73007

73007 VISHAY

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Vishay SiliconixNew Product Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 www.vishay.com 9-Line SCSI Bus Terminators

FEATURES

/C0068Auto Selection of S/E or LVD SCSI Termination /C00682.7-V to 5.25-V TERMPWR Range /C0068Meets SCSI-1, SCSI-2, SPI-2 (ULTRA-2), SPI-3 (ULTRA-160) and SPI-4 (ULTRA-320) Standards /C0068Differential Failsafe Bias /C0068Thermal Package /C0068On-Chip Thermal Shutdown Circuit /C0068Master/Slave Input /C0068Active Negation /C0068Hot Swap Compatible /C0068Pin Compatible with UCC5630 and UCC5670 /C0068Lead (Pb)-Free QSOP-36 Package

APPLICATIONS

/C0068Disk Array (RAID) /C0068Storage Area Networks (SAN) /C0068Network Attached Storage (NAS) /C0068SCSI Cable /C0068Server and Workstation /C0068Industrial Computers /C0068High-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 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 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 is available in a lead (Pb)-free QSOP-36 package for operation over the temperature range of 0 to 70 /C0095C. FUNCTIONAL BLOCK DIAGRAM See Functional Diagrams (Page 6) for detailed descriptions of SCSI Terminator Impedance Circuits in LVD and S/E modes of operation. 35 34 33 36 Heat Sink GND PinsGND REG 1.3 V 8 9 10 26 27 28 118 Enable Current Limited Source/Sink Regulator Comparators V /C0116 0.5 = S/E 0.7 /C0116 V /C01161.9 = LVD V /C0117 2.4 = HPD HPD LVD S/E TERMPWR Current Limited Source/Sink Regulator Mode Control And Enable/Disable Circuitry SCSI Terminator Impedance Circuits10 /C0109A MODE DISABLE DIFFS MSTR/SLV T1N T1P T9P T9N

Vishay Siliconix New Product www.vishay.com Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 TYPICAL APPLICATION DIAGRAM T1N T1P T9P T9N DIFFS 50 k/C0087 MODE TERMPWR MSTR/SLV DISABLE REG GND 4.7 /C0109F 4.7 /C0109F T1N T1P T9P T9N DIFFS 50 k/C0087 MODE TERMPWR MSTR/SLV DISABLE REG GND 4.7 /C0109F 4.7 /C0109F T1N T1P T9P T9N DIFFS MODE TERMPWR MSTR/SLV DISABLE REG GND 4.7 /C0109F T1N T1P T9P T9N DIFFS MODE TERMPWR MSTR/SLV DISABLE REG GND 4.7 /C0109F T1N T1P T9P T9N DIFFS MODE TERMPWR MSTR/SLV DISABLE REG GND 4.7 /C0109F T1N T1P T9P T9N DIFFS MODE TERMPWR MSTR/SLV DISABLE REG GND 4.7 /C0109F SiP5630 SiP5630 SiP5630 SiP5630 SiP5630 SiP5630 SCSI BUS TERMPWR 4.7 /C0109F4.7 /C0109F GROUND DIFFSENS LOW BYTE DATA (8) + PARITY HIGH BYTE DATA (8) + PARITY CONTROL LINES (9) /C0068 /C0068 /C0068/C0068 /C0068 /C0068/C0068 /C0068 /C0068 /C0068 /C0068 /C0068/C0068 /C0068 /C0068/C0068 /C0068 /C0068

Vishay SiliconixNew Product Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 www.vishay.com ABSOLUTE MAXIMUM RATINGS (ALL VOLTAGES REFERENCED TO GND = 0 V) 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) SPECIFICATIONS Test Conditions Unless Specified Limits Parameter Symbol TERMPWR = 2.7 to 5.25 V, DISABLE = 0 V TA = TJ = 0 to 70 /C0095C Mina Typb Maxa Unit SCSI Channels (T1 to T9), LVD Operation Differential Impedance ZDIFF 100 105 110 /C0087Common Mode Impedance ZCM MODE = 1 3 V 120 140 160 /C0087 Differential Failsafe Bias VDIFF MODE = 1.3 V 100 112 125 mV Common Mode Bias VCM 1.15 1.25 1.35 V SCSI Channels (T1 to T9), S/E Operation Impedance ZS/E MODE = 0 V 100 108 116 /C0087 Bias Voltage VS/E MODE = 0 V 2.5 2.7 3.0 V Output Current IS/E MODE = 0 V Channel Voltage = 0.2 V −25.4 −23 −20.5 mAOutput Current IS/E MODE = 0 V Channel Voltage = 0.5 V −22.4 mA GND Driver Impedance ZGS MODE = 0 V, ITEST = 10 mA 30 60 /C0087 SCSI Channels (T1 to T9), Termination Disabled Channel Leakagec IL Channel Voltage = 0 to 5 V −500 0 500 nA Channel Capacitancec, d CT Referenced to GND 3 pF SCSI Regulator, LVD Mode Source Current ISO(LVD) REG = 0 V −800 −450 −250 mASink Current ISI(LVD) REG = 4 V 200 300 800 mA SCSI Regulator, S/E Mode Source Current ISO(S/E) REG = 0 V −800 −450 −250 mASink Current ISI(S/E) REG = 4 V 200 300 800 mA DIFFSENS Regulator Output Voltage VDIFFS −5 mA /C0118 IDIFFS /C0118 50 /C0109A 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 /C0109A DISABLE Input Input Threshold VTH(DIS) 0.8 1.0 1.2 V Input Current IIN(DIS) 0 V /C0118 VDISABLE /C0118 1.2 V −30 −10 −3 /C0109AInput Current IIN(DIS) VDISABLE /C0117 1.2 V −30 0 10 /C0109A

