Micrel, Inc. Precision Edge® ® SY89824L Precision Edge 3.3V 1:22 HIGH-PERFORMANCE, LOW VOLTAGE BUS CLOCK DRIVER SY89824L FEATURES ■ 3.3V core supply, 1.8V output supply for reduced ■ ■ ■ ■ ■ ■ Precision Edge® power LVPECL and HSTL inputs 22 differential HSTL (low-voltage swing) output pairs HSTL outputs drive 50Ω to ground with no offset voltage Low part-to-part skew (200ps max.) Low pin-to-pin skew (50ps max.) Available in a 64-Pin EPAD-TQFP DESCRIPTION The SY89824L is a High Performance Bus Clock Driver with 22 differential HSTL (High Speed Transceiver Logic) output pairs. The part is designed for use in low voltage (3.3V/1.8V) applications which require a large number of outputs to drive precisely aligned, ultra low skew signals to their destination. The input is multiplexed from either HSTL or LVPECL (Low Voltage Positive Emitter Coupled Logic) by the CLK_SEL pin. The Output Enable (OE) is synchronous so that the outputs will only be enabled/ disabled when they are already in the LOW state. This avoids any chance of generating a runt clock pulse when the device is enabled/disabled as can happen with an asynchronous control. The SY89824L features low pin-to-pin skew (50ps max.) and low part-to-part skew (200ps max.)—performance previously unachievable in a standard product having such a high number of outputs. The SY89824L is available in a single space saving package, enabling a lower overall cost solution. APPLICATIONS ■ High-performance PCs ■ Workstations ■ Parallel processor-based systems ■ Other high-performance computing ■ Communications LOGIC SYMBOL CLK_SEL HSTL_CLK /HSTL_CLK 0 22 22 Q0 - Q21 /Q0 - /Q21 LVPECL_CLK 1 /LVPECL_CLK LEN Q OE D Precision Edge is a registered trademark of Micrel, Inc. M9999-020207 [email protected] or (408) 955-1690 Rev.: G 1 Amendment: /0 Issue Date: February 2007 Precision Edge® SY89824L Micrel, Inc. PACKAGE/ORDERING INFORMATION VCCO Q6 Q6 Q5 Q5 Q4 Q4 Q3 Q3 Q2 Q2 Q1 Q1 Q0 Q0 VCCO Ordering Information(1) Part Number Package Type Operating Range Package Marking Lead Finish SY89824LHC H64-1 Commercial SY89824LHC Sn-Pb SY89824LHCTR(2) H64-1 Commercial SY89824LHC Sn-Pb SY89824LHZ(3) H64-1 Commercial SY89824LHZ with Pb-Free Pb-Free bar-line indicator Matte-Sn SY89824LHZTR(2, 3) H64-1 Commercial SY89824LHZ with Pb-Free Pb-Free bar-line indicator Matte-Sn 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 VCCO 1 48 VCCO NC 2 47 Q7 Q7 NC 3 46 VCCI 4 45 HSTL_CLK 5 44 HSTL_CLK CLK_SEL LVPECL_CLK 6 43 7 42 Q8 Q8 Q9 Q9 8 41 LVPECL_CLK 9 40 GND 10 39 OE NC NC Q21 11 38 12 37 13 36 14 35 Q21 15 34 Q13 Q13 VCCO 16 33 VCCO 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Q10 Q10 Q11 Q11 Q12 Q12 VCCO Q14 Q14 Q15 Q15 Q16 Q16 Q17 Q17 Q18 Q18 Q19 Q19 Q20 Q20 VCCO Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC electricals only. 2. Tape and Reel. 3. Pb-Free package recommended for new designs. 