Micrel, Inc. 3.3V/5V 2.5GHz PECL/ECL 1:4 FANOUT BUFFER WITH 2:1 INPUT MUX ECL ProTM SY100EP15V ECL ProTM SY100EP15V FEATURES High-speed 1:4 PECL/ECL fanout buffer 2:1 multiplexer input Guaranteed AC parameters over temp/voltage: * > 2.5GHz fMAX (toggle) * < 225ps rise/fall times * < 25ps within device skew * < 425ps propagation delay (CLK-to-Q) Low jitter design: * < 1psRMS cycle-to-cycle jitter * < 20psPP total jitter Flexible power supply: 3.3V/5V Wide operating temperature range: -40C to +85C VBB reference for AC-coupled or single-ended applications Output enable/disable function 100K PECL/ECL compatible logic Input accepts PECL/LVPECL/ECL/HSTL logic levels Available in a 16-pin TSSOP package ECL ProTM DESCRIPTION The SY100EP15V is a high-speed, low-skew, PECL/ECL 1:4 precision fanout buffer with a 2:1 mux front end in a small 16-pin TSSOP package. The 2:1 mux input accepts a single-ended PECL/ECL source (CLK1) and a differential PECL/ECL/HSTL source (CLK0). All I/O pins are 100K EP PECL/ECL logic compatible. AC performance is guaranteed over the industrial -40C to +85C temperature range and 3.3V to 5V supply voltage. This device will operate in PECL/LVPECL or ECL/LVECL mode. For clock applications, the high-speed design combined with an extremely fast rise/fall time of less than 225ps produces a toggle frequency as high as 2.5GHz (~400mVPP swing). A VBB output reference pin is available for AC-coupled and single-ended input applications. In addition, a synchronous output enable function is provided. The SY100EP15V is part of Micrel's high-speed, precision edge timing and distribution family. For applications that require a different I/O combination, consult Micrel's website at www.micrel.com, and choose from a comprehensive product line of high-speed, low-skew fanout buffers, translators, and clock dividers. All support documentation can be found on Micrel's web site at: www.micrel.com. ECL Pro is a trademark of Micrel, Inc. M9999-120505 hbwhelp@micrel.com or (408) 955-1690 Rev.: E 1 Amendment: /0 Issue Date: December 2005 ECL ProTM SY100EP15V Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information(1) Q0 1 /Q0 2 16 VCC Q D Q1 3 /Q1 4 15 /EN 14 CLK1 1 13 VBB Part Number Package Type Operating Range Package Marking Lead Finish SY100EP15VK4C K4-16-1 Commercial XEP15V Sn-Pb SY100EP15VK4CTR(2) K4-16-1 Commercial XEP15V Sn-Pb SY100EP15VK4I K4-16-1 Industrial XEP15V Sn-Pb 12 /CLK0 SY100EP15VK4ITR(2) K4-16-1 Industrial XEP15V Sn-Pb /Q2 6 11 CLK0 SY100EP15VK4G(3) K4-16-1 Industrial Q3 7 10 SEL XEP15V with Pb-Free bar-line Indicator NiPdAu Pb-Free SY100EP15VK4GTR(2, 3) K4-16-1 Industrial /Q3 8 9 VEE XEP15V with Pb-Free bar-line Indicator NiPdAu Pb-Free Q2 5 0 Available in 16-Pin TSSOP (K4-16-1) M9999-120505 hbwhelp@micrel.com or (408) 955-1690 Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25C, DC Electricals only. 2. Tape and Reel. 3. Pb-Free package is recommended for new designs. 2 ECL ProTM SY100EP15V Micrel, Inc. PIN DESCRIPTION Pin Pin Number Function 1, 2, 3, 4 5, 6, 7, 8 Q0 - Q3 /Q0 - /Q3 9 VEE Negative Power Supply: For PECL/LVPECL applications, connect to GND. 10 SEL 100KEP (LV)PECL/(LV)ECL Compatible 2:1 Mux Input Select Control. See "Truth Table." The select (SEL) pin includes an internal 75k pull-down resistor. Default condition when left floating is LOW, and CLK0 input is selected. 11, 12 CLK0, /CLK0 Differential (LV)PECL/(LV)ECL/HSTL Compatible Input: The inputs include an internal 75k pull-down resistor on CLK0 and internal 75k pull-up and pull-down on /CLK0. Default condition for CLK0 is LOW when left floating and VCC/2 for /CLK0 when left floating. 