Not Recommended for New Design UltraMAX™ ® TM T H E I N F I N I T E P O W E R O F I N N O V A T I O N LX5115A ULTRA 9-CHANNEL SCSI TERMINATOR P R O D U C T I O N D A T A H E E T KEY FEATURES DESCRIPTION lengths and impedances. Frequently, this situation is not controlled by the peripheral or host designer and, when problems occur, they are the first to be made aware of the problem. The LX5115A architecture is much more tolerant of marginal system integrations. Recognizing the needs of portable and configurable peripherals, the LX5115A has a TTL compatible sleep/disable mode. Quiescent current is typically 200µA in this mode, while the output capacitance is also less than 3pF. The obvious advantage of extended battery life for portable systems is inherent in the product's sleep mode feature. Additionally, the disable function permits factory-floor or production-line configurability, reducing inventory and product line diversity costs. Field configurability can also be accomplished without physically removing components which, often times results in field returns due to mishandling. Reduced component counts is also inherent in the LX5115A architecture. Traditional termination techniques require large stabilization and transient protection capacitors of up to 20µF in value and size. The LX5115A architecture does not require these components, allowing all the cost savings associated with inventory, board space, assembly, reliability, and component costs. Ultra-Fast Response For Fast-20 SCSI Applications 35MHz Channel Bandwidth Less Than 3pF Output Capacitance Sleep-Mode Current Of 200µA NO External Compensation Capacitors Implements 8-Bit Or 16-Bit ( Wide) Applications Compatible With Active Negation Drivers Compatible With Passive And Active Terminations Approved For Use With SCSI 1, 2, 3 And Ultra SCSI Hot Swap Compatible Pin-For-Pin Compatible With DS21S07A / 2105 bs ol et e The LX5115A SCSI terminator is part of Linfinity's UltraMAX family of high-performance, adaptive, non-linear mode SCSI products, which are designed to deliver true UltraSCSI performance in SCSI applications. The low voltage BiCMOS architecture employed in its design offers superior performance to older linear passive and active techniques. Linfinity's UltraMAX architecture employs high-speed adaptive elements for each channel, thereby providing the fastest response possible — typically 35MHz, which is 100 times faster than the older linear regulator/terminator approach used by other manufacturers. Products using this older linear regulator approach have bandwidths which are dominated by the output capacitor and which are limited to 500KHz (see further discussion in the Functional Description section). The UltraMAX architecture also eliminates the output compensation capacitor typical in earlier terminator designs. Each is approved for use with SCSI-1, -2, -3, UltraSCSI and beyond — providing the highest performance alternative available today. Another key improvement offered by the LX5115A lies in its ability to insure reliable, error free communications even in systems which do not adhere to recommended SCSI hardware design guidelines, such as the use of improper cable S IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com O PRODUCT HIGHLIGHT TJ (°C) 0 to 70 D PACKAGE ORDER INFO Plastic SOWB Plastic SOIC DW 16-Pin 16-Pin RoHS Compliant / Pb-free Transition DC: 0440 RoHS Compliant / Pb-free Transition DC: 0516 LX5115ACD LX5115ACDW PWP Plastic TSSOP 20-Pin, Power LX5115ACPWP Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX5115ACPWP-TR) Copyright © 2000 Rev. 1.1b, 2005-04-07 MICROSEMI INC. – INTEGRATED PRODUCTS DIVISION 11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570 1 PRODUCT DATABOOK 1996/1997 UltraMAX LX5115A U LT R A 9 - C H A N N E L S C S I T E R M I N AT O R P R O D U C T I O N A B S O L U T E M A X I M U M R AT I N G S D A T A S H E E T (Note 1) Peak Package Solder Reflow Temp. (40 seconds max. exposure).............. 260°C (+0, -5) Continuous Termination Voltage .......................................................................... 10V Continuous Output Voltage Range .............................................................. 0 to 5.5V Continuous Disable Voltage Range .............................................................. 0 to 5.5V Operating Junction Temperature ........................................................... 0°C to 125°C Storage Temperature Range ............................................................. -65°C to +150°C Solder Temperature (Soldering, 10 seconds) ................................................... 300°C PA C K A G E P I N O U T S TERM POWER D0 D1 D2 D3 D4 N.C. GND Note 1. Exceeding these ratings could cause damage to the device. DISABLE N.C. D8 D7 D6 D5 N.C. N.C. 