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| FIBRE CHANNEL COAXIAL CABLE DRIVER AND LOOP RESILIENCY CIRCUIT FEATURES s s s s s 425ps propagation delay 1.6V output swings Single +5V operation Internal 75K input pull-down resistors Available in 16-pin SOIC package PRELIMINARY SY10EL1189 DESCRIPTION The SY10EL1189 is a differential receiver, differential transmitter specifically designed to drive coaxial cables. It incorporates the output cable driver capability of the SY10EL89 Coaxial Cable Driver with additional circuitry to multiplex the output cable drive source between the cable receiver or the local transmitter inputs. The multiplexer control circuitry is TTL compatible for ease of operation. The SY10EL1189 is useful as a bypass element for Fibre Channel-Arbitrated Loop (FC-AL) or Serial Storage Architecture (SSA) applications, to create loop style interconnects with fault tolerant, active switches at each device node. This device is particularly useful for back panel applications where small size is desirable. The EL89 style drive circuitry produces swings twice as large as a standard PECL output. When driving a coaxial cable, proper termination is required at both ends of the line to minimize reflections. The 1.6V output swings allow for proper termination at both ends of the cable. Because of the larger output swings, the QT, QT outputs are terminated into the thevenin equivalent of 50 to VCC-3.0V instead of 50 to VCC-2.0V. LOGIC DIAGRAM From Input Cable (ECL Levels) Local Receive Data (ECL Levels) QR QR DR DR VBB 1 Local Transmit Data (ECL Levels) DT DT 0 QT To Output Cable (Enhanced Swing) SEL (TTL) QT PIN NAMES Pin DR/DR Function Differential Input from Receive Cable Buffered Differential Output from Receive Cable Differential Input to Transmit Cable Buffered Differential Output to Transmit Cable Multiplexer Control Signal (TTL) Postive Power Supply Ground Reference Voltage Output PIN CONFIGURATION QR/QR DT/DT QT/QT QR QR VCC NC VCC QT QT VCC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC DR DR GND VBB DT DT SEL SEL VCC GND VBB Top View SOIC TRUTH TABLE SEL L H DR QT DT QT Function Rev.: C Amendment: /2 1 Issue Date: January 2000 Micrel PRELIMINARY SY10EL1189 ABSOLUTE MAXIMUM RATINGS(1) Symbol VCC VIN IOUT TA Tstore VCC Rating Power Supply Voltage (Referenced to GND) Input Voltage (Referenced to GND) Output Current -- Continuous -- Surge Value 0 to +7.0 0 to VCC 50 100 -40 to +85 -50 to +150 4.5 to 5.5 Unit V V mA C C V Operating Temperature Range Storage Temperature Range Operating Voltage Range(2) NOTES: 1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions for extended periods may affect device reliability. 2. Parametric values specified at 4.75 to 5.25V. DC ELECTRICAL CHARACTERISTICS(1) VCC = 5.0V, GND = 0V TA = -40C Symbol VOL VOH VOL VOH ICC VIL VIH IIL IIH VIL VIH IIL IIH Parameter Output LOW Voltage(2,3) TA = 0C Min. 3.05 3.98 TA = +25C Max. 3.37 4.16 TA = +85C Min. 3.05 4.09 Min. Typ. 3.05 3.92 3.23 4.05 Max. 3.35 4.11 Typ. 3.24 4.09 Min. 3.05 4.02 Typ. 3.24 4.11 Max. 3.37 4.19 Typ. 3.25 4.16 Max. Unit 3.41 4.28 V V (QR, QR) Output HIGH Voltage(2,3) (QR, QR) Output LOW Voltage(2,4) (QT, QT) Output HIGH Voltage(2,4) (QT, QT) Quiescent Supply Current(5) Input LOW Voltage(2) (DR,DR & DT,DT) Input HIGH Voltage(2) (DR,DR & DT,DT) Input LOW Current (DR,DR & DT,DT) Input HIGH Current (DR,DR & DT,DT) Input LOW Voltage SEL Input HIGH Voltage SEL Input LOW Current SEL VIN = 500mV Input HIGH Current SEL VIN = 2.7V VIN = VCC Output Reference Voltage(2) 1.94 3.71 20 3.05 3.77 -- 0.5 -- 2.0 -- -- -- 3.57 2.22 3.89 25 -- -- -- -- -- -- -- -- -- 3.63 2.50 4.08 42 3.50 4.11 150 -- 0.8 -- 600 20 100 3.70 1.83 3.79 22 3.05 3.83 -- 0.5 -- 2.0 -- -- -- 3.62 2.12 3.98 26 -- -- -- -- -- -- -- -- -- 3.67 2. 