13 VBB Reference Output Voltage: This reference is typically used to bias the unused inverting input for single-ended input applications, or as the termination point for AC-coupled differential input applications. VBB reference value is approximately VCC-1.3V, and tracks Vcc 1:1. Maximum sink/source capability for VBB is 0.50mA. For single ended inputs, connect to the unused input through a 50 resistor. Decouple the VBB pin with a 0.01F capacitor to VCC. 14 CLK1 Single-Ended (LV)PECL/(LV)ECL Compatible Input: This pin includes an internal 75k pull-down resistor. Default condition is LOW when left floating. 15 /EN 100KEP (LV)PECL/(LV)ECL Compatible Input: This synchronous pin controls the output state. See "Truth Table." To ensure proper synchronous operation, adhere to the Set-up and Hold times, as described in the AC electrical table. When /EN pin goes HIGH, Q outputs go LOW, and /Q outputs go HIGH on the next falling clock transition. This synchronous operation avoids any chance of generating a runt pulse. 16 VCC Positive Power Supply: Bypass with 0.1F//0.01F low ESR capacitors. Outputs 0 through 3: 100KEP (LV)PECL/(LV)ECL compatible differential outputs. Terminate with 50 to VCC-2V. Unused output pairs may be left floating, or pulled-down with a 2k resistor to the most negative supply. Unused single-ended outputs must have a balanced load. For AC-coupled applications, the output stage emitter follower must have a DC current path to ground. See "Termination" section. TRUTH TABLE(1) CLK0 CLK1 SEL /EN Q L X L L L H X L L H X L H L L X H H L H X L H L H H L X Note: 1. = Negative edge. M9999-120505 hbwhelp@micrel.com or (408) 955-1690 3 ECL ProTM SY100EP15V Micrel, Inc. ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating Value Unit 6.0 V -6.0 to 0 +6.0 to 0 V 50 100 mA VCC - VEE Power Supply Voltage VIN Input Voltage (VCC = 0V, VIN not more negative than VEE) Input Voltage (VEE = 0V, VIN not more positive than VCC) IOUT Output Current IBB VBB Sink/Source Current(2) 0.5 mA TLEAD Lead Temperature (soldering, 20sec.) +260 C TA Operating Temperature Range -40 to +85 C TSTORE Storage Temperature Range -65 to +150 C JA Package Thermal Resistance (Junction-to-Ambient) 115 75 65 C/W 21 C/W JC -Continuous -Surge -Still-Air (single-layer PCB) -Still-Air (multi-layer PCB) -500lfpm (multi-layer PCB) Package Thermal Resistance (Junction-to-Case) 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. Due to the limited drive capability, use for inputs of same package only. DC ELECTRICAL CHARACTERISTICS(1) TA = -40C Symbol VCC TA = +25C TA = +85C Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Power Supply Voltage (PECL) (LVPECL) (ECL) (LVECL) 4.5 2.97 -5.5 -3.63 5.0 3.3 -5.0 -3.3 5.5 3.63 -4.5 -2.97 4.5 2.97 -5.5 -3.63 5.0 3.3 -5.0 -3.3 5.5 3.63 -4.5 -2.97 4.5 2.97 -5.5 -3.63 5.0 3.3 -5.0 -3.3 5.5 3.63 -4.5 -2.97 Unit Condition V ICC Power Supply Current -- -- 70 -- 52 72 -- -- 75 mA IIH Input HIGH Current -- -- 150 -- -- 150 -- -- 150 A VIN = VIH IIL Input LOW Current CLK0, CLK1 /CLK0 0.5 -150 -- -- -- -- 0.5 -150 -- -- -- -- 0.5 -150 -- -- -- -- A A VIN = VIL VIN = VIL Input Capacitance (TSSOP) -- -- -- -- 1.0 -- -- -- -- pF CIN Note: 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. M9999-120505 hbwhelp@micrel.com or (408) 955-1690 4 ECL ProTM SY100EP15V Micrel, Inc. (100KEP) LVPECL DC ELECTRICAL CHARACTERISTICS(1) VCC = 3.0V 10%, VEE = 0V TA = -40C Symbol Parameter TA = +25C TA = +85C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition VIL Input LOW Voltage (Single-Ended) 1355 -- 1675 1355 -- 1675 1355 -- 1675 mV VCC = 3.3V VIH Input HIGH Voltage (Single-Ended) 2075 -- 2420 2075 -- 2420 2075 -- 2420 mV VCC = 3.3V VOL Output LOW Voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mV VCC = 3.3V VOH Output HIGH Voltage 2155 2280 2405 2155 2280 2405 2155 2280 2405 mV VCC = 3.3V VBB Reference Voltage(2) 1775 1875 1975 1775 1875 1975 1775 1875 1975 mV VCC = 3.3V VIHCMR Input HIGH Voltage Common Mode Range(3) 1.2 -- VCC 1.2 -- VCC 1.2 -- VCC V Notes: 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output parameters varies 1:1 with VCC. Output load is 50 to VCC-2V. 2. VBB varies 1:1 with VCC. 3. The VIHCMR range is referenced to the most positive side of the differential input signal. (100KEP) PECL DC ELECTRICAL CHARACTERISTICS(1) VCC = 5.0V 10%, VEE = 0V TA = -40C Symbol TA = +25C TA = +85C Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition VIL Input LOW Voltage (Single-Ended) 3055 -- 3375 3055 -- 3375 3055 -- 3375 mV VCC = 5V VIH Input HIGH Voltage (Single-Ended) 3775 -- 4120 3775 -- 4120 3775 -- 4120 mV VCC = 5V VOL Output LOW Voltage 3055 3180 3305 3055 3180 3305 3055 3180 3305 mV VCC = 5V VOH Output HIGH Voltage 3855 3980 4105 3855 3980 4105 3855 3980 4105 mV VCC = 5V 3475 3575 3675 3475 3575 3675 3475 3575 3675 mV VCC = 5V 1.2 -- VCC 1.2 -- VCC 1.2 -- VCC V VBB VIHCMR Output Voltage Reference(2) Voltage(3) Input HIGH Common Mode Range Notes: 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output parameters varies 1:1 with VCC. Output load is 50 to VCC-2V. 2. VBB varies 1:1 with VCC. 3. The VIHCMR range is referenced to the most positive side of the differential input signal. M9999-120505 hbwhelp@micrel.com or (408) 955-1690 5 ECL ProTM SY100EP15V Micrel, Inc. (100KEP) LVECL DC ELECTRICAL CHARACTERISTICS(1) VCC = 0V, VEE = -2.97V to -3.63V TA = -40C Symbol Parameter Min. Typ. TA = +25C Max. Min. Typ. TA = +85C Max. Min. Typ. Max. Unit Condition VIL Input LOW Voltage (Single-ended) -1945 -- -1625 -1945 -- -1625 -1945 -- -1625 mV VIH Input HIGH Voltage (Single-ended) -1165 -- -880 -- -880 -- -880 mV VOL Output LOW Voltage -1945 -1820 -1695 -1945 -1820 -1695 -1945 -1820 -1695 mV 50 to VCC-2V VOH Output HIGH Voltage -1145 -1020 mV 50 to VCC-2V VBB Output Reference Voltage -1525 -1425 -1325 -1525 -1425 -1325 -1525 -1425 -1325 VIHCMR Input HIGH Voltage Common Mode Range(2) VEE +1.2 -895 -- 0.0 -1165 -1145 -1020 VEE +1.2 -895 -- 0.0 -1165 -1145 -1020 VEE +1.2 -895 -- 0.0 mV V Notes: 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. 2. The VIHCMR range is referenced to the most positive side of the differential input signal. (100K) ECL DC ELECTRICAL CHARACTERISTICS(1) VCC = 0V, VEE = -4.5V to -5.5V TA = -40C Symbol Parameter Min. Typ. TA = +25C Max. Min. Typ. TA = +85C Max. Min. Typ. Max. Unit Condition VIL Input LOW Voltage -1945 -- -1625 -1945 -- -1625 -1945 -- -1625 mV VIH Input HIGH Voltage -1225 -- -880 -- -880 -- -880 mV VOL Output LOW Voltage -1945 -1820 -1695 -1945 -1820 -1695 -1945 -1820 -1695 mV 50 to VCC-2V VOH Output HIGH Voltage -1145 -1020 mV 50 to VCC-2V VBB Output Reference Voltage -1525 -1425 -1325 -1525 -1425 -1325 -1525 -1425 -1325 VIHCMR Input HIGH Voltage Common Mode Range(2) VEE +1.2 -895 -- 0.0 -1225 -1145 -1020 VEE +1.2 -- -895 0.0 -1225 -1145 -1020 VEE +1.2 -- -895 0.0 mV V Notes: 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. 