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 bs ol et e D PACKAGE (Top View) T H E R M A L D ATA D & DW Package: RoHS / Pb-free 100% Matte Tin Lead Finish D PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA 120°C/W DW PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA 95°C/W PWP PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA 139°C/W TERM POWER D0 D1 D2 D3 D4 N.C. GND Junction Temperature Calculation: TJ = TA + (PD x θJA). The θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow. 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 DISABLE N.C. N.C. D8 D7 D6 D5 N.C. DW PACKAGE (Top View) TERM POWER HEATSINK/GND D0 D1 D2 D3 D4 HEATSINK/GND N.C. GND 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 DISABLE N.C. HEATSINK/GND N.C. D8 D7 D6 D5 HEATSINK/GND N.C. O PWP PACKAGE (Top View) 2 Copyright © 2000 Rev. 1.2b PRODUCT DATABOOK 1996/1997 UltraMAX LX5115A U LT R A 9 - C H A N N E L S C S I T E R M I N AT O R P R O D U C T I O N D A T A S H E E T R E C O M M E N D E D O P E R AT I N G C O N D I T I O N S Parameter Symbol Termination Voltage High Level Enable Input Voltage Low Level Disable Input Voltage Operating Virtual Junction Temperature Range LX5115AC VTERM VIH VIL (Note 2) Recommended Operating Conditions Min. Typ. Max. Units 3.0 2.5 0 5.5 VTERM 0.8 V V V 0 125 °C bs ol et e Note 2. Range over which the device is functional. ELECTRICAL CHARACTERISTICS Term Power = 4.75V unless otherwise specified. Unless otherwise specified, these specifications apply at the recommended operating ambient temperature of TA = 25°C. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature. Parameter Output High Voltage Symbol VOUT Term Power Supply Current ICC Output Current IOUT Disable Input Current IIN IOL COUT BW ISINK Term Power = 4.75V Term Power = 3.0V All data lines = open All data lines = 0.5V Disable Pin < 0.8V VOUT = 0.5V, Term Power = 4.75V VOUT = 0.5V, Term Power = 3.0V Disable Pin = 4.75V Disable Pin = 0V Disable Pin = < 0.8V, VO = 0.5V VOUT = 0V, frequency = 1MHz VOUT = 4V Min. 2.65 2.1 -21 -17 7 LX5115A Typ. Max. 2.85 2.2 5.5 210 200 -23 -18 80 -12 20 3 35 11 9 225 -24 Units V V mA mA µA mA mA nA µA nA pF MHz mA O Output Leakage Current Capacitance in Disabled Mode Channel Bandwidth Termination Sink Current, per Channel Test Conditions Copyright © 2000 Rev. 1.1b 3 PRODUCT DATABOOK 1996/1997 UltraMAX LX5115A U LT R A 9 - C H A N N E L S C S I T E R M I N AT O R P R O D U C T I O N D A T A S H E E T BLOCK DIAGRAM TERM POWER 24mA CURRENT LIMITING CIRCUIT DATA OUTPUT PIN DB(0) bs ol et e CURRENT BIASING CIRCUIT 2.85V DISABLE PIN 2.0V 1 OF 9 CHANNELS FUNCTIONAL DESCRIPTION O by delivering 24mA on assertion and by imposing 2.85V on Cable transmission theory suggests to optimize signal speed deassertion. In order to disable the device, the Disable pin and quality, the termination should act both as an ideal voltage must be driven logic Low. This mode of operation places reference when the line is released (deasserted) and as an the device in a sleep state where a meager 200µA of quiescent ideal current source when the line is active (asserted). Common current is consumed. Additionally, all active terminators, which consist of Linear Regulators in series with resisPOWER UP / POWER DOWN FUNCTION TABLE outputs are in a Hi-Z (impedance) state. Sleep mode can be used for tors (typically 110Ω), are a compropower conservation or to completely mise. As the line voltage increases, Disable Quiescent Outputs eliminate the terminator from the SCSI the amount of current decreases linLX5115A Current chain. In the second case, termination early by the equation V = I * R. The H Enabled 5.5mA node capacitance is important to LX5115A, with its unique new archiL HI Z 200µA consider. The terminator will appear tecture applies the maximum amount as a parasitic distributed capacitance of current regardless of line voltage Open Enabled 5.5mA on the line, which can detract from bus until the termination high threshold performance. For this reason, the (2.85V) is reached. LX5115A has been optimized to have only 3pF of capacitance Acting as a near ideal line terminator, the LX5115A closely per output in the sleep state. reproduces the optimum case when the device is enabled. An additional feature of the LX5115A is its compatibility with To enable the device the Disable Pin must be pulled Logic active negation drivers. The device handles up to 7mA of sink High or left open. During this mode of operation, quiescent current for drivers which exceed the 2.85V output high. current is 5.5mA and the device will respond to line demands UltraMAX is a trademark of Linfinity Microelectronics Inc. PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time. 4 Copyright © 2000 Rev. 1.1b