64-Pin EPAD-TQFP (H64-1) PIN NAMES Pin Function HSTL_CLK, /HSTL_CLK Differential HSTL Inputs LVPECL_CLK, /LVPECL_CLK Differential LVPECL Inputs CLK_SEL Input CLK Select (LVTTL) OE Output Enable (LVTTL) Q0-Q21, /Q0-/Q21 Differential HSTL Outputs GND Ground VCCI VCC Core VCCO VCC Output M9999-020207 [email protected] or (408) 955-1690 2 Precision Edge® SY89824L Micrel, Inc. TRUTH TABLE SIGNAL GROUPS OE(1) CLK_SEL Q0-Q21 /Q0-/Q21 0 0 LOW HIGH HSTL Input 0 1 LOW HIGH HSTL Output 1 0 HSTL_CLK /HSTL_CLK 1 1 LVPECL_CLK /LVPECL_CLK Level Direction Signal HSTL_CLK, /HSTL_CLK Q0-Q21, /Q0-/Q21 LVPECL Input LVPECL_CLK, /LVPECL_CLK LVCMOS/LVTTL Input CLK_SEL, OE NOTE: 1. The OE (output enable) signal is synchronized with the low level of the HSTL_CLK and LVPECL_CLK signal. ABSOLUTE MAXIMUM RATINGS(1) Value Unit VCCI, VCCO Symbol VCC Pin Potential to Ground Pin Rating –0.5 to +4.0 V VIN Input Voltage –0.5 to VCCI V IOUT DC Output Current (Output HIGH) –50 mA TLEAD Lead Temperature (soldering, 20sec.) 260 °C Tstore Storage Temperature –65 to +150 °C θJA Package Thermal Resistance (Junction-to-Ambient) With Die attach soldered to GND: –Still-Air (TQFP) –200lfpm (TQFP) –500lfpm (TQFP) 23 18 15 °C/W °C/W °C/W 44 36 30 °C/W °C/W °C/W 4.3 °C/W With Die attach NOT soldered to GND: θJC –Still-Air (TQFP) –200lfpm (TQFP) –500lfpm (TQFP) Package Thermal Resistance (Junction-to-Case) NOTE: 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 book. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. M9999-020207 [email protected] or (408) 955-1690 3 Precision Edge® SY89824L Micrel, Inc. DC ELECTRICAL CHARACTERISTICS Power Supply TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit VCCI VCC Core 3.0 3.3 3.6 3.0 3.3 3.6 3.0 3.3 3.6 V VCCO VCC Output 1.6 1.8 2.0 1.6 1.8 2.0 1.6 1.8 2.0 V ICCI ICC Core — 115 140 — 115 140 — 115 140 mA HSTL TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit 1.0 — 1.2 1.0 — 1.2 1.0 — 1.2 V Output HIGH Voltage(1) VOL Output LOW Voltage(1) 0.2 — 0.4 0.2 — 0.4 0.2 — 0.4 V VIH Input HIGH Voltage VX +0.1 — 1.6 VX +0.1 — 1.6 VX +0.1 — 1.6 V VIL Input LOW Voltage –0.3 — VX –0.1 –0.3 — VX –0.1 –0.3 — VX –0.1 V VX Input Crossover Voltage 0.68 — 0.9 0.68 — 0.9 0.68 — 0.9 V IIH Input HIGH Current +20 — –350 +20 — –350 +20 — –350 µA IIL Input LOW Current — — –500 — — –500 — — –500 µA VOH NOTE: 1. Outputs loaded with 50Ω to ground. LVPECL TA = 0°C Symbol Parameter Min. TA = +25°C Max. Min. TA = +85°C Max. Min. Max. Unit VIH Input HIGH Voltage VCCI – 1.165 VCCI – 0.880 VCCI – 1.165 VCCI – 0.880 VCCI – 1.165 VCCI – 0.880 V VIL Input LOW Voltage VCCI – 1.810 VCCI – 1.475 VCCI – 1.810 VCCI – 1.475 VCCI – 1.810 VCCI – 1.475 V IIH Input HIGH Current — +150 — +150 — +150 µA IIL Input LOW Current 0.5 — 0.5 — 0.5 — µA LVCMOS/LVTTL TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit VIH Input HIGH Voltage 2.0 — — 2.0 — — 2.0 — — V VIL Input LOW Voltage — — 0.8 — — 0.8 — — 0.8 V IIH Input HIGH Current +20 — –250 +20 — –250 +20 — –250 µA IIL Input LOW Current — — –600 — — –600 — — –600 µA M9999-020207 [email protected] or (408) 955-1690 4 Precision Edge® SY89824L Micrel, Inc. AC ELECTRICAL CHARACTERISTICS(1) TA = 0°C Symbol tPD Parameter Propagation Delay(2) Skew(3) TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit — 1.0 — — 1.0 — — 