SiP5630 New Product Vishay Siliconix 9-Line SCSI Bus Terminators D Pin Compatible with UCC5630 and UCC5670 D Lead (Pb)-Free QSOP-36 Package FEATURES D Auto Selection of S/E or LVD SCSI Termination D 2.7-V to 5.25-V TERMPWR Range D Meets SCSI-1, SCSI-2, SPI-2 (ULTRA-2), SPI-3 (ULTRA-160) and SPI-4 (ULTRA-320) Standards D Differential Failsafe Bias D Thermal Package D On-Chip Thermal Shutdown Circuit D Master/Slave Input D Active Negation D Hot Swap Compatible APPLICATIONS D D D D D D D Disk Array (RAID) Storage Area Networks (SAN) Network Attached Storage (NAS) SCSI Cable Server and Workstation Industrial Computers High-End Personal Computers DESCRIPTION The SiP5630 provides active bus termination suitable for all SCSI bus operational modes from SCSI-1 through SPI-4 (Ultra 320). The termination includes impedance matching of the SCSI bus to minimize signal reflections from the end of the bus, as well as required SCSI bus biasing for either S/E (Single Ended) or LVD (Low Voltage Differential) operation. The SiP5630 senses the operational state of the SCSI bus via the DIFFSENS bus signal, and automatically switches to S/E or LVD operation as required. It cannot be used on an HPD (High Power Differential) SCSI bus, and goes into high impedance mode when the voltage on the DIFFSENS line indicates HPD operation. The SiP5630 also presents high impedance to the SCSI bus if the DISABLE pin is asserted, or if TERMPWR is removed from the IC. The SiP5630 has nine (9) output channels (T1-T9). Each output channel provides termination for one SCSI data signal, parity signal or control signal. Two SiP5630 ICs provide complete termination for a narrow SCSI Bus; three ICs provide complete termination for a wide SCSI bus. The SiP5630 is available in a lead (Pb)-free QSOP-36 package for operation over the temperature range of 0 to 70 _C. FUNCTIONAL BLOCK DIAGRAM HPD LVD S/E TERMPWR 35 34 33 36 Comparators MODE Enable V t 0.5 = S/E 0.7 t V t1.9 = LVD V u 2.4 = HPD 21 Current Limited Source/Sink Regulator 10 mA DISABLE Current Limited Source/Sink Regulator 1.3 V Mode Control And Enable/Disable Circuitry 17 18 8 GND Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 9 10 26 27 Heat Sink GND Pins 28 1 REG 20 DIFFS 19 MSTR/SLV 5 T1N 4 T1P 32 T9N 31 T9P SCSI Terminator Impedance Circuits See Functional Diagrams (Page 6) for detailed descriptions of SCSI Terminator Impedance Circuits in LVD and S/E modes of operation. www.vishay.com 1 SiP5630 New Product Vishay Siliconix TYPICAL APPLICATION DIAGRAM SCSI BUS TERMPWR SiP5630 TERMPWR T1N T1P T1P DISABLE LOW BYTE DATA (8) + PARITY T9N 50 kW GND DISABLE T9P DIFFSENS DIFFS REG MSTR/SLV T9N T9P 4.7 mF TERMPWR DDD DDD MSTR/SLV SiP5630 T1N DIFFS REG 50 kW MODE MODE 4.7 mF 4.7 mF 4.7 mF 4.7 mF SiP5630 SiP5630 T1N TERMPWR T1N T1P DISABLE T1P CONTROL LINES (9) T9N T9N T9P T9P DIFFS REG GND GND T1N T1P T1P HIGH BYTE DATA (8) + PARITY DDD REG 4.7 mF REG GND 4.7 mF SiP5630 T1N DDD DISABLE DISABLE MODE SiP5630 MSTR/SLV MSTR/SLV DIFFS MODE TERMPWR TERMPWR DDD DDD MSTR/SLV 4.7 mF 4.7 mF GND T9N T9N T9P T9P DIFFS DIFFS MODE MODE TERMPWR MSTR/SLV DISABLE REG GND 4.7 mF GROUND www.vishay.com 2 Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 SiP5630 New Product Vishay Siliconix ABSOLUTE MAXIMUM RATINGS (ALL VOLTAGES REFERENCED TO GND = 0 V) TERMPWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V TXN, TXP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to 6 V MODE, DISABLE, M/S, STATUS . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to 6 V Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to 125 _C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 _C 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. RECOMMENDED OPERATING RANGE (ALL VOLTAGES REFERENCED TO GND = 0 V) TERMPWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7 V to 5.25 V Operating Temperature Range (TA)) . . . . . . . . . . . . . . . . . . . . . . . . 0 to 70 _C SPECIFICATIONS Test Conditions Unless Specified Parameter TERMPWR = 2.7 to 5.25 V, DISABLE = 0 V TA = TJ = 0 to 70 _C Limits Mina Typb ZDIFF 100 105 110 ZCM 120 140 160 Symbol Maxa Unit SCSI Channels (T1 to T9), LVD Operation Differential Impedance Common Mode Impedance Differential Failsafe Bias VDIFF Common Mode Bias VCM MODE = 1.3 13V W 100 112 125 mV 1.15 1.25 1.35 V 100 108 116 W 2.5 2.7 3.0 V Channel Voltage = 0.2 V −25.4 −23 −20.5 Channel Voltage = 0.5 V −22.4 30 60 W 0 500 nA SCSI Channels (T1 to T9), S/E Operation Impedance ZS/E Bias Voltage VS/E Output Current IS/E GND Driver Impedance ZGS MODE = 0 V MODE = 0 V MODE = 0 V, ITEST = 10 mA mA SCSI Channels (T1 to T9), Termination Disabled Channel Leakagec IL Channel Voltage = 0 to 5 V Channel Capacitancec, d CT Referenced to GND Output Voltage REG(LVD) 0.5 V v VCM v 2.0 Ve 1.15 1.25 1.35 Source Current ISO(LVD) REG = 0 V −800 −450 −250 Sink Current ISI(LVD) REG = 4 V 200 300 800 Output Voltage REG(S/E) 0.2 V v VCM v 4.0 Vf 2.5 2.7 3.0 Source Current ISO(S/E) REG = 0 V −800 −450 −250 Sink Current ISI(S/E) REG = 4 V 200 300 800 Output Voltage VDIFFS −5 mA v IDIFFS v 50 mA 1.2 1.3 1.4 V Source Current ISO(DIFFS) VDIFFS = 0 V −15 −8 −5 mA Sink Current ISI(DIFFS) VDIFFS = 2.75 V 50 100 200 mA 0.8 1.0 1.2 V 0 V v VDISABLE v 1.2 V −30 −10 −3 VDISABLE u 1.2 V −30 0 10 −500 3 pF SCSI Regulator, LVD Mode V mA SCSI Regulator, S/E Mode V mA DIFFSENS Regulator DISABLE Input Input Threshold Input Current Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 VTH(DIS) IIN(DIS) mA www.vishay.com 3 SiP5630 New Product Vishay Siliconix SPECIFICATIONS Test Conditions Unless Specified Parameter Symbol TERMPWR = 2.7 to 5.25 V, DISABLE = 0 V TA = TJ = 0 to 70 _C Limits Mina Typb Maxa Unit MODE Input S/E to LVD Threshold VTH(S/E) 0.5 0.6 0.7 LVD to HPD Threshold VTH(HPD) 1.9 2.1 2.4 Input Current IIN(MODE) 0 Vv VMODE v 5.25 V −1 0 1 TERMPWR = 2.7 V 0.8 1.4 1.9 TERMPWR = 3.3 V 1 1.7 2.3 TERMPWR = 5.25 V 1.5 2.6 3.7 0 Vv VM/S v TERMPWR −1 0 1 −10 −5 V mA MASTER/SLAVE Input Input p Threshold Input Current VTH(M/S) IIN(M/S) V mA STATUS Output Pins (LVD, S/E and HPD) Source Current ISO(STAT) TERMPWR = 2.7 V, VPIN = 2.4 V Sink Current ISI(STAT) VPIN = 0.4 V Shutdown Temperatured TOFF Rising Temperature Hysteresis d