2. The VIHCMR range is referenced to the most positive side of the differential input signal. HSTL INPUT DC ELECTRICAL CHARACTERISTICS VCC = 2.97V to 3.63V, VEE = 0V TA = -40C Symbol Parameter TA = +25C TA = +85C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit VIH Input HIGH Voltage 1200 -- -- 1200 -- -- 1200 -- -- mV VIL Input LOW Voltage -- -- 400 -- -- 400 -- -- 400 mV M9999-120505 hbwhelp@micrel.com or (408) 955-1690 6 ECL ProTM SY100EP15V Micrel, Inc. AC ELECTRICAL CHARACTERISTICS LVPECL: VCC = 2.97V to 3.63V, VEE = 0V; PECL: VCC = 4.5V to 5.5V, VEE = 0V ECL: VCC = 0V, VEE = -4.5V to -5.5V; LVECL: VCC = 0V, VEE = -2.97V to -3.63V TA = -40C Symbol Parameter TA = +25C TA = +85C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit fMAX(1) Maximum Frequency 2.5 -- -- 2.5 -- -- 2.5 -- -- GHz tPD PropagationDelay to Output PECL/ECL Diff. IN-to-Q IN (Single-Ended)-to-Q SEL-to-Q 275 250 250 -- -- -- 425 450 450 275 250 250 375 400 400 425 450 450 275 250 250 -- -- -- 425 450 450 ps ps ps 275 250 250 -- -- -- 425 450 450 275 250 250 375 400 400 425 450 450 275 250 250 -- -- -- 425 450 450 ps ps ps -- -- -- -- 25 150 -- -- 15 100 25 150 -- -- -- -- 25 150 ps ps /EN to CLK 100 0 -- 100 0 -- 100 0 -- ps /EN to CLK 200 50 -- 200 50 -- 200 50 -- ps -- -- 0.2 <20 1 -- -- -- 0.2 <20 1 -- -- -- 0.2 <20 1 -- psRMS psPP LVPECL/LVECL Diff. IN-to-Q IN (Single-Ended)-to-Q SEL-to-Q tSKEW(2) Within-Device Skew Part-to-Part Skew tS(3) Set-Up Time tH (3) Hold Time (Diff.) (Diff.) Jitter(4) tJITTER Cycle-to-Cycle Total Jitter (622MHz clock)(5) VID Input Voltage Range 150 800 1200 150 800 1200 150 800 1200 mV t r, t f Output Rise/Fall Times (20% to 80%) 75 -- 225 75 130 225 85 -- 225 ps Notes: 1. fMAX is defined as the maximum toggle frequency. Measured with 750mV input signal, 50% duty cycle, output swing 400mV(diff), all loading with 50 to VCC-2V. 2. Skew is measured between outputs under identical transitions. 3. Set-up and hold times apply to synchronous applications that intend to enable/disable before then ext clock cycle. For asynchronous applications, set-up and hold time does not apply. 4. Cycle-to-cycle jitter definition: The variation in period between adjacent cycles over a random sample of adjacent cycle pairs. TJITTER_CC = Tn-Tn+1 where T is the time between rising edges of the output signal. 5. Total jitter definition: with an ideal clock input applied to one channel of the MUX, no more than one output edge in 1012 output edges will deviate by more than the specified peak-to-peak jitter value. M9999-120505 hbwhelp@micrel.com or (408) 955-1690 7 ECL ProTM SY100EP15V Micrel, Inc. TERMINATION RECOMMENDATIONS +3.3V +3.3V ZO = 50 R1 130 R1 130 +3.3V R2 82 R2 82 Vt = VCC -2V ZO = 50 Figure 1. Parallel Termination-Thevenin Equivalent Notes: 1. For +2.5V systems: R1 = 250, R2 = 62.5. 2. For +5.0V systems: R1 = 82, R2 = 130. +3.3V +3.3V Z = 50 Z = 50 50 50 "source" 50 Rb "destination" (Optional) C1 0.01F Figure 2. Three-Resistor "Y-Termination" Notes: 1. Power-saving alternative to Thevenin termination. 2. Place termination resistors as close to destination inputs as possible. 3. Rb resistor sets the DC bias voltage, equal to VT. For +3.3V systems Rb = 46 to 50. For +5V systems, Rb = 110. 4. C1 is an optional bypass capacitor intended to compensate for any tr/tf mismatches. +3.3V +3.3V Q +3.3V R1 130 R1 130 ZO = 50 +3.3V 50 /Q VBB Vt = VCC -2V R2 82 R2 82 0.01F +3.3V Figure 3. Terminating Unused I/O Notes 1. Unused output (/Q) must be terminated to balance the output. 2. Micrel's differential I/O logic devices include a VBB reference pin . 3. Connect unused input through 50 to VBB. Bypass with a 0.01F capacitor to VCC, not GND. 4. For +2.5V systems: R1 = 250, R2 = 62.5. M9999-120505 hbwhelp@micrel.com or (408) 955-1690 8 ECL ProTM SY100EP15V Micrel, Inc. 16-PIN TSSOP (K4-16-1) Rev. 01 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB USA http://www.micrel.com The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2005 Micrel, Incorporated. M9999-120505 hbwhelp@micrel.com or (408) 955-1690 9