1.0 — ns — — 50 — — 50 — — 50 ps — — 200 — — 200 — — 200 ps tSKEW Within-Device tSKPP Part-to-Part Skew(4) VPP Minimum Input Swing(5) LVPECL_CLK 600 — — 600 — — 600 — — mV VCMR Common Mode Range(6) LVPECL_CLK –1.5 — –0.4 –1.5 — –0.4 –1.5 — –0.4 V tS OE Set-Up Time(7) 1.0 — — 1.0 — — 1.0 — — ns tH OE Hold Time 0.5 — — 0.5 — — 0.5 — — ns tr tf Output Rise/Fall Time (20% – 80%) 300 — 700 300 — 700 300 — 700 ps NOTES: 1. Outputs loaded with 50Ω to ground. Airflow ≥ 300lfpm. 2. Differential propagation delay is defined as the delay from the crossing point of the differential input signals to the crossing point of the differential output signals. 3. The within-device skew is defined as the worst case difference between any two similar delay paths within a single device operating at the same voltage and temperature. 4. The part-to-part skew is defined as the absolute worst case difference between any two delay paths on any two devices operating at the same voltage and temperature. 5. The VPP(min.) is defined as the minimum input differential voltage which will cause no increase in the propagation delay. 6. VCMR is defined as the range within which the VIH level may vary, with the device still meeting the propagation delay specification. The numbers in the table are referenced to VCCI. The VIL level must be such that the peak-to-peak voltage is less than 1.0V and greater than or equal to VPP(min.). The lower end of the CMR range varies 1:1 with VCCI. The VCMR(min) will be fixed at 3.3V – |VCMR(min)|. 7. OE set-up time is defined with respect to the rising edge of the clock. OE HIGH to LOW transition ensures outputs remain disabled during the next clock cycle. OE LOW to HIGH transition enables normal operation of the next input clock. M9999-020207 [email protected] or (408) 955-1690 5 Precision Edge® SY89824L Micrel, Inc. VCCI = 3.0V VCCO = 1.6V TA = 25¡C /Q (180mV/div) Q (100mV/div) WAVEFORMS TIME (2ns/div) VCCI = 3.0V VCCO = 1.6V TA = 25¡C /Q (180mV/div) Q (100mV/div) Figure 1. 100MHz Output Waveform TIME (2ns/div) Figure 2. 300MHz Output Waveform M9999-020207 [email protected] or (408) 955-1690 6 Precision Edge® SY89824L Micrel, Inc. 64-PIN EPAD-TQFP (DIE UP) (H64-1) +0.05 –0.05 +0.002 –0.002 +0.05 –0.05 +0.012 –0.012 +0.03 –0.03 +0.012 –0.012 +0.15 –0.15 +0.006 –0.006 +0.05 –0.05 +0.002 –0.002 Rev. 02 Package EP- Exposed Pad Die CompSide Island Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane PCB Thermal Consideration for 64-Pin EPAD-TQFP Package (Always solder, or equivalent, the exposed pad to the PCB) Package Notes: Note 1. Package meets Level 2 qualification. Note 2. All parts are 100% baked and dry-packaged before shipment. Note 3. Exposed pads must be soldered to a ground for proper thermal management. MICREL, INC. TEL 2180 FORTUNE DRIVE SAN JOSE, CA 95131 + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB USA http://www.micrel.com The information furnished by Micrel in this data sheet 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. © 2005 Micrel, Incorporated. M9999-020207 [email protected] or (408) 955-1690 7