Vishay Siliconix New Product www.vishay.com Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 SPECIFICATIONS LimitsTest Conditions Unless Specified TERMPWR = 2.7 to 5.25 V, DISABLE = 0 V TA = TJ = 0 to 70 /C0095CParameter UnitMaxaTypbMina Test Conditions Unless Specified TERMPWR = 2.7 to 5.25 V, DISABLE = 0 V TA = TJ = 0 to 70 /C0095CSymbol MODE Input S/E to LVD Threshold VTH(S/E) 0.5 0.6 0.7 VLVD to HPD Threshold VTH(HPD) 1.9 2.1 2.4 V Input Current IIN(MODE) 0 V/C0118 VMODE /C0118 5.25 V −1 0 1 /C0109A MASTER/SLAVE Input TERMPWR = 2.7 V 0.8 1.4 1.9 Input Threshold VTH(M/S) TERMPWR = 3.3 V 1 1.7 2.3 Vp TH(M/S) TERMPWR = 5.25 V 1.5 2.6 3.7 Input Current IIN(M/S) 0 V/C0118 VM/S /C0118 TERMPWR −1 0 1 /C0109A STATUS Output Pins (LVD, S/E and HPD) Source Current ISO(STAT) TERMPWR = 2.7 V, VPIN = 2.4 V −10 −5 mASink Current ISI(STAT) VPIN = 0.4 V 3 6 mA THERMAL Shutdown Shutdown Temperatured TOFF Rising Temperature 160 /C0095CHysteresisd THYS 10 /C0095C 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 mA HPD Mode IDD(HPD) MODE = 3 V 10 20 Disabled Mode IDD(DIS) DISABLE = 3 V 500 1000 /C0109A Notes a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum is used in this data sh eet. 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. V CM applied simultaneously to Line PLUS and Line MINUS pins of all SCSI channels T1-T9. f. V CM applied simultaneously to Line MINUS pins of all SCSI channels T1-T9.

SiP5630 (QSOP-36) T1N T2N T5N

1 TERMPWR 36REG

2 HPD 35N/C

4 S/E 33T1P

5 T9N 32

6 T9P 31T2P

8 T8P 29H/S GND

9 H/S GND 28H/S GND

10 H/S GND 27H/S GND

11 H/S GND 26T3P

12 T7N 25T3N

13 T7P 24T4P

14 T6N 23T4N

15 T6P 22T5P

16 MODE 21

17 DIFFS 20DISABLE

18 MSTR/SLV 19GND

Vishay SiliconixNew Product Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 www.vishay.com PIN CONFIGURATION AND ORDERING INFORMATION

ORDERING INFORMATION

Part Number Temperature Range Marking SiP5630CG-T1—E3 0 to 70/C0095C SiP5630CG PIN DESCRIPTION Pin Name Function 1 REG SCSI Regulator Output. Connect a 4.7-/C0109F bypass capacitor from this pin to GND. 2, 3 N/C No Connect. 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. 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 /C0109A) 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. 19 MSTR/SLV 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. 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-k/C0087/4.7/C0109F low pass filter to meet SPI-3 mode change requirements. 33, 34, 35 S/E, LVD, HPD Status Output Pins. Respective pins are high when the terminator detects the corresponding mode of operation on the SCSI Bus, and low otherwise. 36 TERMPWR Power for the Terminator IC. Connect to the TERMPWR lines on the SCSI Bus and decouple with a 4.7-/C0109F capacitor to GND at the IC.

