is controlled by supplying a 4-bit word into the address decoder. Seven (7) drivers and one ( ) receiver in the SP505 include separate enable pins for added convenience. The SP505 is ideal for WAN serial ports in networking equipment such as routers, switches, DSU/CSU s, and other access devices. V.35 EIA-530 WAN Exar Coporation 48720 Kato Road, Fremont CA, 94538 (50) 668-7000 Fax (5 0) 668-70 7 www .exar.com SP505 00 08 308 RI 21 80 CTS ST 22 79 SCT STEN 23 78 DSR LL 24 77 SCT(b) V 25 76 SCT(a) CC + C 26 75 GND 1 V 27 74 V DD CC C + 28 73 V 2 CC GND 29 72 GND C 30 71 RD(b) 1 C 31 70 RD(a) 2 VSS 32 69 DM(b) V 33 68 DM(a) CC GND 34 67 CS(b) RR(a) 35 66 CS(a) RR(b) 36 65 TT(b) RT(a) 37 64 GND RT(b) 38 63 TT(a) IC(a) 39 62 V CC IC(b) 40 61 SD(a)ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation STORAGE CONSIDERATIONS of the device at these ratings or any other above those Due to the relatively large package size of the 80-pin indicated in the operation sections of the specifications quad flat-pack, storage in a low humidity environment below is not implied. Exposure to absolute maximum is preferred. Large high density plastic packages rating conditions for extended periods of time may are moisture sensitive and should be stored in Dry affect reliability. Vapor Barrier Bags. Prior to usage, the parts should V .......................................................................+7V remain bagged and stored below 40C and 60%RH. CC Input Voltages: If the parts are removed from the bag, they should be Logic............................-0.3V to (V +0.5V) used within 48 hours or stored in an environment at CC Drivers.........................-0.3V to (V +0.5V) or below 20%RH. If the above conditions cannot be CC Receivers........................................5.5V followed, the parts should be baked for four hours at Output Voltages: 25C in order remove moisture prior to soldering. Logic............................-0.3V to (V +0.5V) Exar ships the 80-pin QFP in Dry Vapor Barrier Bags CC Drivers................................................ 5V with a humidity indicator card and desiccant pack. The Receivers.....................-0.3V to (V +0.5V) humidity indicator should be below 30%RH. CC Storage Temperature.......................-65C to +150C Power Dissipation.........................................2000mW Package Derating: .................................................46 C/W JA ................................................. 6 C/W JC ELECTRICAL CHARACTERISTICS T = +25C and V = +4.75V to +5.25V unless otherwise noted. A CC PARAMETER MIN TYP MAX UNITS CONDITIONS LOGIC INPUTS V 0.8 Volts IL V 2.0 Volts IH LOGIC OUTPUTS V 0.4 Volts I = -3.2mA OL OUT V 2.4 Volts I = .0mA OH OUT V.28 DRIVER OUTPUT DC PARAMETERS Open Circuit Voltage +/-5 Volts Per Figure Loaded Voltage +/-5.0 +/-5 Volts Per Figure 2 Short-Circuit Current +/- 00 mA Per Figure 4 Power-Off Impedance 300 Per Figure 5 V.28 DRIVER OUTPUT AC PARAMETERS (Vcc = +5V for AC Parameters) Transition Time .5 s Per Figure 6 +3V to -3V Instantaneous Slew Rate 30 V/ s Per Figure 3 Propagation Delay t 0.5 5 s PHL Propagation Delay t 0.5 5 s PLH Max. Transmission Rate 20 230 kbps V.28 RECEIVER INPUT DC PARAMETERS Input impedance 3 7 k Per Figure 7 Open-Circuit Bias +2.0 Volts Per Figure 8 HIGH Threshold .7 3.0 Volts LOW Threshold 0.8 .2 Volts Exar Coporation 48720 Kato Road, Fremont CA, 94538 (50) 668-7000 Fax (5 0) 668-707 www .exar.com SP505 00 08 308 2