Micrel, Inc. Precision Edge® ® SY89250V Precision Edge ENHANCED DIFFERENTIAL RECEIVER SY89250V FEATURES ■ ■ ■ ■ ■ ■ ■ ■ 3.3V and 5V power supply options 250ps propagation delay Very high voltage gain Ideal for Pulse Amplifier and Limiting Amplifier applications Data synchronous Enable/Disable (/EN) on QHG and /QHG provides for complete glitchless gating of the outputs Ideal for gating timing signals Complete solution for high quality, high frequency crystal oscillator applications Available in an ultra-small 8-pin (2mm × 2mm) MLF™ package Precision Edge® DESCRIPTION The SY89250V is a differential PECL/ECL receiver/buffer in a space saving (2mm × 2mm) MLF™ package. The device is functionally equivalent to the SY100EL16VC, but features a 70% smaller footprint. It provides a VBB output for either single-ended application or as a DC bias for AC-coupling to the device. The SY89250V provides an /EN input which is synchronized with the data input (D) signal in a way that provides glitchless gating of the QHG and /QHG outputs. When the /EN signal is LOW, the input is passed to the outputs and the data output equals the data input. When the data input is HIGH and the /EN goes HIGH, it will force the QHG LOW and the /QHG HIGH on the next negative transition of the data input. If the data input is LOW when the /EN goes HIGH, the next data transition to a HIGH is ignored and QHG remains LOW and /QHG remains HIGH. The next positive transition of the data input is not passed on to the data outputs under these conditions. The QHG and /QHG outputs remain in their disabled state as long as the /EN input is held HIGH. The /EN input has no influence on the /Q output and the data input is passed on (inverted) to this output whether /EN is HIGH or LOW. This configuration is ideal for crystal oscillator applications, where the oscillator can be free running and gated on and off synchronously without adding extra counts to the output. All support documentation can be found on Micrel’s web site at www.micrel.com. APPLICATIONS ■ Oscillator modules BLOCK DIAGRAM FUNCTIONAL CROSS REFERENCE /Q 1 8 VCC D 2 7 QHG 6 /QHG 5 VEE VBB 3 VBB /EN 4 LEN Q Micrel Part Number PECL/ECL Functional Cross SY89250V 100k SY100EL16VC OE LATCH D Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc. M9999-052505 [email protected] or (408) 955-1690 Rev.: B 1 Amendment: /0 Issue Date: May 2005 Precision Edge® SY89250V Micrel, Inc. PACKAGE/ORDERING INFORMATION /Q D VBB /EN 1 8 2 7 3 6 4 5 VCC QHG /QHG VEE Ordering Information(1) 8-Pin MLF™ (Ultra-Small Outline) Part Number Package Type Operating Range Package Marking Lead Finish SY89250VMI MLF-8 Industrial 250 Sn-Pb SY89250VMITR(2) MLF-8 Industrial 250 Sn-Pb SY89250VMG MLF-8 Industrial 250 with Pb-Free bar-line indicator Pb-Free NiPdAu SY89250VMGTR(2) MLF-8 Industrial 250 with Pb-Free bar-line indicator Pb-Free NiPdAu Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC electricals only. 2. Tape and Reel. PIN DESCRIPTION Pin Number Pin Name Type Pin Function 1 /Q 100k Single-Ended PECL/ECL Feedback Output. 2 D 100k Single-Ended PECL/ECL Input: The signal input includes an internal 75kΩ pull-down ECL Input resistor. If input is left open, Q output will default to LOW. See “Input Interface Applications” section for single-ended inputs. 3 VBB Reference Output Voltage Bias Voltage: VCC–1.3V. Used as reference voltage when AC-coupling to the D input. Max sink/source is ±0.5mA. 4 /EN Enable Input /EN Input which is synchronized with data input (D) signal in a way that provides glitchless gating of QHG and /QHG outputs. Includes internal 75kΩ pull-down resistor. Default is LOW 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. 6, 7 /QHG, QHG 100k ECL Output Differential PECL/ECL Output: Defaults to LOW if D inputs left open. 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. TRUTH TABLE /EN QHG Output 0 Data 1 Logic Low M9999-052505 [email protected] or (408) 955-1690 2 Precision Edge® SY89250V Micrel, Inc. Absolute Maximum Ratings(1) Operating Ratings(2) Power Supply Voltage (VCC) ....................... –0.5V to +6.0V ECL Input Voltage (VIN) ............................ 