Micrel, Inc. SY100E310L 3.3V ECL/PECL 2:8 DIFFERENTIAL FANOUT BUFFER DESCRIPTION FEATURES ■ Guaranteed AC performance over temperature and voltage: • > 800MHz fMAX (typical) • < 50ps within-device skew ■ Low voltage operation: • LVPECL: +3.3V ±10% • LVECL: –3.3V ±10% ■ Internal 75kΩ pull-down resistors ■ Guaranteed over industrial temperature range: –40°C to +85°C ■ Pin-for-pin, plug-in replacement for MC100LVE310 ■ Available in 28-pin PLCC package The SY100E310L is a 3.3V, precision 2:8 ECL/PECL fanout buffer optimized for precision low-skew clock distribution. The SY100E310L features fully differential clock paths to minimize both device and system skew resulting in skew performance of < 50ps. In addition, the device includes a 2:1 multiplexer input for redundant switchover applications. The SY100E310L is optimized for low voltage +3.3V LVPECL or –3.3V LVECL applications. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. CROSS REFERENCE TABLE APPLICATIONS ■ Communications clock distribution ■ Redundant clock switchover ■ High-end server clock distribution Micrel Semiconductor On Semiconductor SY100E310LJI MC100LVE310FN SY100E310LJITR MC100LVE310FNR2 TYPICAL PERFORMANCE Q0 900 800 /Q1 700 300 0 0 SEL Q5 1600 100 /Q4 /CLKB 1400 200 Q4 1200 /Q3 400 800 CLKB Q3 500 1000 /Q2 600 200 Q AMPLITUDE (mV) Q1 Q2 /CLKA Output Swing vs. Frequency 600 /Q0 400 FUNCTIONAL BLOCK DIAGRAM CLKA SY100E310L CLK FREQUENCY (MHz) /Q5 Q6 /Q6 Q7 VBB M9999-032206 [email protected] or (408) 955-1690 /Q7 Rev.: D 1 Amendment: /0 Issue Date: March 2006 SY100E310L Micrel, Inc. PACKAGE/ORDERING INFORMATION CLKB VBB /CLKA VCC CLKA CLK_SEL VEE Ordering Information(1) 4 3 2 1 28 27 26 5 6 7 8 9 10 11 25 24 23 22 21 20 19 Q0 /Q0 Q1 VCCO /Q1 Q2 /Q2 Package Type Operating Range Package Marking Lead Finish SY100E310JI J28-1 Industrial SY100E310LJI Sn-Pb SY100E310JITR(2) J28-1 Industrial SY100E310LJI Sn-Pb SY100E310JY(3) J28-1 Industrial SY100E310JY with Pb-Free bar-line indicator Matte-Sn SY100E310JYTR(2, 3) J28-1 Industrial SY100E310JY with Pb-Free bar-line indicator Matte-Sn 12 13 14 15 16 17 18 Notes: /Q5 Q5 /Q4 VCCO Q4 /Q3 Q3 /CLKB NC /Q7 VCCO Q7 /Q6 Q6 Part Number 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only. 2. Tape and Reel. 3. Pb-Free package is recommended for new designs. 28-Pin PLCC (J28-1) PIN DESCRIPTION Pin Number Pin Name Pin Function 1 VCC Positive Core Power Supply. Bypass with 0.1µF||0.01µF low ESR capacitors. Not internally connected to VCCO. Must be externally connected to VCCO on PCB. 28, 2, 4, 5 CLKA, /CLKA CLKB, /CLKB Differential Inputs: These input pairs are the differential data inputs to the device. 3 VBB Reference Voltage Output. Used for AC-coupled inputs or single-ended inputs. 6 NC 8, 15, 22 VCCO 24, 21, 19, 17, 14, 12, 10, 7 /Q0, /Q1, /Q2, /Q3 /Q4, /Q5, /Q6, /Q7 Differential Outputs. 25, 23, 20, 18, 16, 13, 11, 9, Q0, Q1, Q2, Q3 Q4, Q5, Q6, Q7 Differential Outputs. 26 VEE 27 CLK_SEL M9999-032206 [email protected] or (408) 955-1690 No Connect. Positive Power Supply. Bypass with 0.1µF||0.01µF low ESR capacitors. Not internally connected to VCC. Must be externally connected to VCC on PCB. Negative Supply. Single-Ended Clock Select. 2 SY100E310L Micrel, Inc. Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VCC) ................................. –0.5V to +4.0V Input Voltage (VIN) ........................................ –0.5V to VCC Termination Current(3) Source or sink current on VBB (IBB) ..................... ±0.5mA Input Current Source or sink current (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) ......... ±50mA Lead Temperature (soldering, 20 sec.) ................... +260°C Storage Temperature (TS) ...................... –65°C to +150°C Supply Voltage (VCC) ................................. +3.0V to +3.6V Ambient Temperature (TA) ........................ –40°C to +85°C Package Thermal Resistance PLCC (θJA) Still-Air ......................................................... 63.5°C/W 500lfpm ........................................................ 