Micrel, Inc. Precision Edge® SY89312V ® 3.3V/5V, 4GHz PECL/ECL ÷ 2 CLOCK GENERATOR Precision Edge SY89312V FEATURES ■ Guaranteed AC performance over temperature and voltage: • > 4GHz fMAX input • < 160ps tr/tf • < 440ps tpd ■ 3.3V and 5V power supply operation ■ 100k ECL/PECL compatible I/O ■ Internal 75KΩ input pull-down resistors ■ Wide operating temperature range: –40°C to +85°C ■ Available in ultra-small 8-pin MLF® (2mm x 2mm) package Precision Edge® DESCRIPTION The SY89312V is an integrated ÷2 divider with differential clock inputs. It is functionally equivalent to the SY100EP32V but in an ultra-small 8-lead MLF® package that features a 70% smaller footprint. The VBB pin, an internally generated voltage supply, is available for this device only. For single-ended input conditions, the unused differential input is connected to VBB as a switching reference voltage. VBB may also bias AC-coupled inputs. When used, decouple VBB and VCC via a 0.01µF capacitor and limit current sourcing or sinking to 0.5mA. When not used, VBB should be left open. The reset pin is asynchronous and is asserted when it is high. Upon power-up, the internal flip-flops will be in a random state; the reset allows for the synchronous use of multiple SY89312Vs in a system. TRUTH TABLE(1) CLK /CLK RESET Q /Q X X H L H L F F Note: 1. F = Divide by 2 function Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc. M9999-051006 [email protected] or (408) 955-1690 Rev.: C 1 Amendment: /0 Issue Date: May 2006 Precision Edge® SY89312V Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information RESET CLK 1 8 R 2 /CLK 3 VBB 4 ÷2 VCC Part Number Package Type Operating Range Package Marking Lead Finish 7 Q SY89312VMITR MLF-8 Industrial 312 Sn-Pb 6 /Q SY89312VMGTR(1) MLF-8 Industrial Pb-Free NiPdAu 5 VEE 312 with Pb-Free bar-line indicator Note: 1. Pb-Free package is recommended for new designs. TOP VIEW 8-Pin MLF® Ultra-Small Outline (2mm x 2mm) PIN DESCRIPTION Pin Number Pin Name Type 2, 3 CLK, /CLK 100K ECL/PECL Input ended inputs. Differential PECL/ECL Input: Internal 75kΩ pull-down resistor. If left open, pin defaults LOW. See “Input Interface Applications” section for single- 7, 6 Q, /Q 100K ECL/PECL Output Differential PECL/ECL Output: Output CLK input divided by 2. See “Output Interface Applications” section for recommendations on terminations. 8 VCC Positive Power Supply Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors. 5 VEE, Exposed Pad Negative Power Supply Negative Power Supply: VEE and Exposed pad must be tied to most negative supply. For PECL/LVPECL connect to ground. 4 VBB Reference Voltage Output Bias Reference Voltage: VCC–1.4V. Used as reference voltage for singleended inputs or AC-coupling to the CLK, /CLK inputs. Max sink/source is ±0.5mA. See “Input Interface Applications” section. 1 Reset 100k ECL/PECL Input M9999-051006 [email protected] or (408) 955-1690 Pin Function Single-ended Input: PECL/ECL Asynchronous reset. 2 Precision Edge® SY89312V Micrel, Inc. Absolute Maximum Ratings( 1) Operating Ratings(2) Supply Voltage (|VCC–VEE|) ......................................... 6.0V Input Voltage (VIN) ......................................... –0.5V to VCC LVPECL Output Current (IOUT) Continuous ............................................................. 50mA Surge .................................................................... 100mA Current (VBB) Source or sink current on VBB,(3) .............................. ±1.5mA Lead Temperature (soldering, 20 sec.) ................... +260°C Storage Temperature (TS) ....................... –65°C to +150°C Supply Voltage (|VCC–VEE|) ............................ 