Vishay Siliconix New Product www.vishay.com Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 FUNCTIONAL BLOCK DIAGRAM/C0266LVD OPERATION 35 34 33 REG 1.3 V Enable Current Limited Source/Sink Regulator Comparators V /C0116 0.5 = S/E 0.7 /C0116 V /C01161.9 = LVD V /C0117 2.4 = HPD HPD LVD S/E Current Limited Source/Sink Regulator Mode Control And Enable/Disable Circuitry 10 /C0109A MODE DISABLE DIFFS MSTR/SLV T1N T1P T9P T9N 1.25 V 1.07 mA52.5 /C0087 115 /C0087 1.07 mA 52.5 /C0087 1.07 mA52.5 /C0087 115 /C0087 1.07 mA 52.5 /C0087 FUNCTIONAL BLOCK DIAGRAM/C0266S/E OPERATION 35 34 33 REG 1.3 V Enable Current Limited Source/Sink Regulator Comparators V /C0116 0.5 = S/E 0.7 /C0116 V /C01161.9 = LVD V /C0117 2.4 = HPD HPD LVD S/E Current Limited Source/Sink Regulator Mode Control And Enable/Disable Circuitry 10 /C0109A MODE DISABLE DIFFS MSTR/SLV T1N T1P T9P T9N 2.7 V 108 /C0087 30 /C0087 108 /C0087 30 /C0087

Vishay SiliconixNew Product Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 www.vishay.com 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. 5 ns/div TEMPWR = 5.25 V 5 ns/div TEMPWR = 2.70 V

0.1 V/div

40 Mbyte/sec data transfer. Top panel DB10 T- signals. Bottom panel DB9 T− signals. 50 ns/div TEMPWR = 5.25 V 50 ns/div TEMPWR = 2.70 V

0.5 V/div

Vishay Siliconix New Product www.vishay.com Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 LVD TYPICAL CHARACTERISTICS 100 105 110 115 120 125 100 102 104 106 108 110 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 0 1 02 03 04 05 06 07 0 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 100 102 104 106 108 110 0 1 02 03 04 05 06 07 0 100 105 110 115 120 125 0 1 02 03 04 05 06 07 0 Differential Fail-Safe Bias vs. TERMPWR Differential Impedance vs. TERMPWR Common Mode Bias vs. TERMPWR Common Mode Bias vs. T emperature Temperature (/C0095C) Differential Impedance (/C0087) Differential Impedance (/C0087) Differential Bias (mV)Common Mode Bias (V) Temperature (/C0095C) Temperature (/C0095C) TERMPWR (V) TERMPWR (V) Common Mode Bias (V) Differential Bias (mV) Differential Fail-Safe Bias vs. Temperature Differential Impedance vs. Temperature 70/C0095C 25/C0095C 0/C0095C 2.7 V 3.5 V 5.25 V TERMPWR 70/C0095C 25/C0095C 0/C0095C 2.7 V 3.5 V 5.25 V TERMPWR 70/C0095C 25/C0095C 0/C0095C 2.7 V 3.5 V 5.25 V TERMPWR

Vishay SiliconixNew Product Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 www.vishay.com SE TYPICAL CHARACTERISTICS 2.5 2.6 2.7 2.8 2.9 3.0 0 1 02 03 04 05 06 07 0 2.5 2.6 2.7 2.8 2.9 3.0 100 102 104 106 108 110 112 114 116 0 1 02 03 04 05 06 07 0 −25.4 −24.9 −24.4 −23.9 −23.4 −22.9 −22.4 −21.9 −21.4 −20.9 0 1 02 03 04 05 06 07 0 −25.4 −24.9 −24.4 −23.9 −23.4 −22.9 −22.4 −21.9 −21.4 −20.9 100 102 104 106 108 110 112 114 116 Output Current @ 0.2 V vs. TERMPWR Impedance vs. TERMPWR TERMPWR (V) Bias vs. TERMPWR Bias vs. T emperature Temperature (/C0095C) Impedance (/C0087) Temperature (/C0095C) Temperature (/C0095C) TERMPWR (V) TERMPWR (V) Bias (V) Current (mA) Impedance vs. Temperature Impedance (/C0087) Output Current @ 0.2 V vs. Temperature Current (mA)Bias (V) 70/C0095C 25/C0095C 0/C0095C 2.7 V 3.5 V 5.25 V TERMPWR 70/C0095C 25/C0095C 0/C0095C 2.7 V 3.5 V 5.25 V TERMPWR 70/C0095C 25/C0095C 0/C0095C 2.7 V 3.5 V 5.25 V TERMPWR

Vishay Siliconix New Product www.vishay.com Document Number: 73007 S-41263—Rev. A, 05-Ju1-04 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-/C0087 differential impedance and 112-mV differential bias between each T−/T+ pair of terminator lines. In S/E mode the SiP5630 provides 108 /C0087- 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 an external R/C low pass filter. 50 k /C0087/4.7 /C0109F 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.