Micrel, Inc. 3.3V DUAL DIFFERENTIAL LVPECL-TO-LVTTL TRANSLATOR Precision Edge® SY89323L ® Precision Edge SY89323L FEATURES ■ ■ ■ ■ ■ ■ ■ 3.3V power supply 1.9ns typical propagation delay Maximum frequency > 275MHz Differential LVPECL inputs 24mA LVTTL outputs Flow-through pinouts Internal input resistors: pull-down on IN, pull-down and pull-up on /IN ■ Q output will default LOW with inputs open ■ Available in ultra-small 8-pin MLF® (2mm × 2mm) package Precision Edge® DESCRIPTION The SY89323L is a dual differential LVPECL-to-LVTTL translator. Because LVPECL (Low Voltage Positive ECL) levels are used, only +3.3V and ground are required. The SY89323L is functionally equivalent to the SY100EPT23L, but in an ultra-small 8-pin MLF® package that features a 70% smaller footprint. The ultra-small package and the dual gate design of the SY89823L make it ideal for applications that require the translation of a clock and data signal in a minimal space. The inputs are compatible with 10k and 100k input levels and any standard differential LVPECL input referenced to a VCC of 3.3V. BLOCK DIAGRAM INO Q0 /INO LVPECL LVTTL INI Q1 /INI 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® SY89323L Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information IN0 1 /IN0 2 /IN1 INI 8 7 LVPECL LVTTL VCC Part Number Package Type Operating Range Package Marking Lead Finish Q0 SY89323LMITR MLF-8 Industrial 323 Sn-Pb SY89323LMGTR(1) MLF-8 Industrial 323 with Pb-Free bar-line indicator Pb-Free NiPdAu 3 6 Q1 4 5 GND Note: MLF® 8-Pin Ultra-Small Outline (2mm x 2mm) 1. Pb-Free package is recommended for new designs. PIN DESCRIPTION Pin Number Pin Name Type 1, 4 IN0, IN1 ECL Input Differential PECL/ECL Input: Internal 75kΩ pull-down resistor. If left open, pin defaults LOW. Q output will be LOW. See “Input Interface Applications” section for single-ended inputs. 2, 3 /IN0, /IN1 ECL Input Differential PECL/ECL Input: Internal 75kΩ pull-up and pull-down resistors. If left floating, pin defaults to VCC/2. When not used, this input can be left open. See “Input Interface Applications” section for single-ended inputs. 7, 6 Q0, Q1 LVTTL Output 8 VCC VCC Power 5 GND, Exposed Pad Ground M9999-051006 [email protected] or (408) 955-1690 Pin Function Single-ended LVTTL Outputs: Default to LOW if IN inputs left open. Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors. GND and exposed pad must be tied to ground plane. 2 Precision Edge® SY89323L Micrel, Inc. Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VCC) .................................. –0.5V to +3.8V Input Voltage (VIN) ......................................... –0.5V to VCC LVPECL Output Current (IOUT) Continuous ............................................................. 50mA Surge .................................................................... 100mA Input Current Source or sink current on IN, /IN .......................... ±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, Note 3 MLF® (θJA) Still-Air ................................................................. 93°C/W 500lfpm ............................................................... 87°C/W MLF® (ΨJB) Junction-to-Board ................................................ 60°C/W LVTTL DC ELECTRICAL CHARACTERISTICS TA = –40oC to +85°C, unless otherwise noted. Symbol Parameter Condition Min Typ Max Units VOH Output HIGH Voltage IOH = –3.0mA 2.0 — — V VOL Output LOW Voltage IOL = 24mA — — 0.5 V ICC Power Supply Current — — 30 mA IOS Output Short Circuit Current –80 — –240 mA VOUT = 0V LVPECL DC ELECTRICAL CHARACTERISTICS VCC = +3.3V±10%; TA = –40oC to +85°C, unless otherwise noted. Symbol Parameter VIH Condition Min Typ Max Units Input HIGH Voltage VCC–1.230 – VCC–0.735 V VIL Input LOW Voltage VCC–1.950 – VCC–1.475 V VIHCMR Input HIGH Common Mode Range VEE+1.5 – VCC V VPP Minimum Peak-to-Peak Input IIH Input HIGH Current IIL Input LOW Current Note 4 200 mV – – 150 µA IN 0.5 – – µA /IN –300 – – 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. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. 4. VIHCMR (min) varies 1:1 with VEE, max varies 1:1 with VCC. M9999-051006 [email protected] or (408) 955-1690 3 Precision Edge® SY89323L Micrel, Inc. AC ELECTRICAL CHARACTERISTICS VCC = +3.3V±10%; CL = 20pF, TA = –40oC to +85°C, unless otherwise noted. All parameters guaranteed by design and characterization. Symbol Parameter Condition Min Typ Max Units fMAX Maximum Input Frequency Notes 1, 2 275 — — MHz tpd Propagation Delay 1.5 — 2.5 ns tskpp Part-to-Part Skew Notes 3 — — 0.5 ns tskew++ Within-Device Skew Notes 4 — — 0.3 ns tskew– – Within-Device Skew Notes 5 — — 0.3 ns tjitter Cycle-to-Cycle Note 6 2 psRMS Total Jitter Note 7 25 psPP 1.0 ns tr tf Output Rise/Fall Time 1.0V to 2.0V 0.5 — Notes: 1. Frequency at which guaranteed for functionality. VOH and VOL levels are guaranteed at DC only. 2. The fMAX value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater. 3. Device-to-Device Skew considering HIGH-to-HIGH transitions at common VCC level. 4. Within-Device Skew considering HIGH-to -HIGH transitions at common VCC level. 5. Within-Device Skew considering LOW-to-LOW transitions at common VCC level. 6. Cycle-to-cycle jitter definition: The variation of periods between adjacent cycles, Tn – Tn–1,where T is the time between rising edges of the output signal. 7. Total jitter definition: with an ideal clock input of frequency ≤ fMAX, no more than one output edge in 1012 output edge will deviate by more than the specified peak-to-peak jitter value. INPUT INTERFACE APPLICATIONS +3.3V 1kΩ +3.3V IN VCC –1.3V 1.6kΩ Single-Ended Input (Terminating unused input) M9999-051006 [email protected] or (408) 955-1690 4 Precision Edge® SY89323L Micrel, Inc. 8-PIN 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 a ground for proper thermal management. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB 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 5