3. 4. 5. 2.41 4.17 47 3.52 4.16 150 -- 0.8 -- 600 20 100 3.73 1.80 3.83 23 3.05 3.87 -- 0.5 -- 2.0 -- -- -- 3.65 2.10 4.02 27 -- -- -- -- -- -- -- -- -- 3.70 2.39 4.20 47 3.52 4.19 150 -- 0.8 -- 600 20 100 3.75 1.77 3.90 25 3.05 3.94 -- 0.5 -- 2.0 -- -- -- 3.69 2.06 4.09 28 -- -- -- -- -- -- -- -- -- 3.75 2.35 4.28 47 3.56 4.28 150 -- 0.8 -- 600 20 100 3.81 V V mA V V A A V V A A V VBB NOTES: 1. 10EL circuits are designed to meet the DC specifications shown in the table after thermal equilibrium has been established. The circuit is mounted in a test socket or mounted on a printed circuit board and transverse air greater than 500lfm is maintained. Values will track 1:1 with the VCC supply. Outputs loaded with 50 to +3.0V. Outputs loaded with 50 to +2.0V. Outputs open circuited. 2 Micrel PRELIMINARY SY10EL1189 AC ELECTRICAL CHARACTERISTICS(1) VCC = 4.75 to 5.25V TA =-40C Symbol tPLH tPHL Parameter Propagation Delay to Output DR QR (Diff) (SE) DR QT (Diff) (SE) DT QT (Diff) (SE) SEL QT, QT QR, QR QT, QT Min. 175 150 250 225 225 200 450 100 150 -- 200 3.00 Typ. 300 300 425 425 400 400 600 275 300 15 -- -- Max. 450 500 650 700 650 725 850 400 550 -- -- 4.35 TA = 0C to 85C Min. 225 175 300 250 275 225 500 125 150 -- 200 3.00 Typ. 325 325 450 450 425 425 650 275 300 15 -- -- Max. 500 550 650 700 650 725 800 400 550 -- -- 4.35 Unit ps Condition Note 2 Note 3 tPLH tPHL tr tf tr tf tskew VPP VCMR Propagation Delay Rise/Fall Time (20% to 80%) Rise/Fall Time (20% to 80%) ps ps ps ps mV V 1.5V to 50% Pt Within Device Skew(4) Minimum Input Common Mode Swing(5) Range(6) NOTES: 1. 10EL circuits are designed to meet the DC specifications shown in the table after thermal equilibrium has been established. The circuit is mounted in a test socket or mounted on a printed circuit board and transverse air greater than 500lfm is maintained. 2. The differential propagation delay is defined as the delay from the crossing points of the differential input signals to the crossing point of the differential output signals. 3. The single-ended propagation delay is defined as the delay from the 50% point of the input signal to the 50% point of the output signal. 4. Duty cycle skew is the difference between tPLH and tPHL propagation delay through a device. 5. Minimum input swing for which AC parameters are guaranteed. 6. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies between VPP Min. and 1.0V. PRODUCT ORDERING CODE Ordering Code SY10EL1189ZC SY10EL1189ZCTR Package Type Z16-2 Z16-2 Operating Range Commercial Commercial 3 Micrel PRELIMINARY SY10EL1189 16 LEAD SOIC .150" WIDE (Z16-2) Rev. 02 MICREL-SYNERGY TEL 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA FAX + 1 (408) 980-9191 + 1 (408) 914-7878 WEB http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. (c) 2000 Micrel Incorporated 4 |
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