3.0V to 3.6V ................................................................ 4.5V to 5.5V Ambient Temperature (TA) ......................... –40°C to +85°C Package Thermal Resistance(4) MLF® (θJA) Still-Air ................................................................. 93°C/W 500lfpm ............................................................... 87°C/W MLF® (ΨJB) Junction-to-Board ................................................ 56°C/W PECL/ECL (100K) DC ELECTRICAL CHARACTERISTICS VCC = +3.3V ±10% or +5V ±10% and VEE = 0V; VCC = 0V and VEE = –3.3V ±10% or –5V ±10%; RL = 50Ω to VCC–2V; TA = –40°C to +85°C unless otherwise stated. Symbol Parameter Condition Min Typ Max Units IEE Power Supply Current Max VCC, no load — 30 42 mA VOH Output HIGH Voltage VCC–1.145 — VCC–0.895 V VOL Output LOW Voltage VCC–1.945 — VCC–1.695 V VIH Input HIGH Voltage VCC–1.225 — VCC–0.88 V VIL Input LOW Voltage VCC–1.945 — VCC–1.625 V VIHCMR Input HIGH Voltage Common Mode Range VEE+2.0 — VCC V VBB Bias Voltage IIH Input HIGH Current — — 150 µA IIL Input LOW Current CLK 0.5 — — µA Input LOW Current /CLK –150 — — µA Note 5 VCC–1.525 VCC–1.425 VCC–1.325 V 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. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. 5. VIHCMR(min) varies 1:1 with VEE, (max) varies 1:1 with VCC. M9999-051006 [email protected] or (408) 955-1690 3 Precision Edge® SY89312V Micrel, Inc. AC ELECTRICAL CHARACTERISTICS(6) PECL: VCC = +3.3V ±10% or +5V ±10% and VEE = GND; ECL: VEE = –3.3V ±10% or –5V ±10% and VCC = GND; RL = 50Ω to VCC–2V; TA = –40°C to +85°C unless otherwise stated. Symbol Parameter Condition Min Typ Max Units fMAX Maximum Input Frequency 4 — — GHz tpd Propagation Delay to Output Differential RESET, CLK ➝ Q, /Q 250 275 440 tRR Set/Reset Recovery 200 100 — ps tPW Minimum Pulse Width 550 200 — ps tJITTER Cycle-to-Cycle RMS Jitter — — 1 psRMS VPP Input Voltage Swing (Differential) 150 800 1200 mV tr tf Output Rise/Fall Times (20% to 80%) 50 100 160 ps ps RESET Q, /Q Note: 6. Measured using a 750mV source, 50% duty cycle clock source. TIMING DIAGRAM CLK t RR RESET Q M9999-051006 [email protected] or (408) 955-1690 4 Precision Edge® SY89312V Micrel, Inc. INPUT INTERFACE APPLICATIONS Single-Ended CLK SY89312V VCC /CLK VBB 0.01µF Figure 1. Single-Ended LVPECL Input (Terminating Unused Input) LVPECL OUTPUT INTERFACE APPLICATIONS VCC VCC R1 R1 VCC VCC ZO = 50Ω ZO = 50Ω ZO = 50Ω 50Ω VCC —2V R2 50Ω R2 VCC = 3.3V; Rpd = 50Ω VCC = 5V; Rpd = 100Ω VCC = 3.3V; R1 = 130Ω, R2 = 82Ω VCC = 5V; R1 = 83Ω, R2 = 125Ω VCC VCC VCC R1 R1 R3 VCC ZO = 50Ω R2 VCC —2V Rpd Figure 2b. Three Resistor “Y Termination” Figure 2a. Parallel Thevenin-Equivalent Termination R2 R4 VCC —1.3V VCC = 3.3V; R1 = 130Ω, R2 = 82Ω, R3 = 1kΩ, R4 = 1.6kΩ, VCC = 5V; R1 = 83Ω, R2 = 125Ω, R3 = 1kΩ, R4 = 2.8kΩ, Figure 2c. Terminating Unused I/O M9999-051006 [email protected] or (408) 955-1690 VCC ZO = 50Ω 5 C (Optional) 0.01µF Precision Edge® SY89312V Micrel, Inc. 8 LEAD ULTRA-SMALL EPAD-MicroLeadFrame® (MLF-8) Package EP- Exposed Pad Die CompSide Island Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane PCB Thermal Consideration for 8-Pin MLF® Package Package Notes: 1. Package meets Level 2 qualification. 2. All parts are dry-packaged before shipment. 3. Exposed pads must be soldered to the most negative plane, equivalent to device VEE, for proper thermal management. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 TEL + 1 (408) 944-0800 FAX + 1 (408) 474-100 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. M9999-051006 [email protected] or (408) 955-1690 6