THYS 3 6 mA THERMAL Shutdown 160 _C 10 TERMPWR Supply LVD Mode IDD(LVD) MODE = 1.3 V, Channels Unloaded 20 30 S/E Mode IDD(S/E) MODE = 0 V, Channels Unloaded 10 20 HPD Mode IDD(HPD) MODE = 3 V 10 20 Disabled Mode IDD(DIS) DISABLE = 3 V 500 1000 mA mA Notes a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum is used in this data sheet. b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. c. MODE = 3 V and/or DISABLE = 3 V and/or TERMPWR = 0 V. d. Guaranteed by design, not subject to production test. e. VCM applied simultaneously to Line PLUS and Line MINUS pins of all SCSI channels T1-T9. f. VCM applied simultaneously to Line MINUS pins of all SCSI channels T1-T9. www.vishay.com 4 Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 SiP5630 New Product Vishay Siliconix PIN CONFIGURATION AND ORDERING INFORMATION SiP5630 (QSOP-36) ORDERING INFORMATION REG 1 36 TERMPWR N/C 2 35 HPD Part Number Temperature Range Marking N/C 3 34 LVD SiP5630CG-T1—E3 0 to 70_C SiP5630CG T1P 4 33 S/E T1N 5 32 T9N T2P 6 31 T9P T2N 7 30 T8N H/S GND 8 29 T8P H/S GND 9 28 H/S GND H/S GND 10 27 H/S GND T3P 11 26 H/S GND T3N 12 25 T7N T4P 13 24 T7P T4N 14 23 T6N T5P 15 22 T6P T5N 16 21 MODE DISABLE 17 20 DIFFS GND 18 19 MSTR/SLV Top View PIN DESCRIPTION Pin Name 1 REG SCSI Regulator Output. Connect a 4.7-mF bypass capacitor from this pin to GND. 2, 3 N/C No Connect. 4, 6, 11, 13,15, 22, 24, 29, 31 TXP; X = 1...9 Positive Terminator Channel Pins. Provide positive signal line termination in LVD operation, and are connected to GND through low impedance in S/E operation. In HPD, DISABLE, or Power Off condition these pins present high impedance to the SCSI Bus. 5, 7, 12, 14, 16, 23, 25, 30, 32 TXN; X = 1...9 Negative Terminator Channel Pins. Provide negative signal line termination in LVD operation, and line termination for S/E operation. In HPD, DISABLE, or Power Off condition these pins present high impedance to the SCSI Bus. 8, 9, 10, 26, 27, 28 H/S GND Heat Sink Ground. Should be connected to as large a grounded heat sink area on the PC board as is practical. 17 DISABLE Chip Disable. There is a small (nominal 10 mA) pull up current on this pin. Pull this pin to GND to enable Bus Termination. When this pin is left floating or pulled high all SCSI channel pins present high impedance to the SCSI Bus, and the SCSI Regulator and DIFFSENS regulator are both disabled. 18 GND 19 MSTR/SLV 20 DIFFS DIFFSENS Regulator Output. Connect to the DIFFSENS line of the SCSI Bus to bias the mode selection function. 21 MODE SCSI MODE Select Pin. Connect to the DIFFSENS line of the SCSI Bus to sense the present mode of operation on the Bus. Decouple MODE from the DIFFSENS signal with a 50-kW/4.7mF low pass filter to meet SPI-3 mode change requirements. 