43.5°C/W DC ELECTRICAL CHARACTERISTICS(4) TA = –40°C to +85°C; unless noted. Symbol Parameter VCC Power Supply Condition Min Typ Max Units 3.0 3.3 3.6 V Min Typ Max Units 55 70 mA LVPECL DC ELECTRICAL CHARACTERISTICS(4, 5) VCC = +3.3V, VEE = 0V; TA = –40°C to +85°C; unless noted. Symbol Parameter Condition ICC Power Supply Current No load, max. VCC VOH Output High Voltage (Q0-Q7, /Q0-/Q7) RL = 50Ω to VCC –2V 2215 2345 2420 mV VOL Output Low Voltage (Q0-Q7, /Q0-/Q7) RL = 50Ω to VCC –2V 1470 1595 1680 mV VIH Input High Voltage (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) 2135 2420 mV VIL Input Low Voltage (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) 1490 1825 mV VIHCMR Input High Voltage Common Mode Range (Differential) (CLKA, / CLKA, CLKB, /CLKB) 1.8 2.9 V VBB Output Reference Voltage 1.92 2.04 V IIN Input HIGH Current (CLKA, /CLKA, CLKB,/CLKB, CLK_SEL) 150 µA IIL Input LOW Current (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) Note 6 0.5 µA 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. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Due to the limited drive capability use for input of the same package only. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 5. Input and output parameters vary 1:1 with VCC. VCC can vary ±0.3V. 6. VIHCMR is defined as the range within which the VIH level may vary with the device still meeting the propagation delay specification. The VIL level must be such that the peak-to-peak voltage is less than 1.0V and then greater than or equal to VPP(min). M9999-032206 [email protected] or (408) 955-1690 3 SY100E310L Micrel, Inc. LVNECL DC ELECTRICAL CHARACTERISTICS(7, 8) VCC = +3.3V, VEE = 0V; TA = –40°C to +85°C; unless noted. Symbol Parameter Condition Min Typ Max Units VOH Output High Voltage (Q0-Q7, /Q0-/Q7) RL = 50Ω to VCC –2V –1085 –955 –880 mV VOL Output Low Voltage (Q0-Q7, /Q0-/Q7) RL = 50Ω to VCC –2V –1830 –1705 –1620 mV VIH Input High Voltage (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) –1165 –880 mV VIL Input Low Voltage (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) –1810 –1475 mV VIHCMR Input High Voltage Common Mode Range (Differential) (CLKA, / CLKA, CLKB, /CLKB) –1.5 –0.4 V VBB Output Reference Voltage –1.38 –1.26 V IIN Input HIGH Current (CLKA, /CLKA, CLKB,/CLKB, CLK_SEL) 150 µA IIL Input LOW Current (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) Note 9 µA 0.5 AC ELECTRICAL CHARACTERISTICS VCC = +3.0 to +3.6V and VEE = 0V or VCC = 0V and VEE = –3.0 to –3.6V; TA = –40°C to +85°C; unless noted. Symbol Parameter Condition Min Typ Max fMAX Maximum Operating Frequency VOUT = 400mV tPD Propagation Delay CLKA-to-Q, CLKB-to-Q (Differential) Note 10 525 725 ps CLKA-to-Q, CLKB-to-Q (Single-ended) Note 11 500 750 ps tSKEW Within-Device Skew Part-to-Part Skew (Differential) Note 12 50 200 ps ps tJITTER Cycle-to-Cycle Jitter VPP Input Swing tr, tf Rise / Fall Time (20% to 80%) (Q0-Q7, /Q0-/Q7) 800 MHz 1 Note 13 500 160 375 Units psRMS 1000 mV 600 ps Notes: 7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 8. Input and output parameters vary 1:1 with VCC. VCC can vary ±0.3V. 9. VIHCMR is defined as the range within which the VIH level may vary with the device still meeting the propagation delay specification. The VIL level must be such that the peak-to-peak voltage is less than 1.0V and then greater than or equal to VPP(min). 10. 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. 11. 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. 12. The within-device skew is defined as the worst case difference between any two similar delay paths within a single device. 13. VPP(min) is defined as the minimum input differential voltage which will cause no increase in the propagation delay. The VPP(min) is AC limited for the E310L as a differential input as low as 50 mV will still produce full ECL levels at the output. M9999-032206 [email protected] or (408) 955-1690 4 SY100E310L Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS VCC = 3.3V, TA = 25°C Output Swing vs. Frequency 900 700 PROPAGATION DELAY (ps) Q AMPLITUDE (mV) 800 700 600 500 400 300 200 675 SEL-Q 650 625 600 575 CLK-Q(S-E) CLK-Q(Diff) 550 525 500 -50 -25 0 25 50 75 100 TEMPERATURE (°C) (Forced Air) 1600 1400 1200 800 1000 600 400 0 0 200 100 Input to Q Propagation Delay vs. Temperature CLK FREQUENCY (MHz) RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function Data Sheet Link HBW Solutions New Products and Applications www.micrel.com/product-info/products/solutions.shtml M9999-032206 [email protected] or (408) 955-1690 5 SY100E310L Micrel, Inc. 28-PIN PLCC (J28-1) Rev. 03 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. © 2006 Micrel, Incorporated. M9999-032206 [email protected] or (408) 955-1690 6