0V to VCC +0.5V Voltage Applied to Output at HIGH State (VOUT) ........................................................ –0.5V to VCC Current Applied to Output at LOW State (IOUT) .......................................... Twice the rated IOL mA Lead Temperature (soldering, 20 sec.) ..................... 260°C Storage Temperature (TS) ....................... –65°C to +150°C Power Supply Voltage |VCC–VEE| .... 3.3V ±10% or 5V ±10% Ambient Temperature (TA) ......................... –40°C to +85°C Package Thermal Resistance,(3) MLF™ (θJA) Still-Air ............................................................. 93°C/W MLF™ (ψJB), ....................................................... 60°C/W DC ELECTRICAL CHARACTERISTICS TA = –40°C to +85°C; unless otherwise stated. Symbol Parameter Condition Min Typ Max Units VEE Power Supply |VCC–VEE| |VCC–VEE| 3.0 4.5 3.3 5.0 3.6 5.5 V V IEE Power Supply Current 46 mA IIH Input HIGH Current 150 µA VBB Output Reference Voltage VCC –1.38 VCC –1.32 VCC –1.26 V DC ELECTRICAL CHARACTERISTICS VCC = +3.3V ±10% or +5V ±10% and VEE = 0V; VCC = 0V and VEE = –3.3V ±10% or –5V ±10%; TA = –40°C to +85°C; unless otherwise stated. Symbol Parameter Condition VOH Output HIGH Voltage Note 4 VOL Output LOW Voltage Note 4 VIH Min Typ Max Units VCC–1.085 VCC–0.880 V VCC–1.830 VCC–1.555 V Input HIGH Voltage VCC–1.165 VCC–0.880 V VIL Input LOW Voltage VCC–1.810 VCC–1.475 V VBB Output Reference Voltage VCC–1.38 VCC–1.26 V VPP Minimum Input Swing IIH Input HIGH Current IIL Input LOW Current 150 mV 150 0.5 µA 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. Output loaded with 50Ω to VCC–2V. M9999-052505 [email protected] or (408) 955-1690 3 Precision Edge® SY89250V Micrel, Inc. AC ELECTRICAL CHARACTERISTICS VEE = VEE(min) to VEE(max); VCC = GND; TA = –40°C to +85°C; unless otherwise stated. Symbol Parameter tpd Propagation Delay to: Q, /Q Output QHG, /QHG Output Condition Min Typ D (Diff) D (SE) D (Diff) D (SE) Max Units 380 430 730 780 ps ps ps ps tS Set-Up Time /EN 150 ps tH Hold Time /EN 150 ps tSKEW Duty Cycle Skew VPP (Diff) Note 5 5 Minimum Input Swing /EN Note 6 150 VCMR Common Mode Range /EN Note 7 –1.3 tr, tf Output Q Rise/Fall Times (20% to 80%) At full output swing 100 20 ps mV 225 –0.4 V 350 ps Notes: 5. Duty cycle skew is the difference between a tpd propagation delay through a device. 6. Minimum input swing for which AC parameters are guaranteed. The device has a DC gain of ≈ 40 to Q, /Q outputs and a DC gain of ≈ 200 or higher to /QHG, QHG outputs. 7. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies between VPP(min) and 1V. The lower end of the CMR range varies 1:1 with VEE. The numbers in the spec table assume a nominal VEE = –3.3V. Note for PECL operation, the VCMR(min) will be fixed at 3.3V – |VCMR(min)|. TIMING DIAGRAM D tH tS /EN Q QHG M9999-052505 [email protected] or (408) 955-1690 4 Precision Edge® SY89250V Micrel, Inc. OUTPUT INTERFACE APPLICATIONS VCC VCC R1 R1 VCC VCC ZO = 50Ω 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 Rpd C (Optional) 0.01µF Figure 1b. Three Resistor “Y Termination” Figure 1a. Parallel Thevenin-Equivalent Termination VCC VCC VCC R1 R3 R1 VCC ZO = 50Ω R2 VCC —2V R4 R2 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 1c. Terminating Unused I/O RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function Data Sheet Link SY89306/316V 3.3V/5V 2.5GHz PECL/ECL Differential Receiver/Buffer www.micrel.com/product-info/products/sy89306-316v.shtml SY89206/216V 3.3V/5V 1GHz PECL/ECL Differential Receiver/Buffer www.micrel.com/product-info/products/sy89206-216v.shtml HBW Solutions New Products and Applications www.micrel.com/product-info/products/solutions.shtml M9999-052505 [email protected] or (408) 955-1690 5 Precision Edge® SY89250V 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 a ground for proper thermal management. 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. © 2005 Micrel, Incorporated. M9999-052505 [email protected] or (408) 955-1690 6