33, 34, 35 S/E, LVD, HPD 36 TERMPWR Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 Function Electrical ground connection for the terminator IC. Connect to the ground lines of the SCSI Bus Master/Slave. If this pin is tied to TERMPWR the output of the 1.3-V regulator for DIFFSENS is enabled. If this pin is tied to GND the output of the 1.3-V regulator for DIFFSENS is inhibited. Status Output Pins. Respective pins are high when the terminator detects the corresponding mode of operation on the SCSI Bus, and low otherwise. Power for the Terminator IC. Connect to the TERMPWR lines on the SCSI Bus and decouple with a 4.7-mF capacitor to GND at the IC. www.vishay.com 5 SiP5630 New Product Vishay Siliconix FUNCTIONAL BLOCK DIAGRAMLVD OPERATION HPD LVD S/E 35 34 33 Current Limited Source/Sink Regulator 1.3 V Comparators MODE 21 Enable V t 0.5 = S/E 0.7 t V t1.9 = LVD V u 2.4 = HPD Current Limited Source/Sink Regulator 52.5 W 19 MSTR/SLV 5 T1N 4 T1P 32 T9N 31 T9P 20 DIFFS 19 MSTR/SLV 5 T1N 4 T1P 32 T9N 31 T9P 52.5 W 1.07 mA 10 mA Mode Control And Enable/Disable Circuitry 17 DIFFS 1.07 mA 115 W 1.25 V DISABLE 20 52.5 W 1.07 mA 115 W 52.5 W 1.07 mA 1 REG FUNCTIONAL BLOCK DIAGRAMS/E OPERATION HPD LVD S/E 35 34 33 Current Limited Source/Sink Regulator 1.3 V Comparators MODE 21 V t 0.5 = S/E 0.7 t V t1.9 = LVD V u 2.4 = HPD Enable Current Limited Source/Sink Regulator 108 W 2.7 V 30 W 10 mA DISABLE 17 108 W Mode Control And Enable/Disable Circuitry 30 W 1 REG www.vishay.com 6 Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 SiP5630 New Product Vishay Siliconix LVD WAVEFORMS 160 Mbyte/sec data transfer. Top panel DB10 T- and T+ signals. Bottom panel DB9 T− and T+ signals. All bits except DB9 toggling at maximum data rate. TEMPWR = 2.70 V 0.1 V/div 0.1 V/div TEMPWR = 5.25 V 5 ns/div 5 ns/div S/E WAVEFORMS 40 Mbyte/sec data transfer. Top panel DB10 T- signals. Bottom panel DB9 T− signals. 50 ns/div Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 TEMPWR = 2.70 V 0.5 V/div 0.5 V/div TEMPWR = 5.25 V 50 ns/div www.vishay.com 7 SiP5630 New Product Vishay Siliconix LVD TYPICAL CHARACTERISTICS Differential Impedance vs. TERMPWR 0_C 25_C 70_C Differential Impedance (W) 108 TERMPWR 5.25 V 3.5 V 2.7 V 108 106 104 102 100 2.5 Differential Impedance vs. Temperature 110 Differential Impedance (W) 110 106 104 102 100 3.0 3.5 4.0 4.5 5.0 5.5 0 10 20 30 40 50 60 70 Temperature (_C) Differential Fail-Safe Bias vs. TERMPWR Differential Fail-Safe Bias vs. Temperature 125 125 0_C 25_C 70_C 115 110 105 100 2.5 TERMPWR 5.25 V 3.5 V 2.7 V 120 Differential Bias (mV) Differential Bias (mV) 120 115 110 105 100 3.0 3.5 4.0 4.5 5.0 5.5 0 10 20 TERMPWR (V) Common Mode Bias vs. TERMPWR 1.29 Common Mode Bias (V) 1.25 1.24 1.23 1.27 1.26 1.25 TERMPWR 5.25 V 3.5 V 2.7 V 1.24 1.23 1.22 1.22 1.21 1.21 1.20 3.0 3.5 4.0 4.5 TERMPWR (V) 8 70 1.28 1.26 www.vishay.com 60 1.29 1.27 1.20 2.5 50 Common Mode Bias vs. Temperature 1.30 0_C 25_C 70_C 1.28 40 Temperature (_C) Common Mode Bias (V) 1.30 30 5.0 5.5 0 10 20 30 40 50 60 70 Temperature (_C) Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 SiP5630 New Product Vishay Siliconix SE TYPICAL CHARACTERISTICS Impedance vs. TERMPWR 116 0_C 25_C 70_C 114 112 110 108 106 110 108 106 104 104 102 102 100 2.5 TERMPWR 5.25 V 3.5 V 2.7 V 114 Impedance (W) Impedance (W) 112 Impedance vs. Temperature 116 100 3.0 3.5 4.0 4.5 5.0 5.5 0 10 20 TERMPWR (V) Output Current @ 0.2 V vs. TERMPWR 0_C 25_C 70_C −21.9 −21.9 −22.4 Current (mA) Current (mA) 60 70 TERMPWR 5.25 V 3.5 V 2.7 V −21.4 −22.4 −22.9 −23.4 −23.9 −22.9 −23.4 −23.9 −24.4 −24.4 −24.9 −24.9 −25.4 3.0 3.5 4.0 4.5 5.0 5.5 0 10 20 TERMPWR (V) 40 50 60 70 60 70 Bias vs. Temperature 3.0 0_C 25_C 70_C 2.9 30 Temperature (_C) Bias vs. TERMPWR 3.0 TERMPWR 5.25 V 3.5 V 2.7 V 2.9 2.8 Bias (V) Bias (V) 50 −20.9 −21.4 2.7 2.6 2.5 2.5 40 Output Current @ 0.2 V vs. Temperature −20.9 −25.4 2.5 30 Temperature (_C) 2.8 2.7 2.6 2.5 3.0 3.5 4.0 4.5 TERMPWR (V) Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 5.0 5.5 0 10 20 30 40 50 Temperature (_C) www.vishay.com 9 SiP5630 Vishay Siliconix New Product DETAILED OPERATION The SiP5630 is a multimode active terminator IC, which detects the operating mode of the SCSI bus, and switches to the appropriate termination configuration accordingly. Three SiP5630 terminators are required at each end of a wide SCSI bus to terminate 27 lines (18 data, 9 control). In LVD mode the SiP5630 provides 105-W differential impedance and 112-mV differential bias between each T−/T+ pair of terminator lines. In S/E mode the SiP5630 provides 108W- impedance and 2.7-V pull-up on each T− pin, and low impedance to ground on each T+ pin. In HPD mode the SiP5630 disconnects from the bus and presents high impedance to all T−/T+ lines. Each SiP5630 IC has a 1.3-V DIFFSENS Regulator output that can be used to drive the DIFFSENS line of a SCSI bus. Since only one DIFFSENS regulator is required at each end of the SCSI bus each SiP5630 includes a MASTER/SLAVE pin to enable or disable its DIFFSENS regulator. The DIFFSENS regulator attempts to drive the DIFFSENS control signal to 1.3 V, but is current limited so that S/E or HPD devices on the SCSI bus can override the DIFFSENS regulator and put the bus into S/E or HPD mode of operation. The MODE pin senses the operational state of the SCSI bus by detecting the voltage on the DIFFSENS control line through www.vishay.com 10 an external R/C low pass filter. 50 kW/4.7 mF are recommended component values for the filter to meet SPI-3 mode change requirements. Three status lines (S/E, LVD, and HPD) are provided by the SiP5630. One and only one status line is asserted high when its corresponding mode has been detected; the other two status lines are driven low. The mode detection function continues to work even when the SiP5630 is in disconnect mode. The DISABLE pin is used to connect/disconnect the SiP5630. If it is pulled to GROUND the SiP5630 is in connect mode, and operates as a terminator. If it is pulled to TERMPWR or left open the device is in disconnect mode and presents high impedance to the SCSI bus. In disconnect mode the DIFFSENS regulator is disabled but the mode detection circuitry continues to function and the status lines continue to indicate which mode is detected. The SiP5630 operates within SCSI specifications with the TERMPWR voltage between 2.7 V and 5.25 V, which enables it to operate in both 5-V and 3.3-V systems. The 2.7-V lower limit guarantees correct performance in a 3.3-V system. Document Number: 73007 S-41263—Rev. A, 05-Ju1-04