Precision Edge® PrecisionSY100EL15L Edge® 3.3V 1:4 CLOCK DISTRIBUTION Micrel, Inc. SY100EL15L FEATURES ■ ■ ■ ■ ■ ■ ■ 3.3V power supply 50ps output-to-output skew Low power Synchronous enable/disable Multiplexed clock input 75KΩ internal input pull-down resistors Available in 16-pin SOIC package Precision Edge® DESCRIPTION The SY100EL15L is a low skew 1:4 clock distribution IC designed explicitly for low skew clock distribution applications. The device can be driven by either a differential or single-ended ECL or, if positive power supplies are used, PECL input signal. If a single-ended input is to be used the VBB output should be connected to the CLK input and bypassed to ground via a 0.01µF capacitor. The VBB output is designed to act as the switching reference for the input of the EL15 under singleended input conditions. As a result, this pin can only source/sink up to 0.5mA of current. The EL15 features a multiplexed clock input to allow for the distribution of a lower speed scan or test clock along with the high speed system clock. When LOW (or left open and pulled LOW by the input pull-down resistor) the SEL pin will select the differential clock input. The common enable (EN) 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 internal flip flop is clocked on the falling edge of the input clock, therefore all associated specification limits are referenced to the negative edge of the clock input. When both differential inputs are left open, CLK input will pull down to VEE and CLK input will bias around VCC/2. PIN NAMES TRUTH TABLE Pin Function CLK SCLK SEL EN Q CLK Differential Clock Inputs L X L L L SCLK Synchronous Clock Input H X L L H EN Synchronous Enable X L H L L SEL Clock Select Input X H H L H VBB Reference Output X X X H L* Q0-3 Differential Clock Outputs * On next negative transition of CLK or SCLK Precision Edge is a registered trademark of Micrel, Inc. M9999-031306 [email protected] or (408) 955-1690 Rev.: D 1 1 Amendment: /0 Issue Date: March 2006 Precision Edge® SY100EL15L Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information(1) Package Type Operating Range Package Marking Lead Finish SY100EL15LZC Z16-2 Commercial SY100EL15LZC Sn-Pb SY100EL15LZCTR(2) Z16-2 Commercial SY100EL15LZC Sn-Pb SY100EL15LZI Z16-2 Industrial SY100EL15LZI Sn-Pb SY100EL15LZITR(2) Z16-2 Industrial SY100EL15LZI Sn-Pb SY100EL15LZG(3) Z16-2 Industrial SY100EL15LZG with Pb-Free bar-line indicator Pb-Free NiPdAu SY100EL15LZGTR(2, 3) Z16-2 Industrial SY100EL15LZG with Pb-Free bar-line indicator Pb-Free NiPdAu Part Number 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 is recommended for new designs. VCC 16 EN SCLK CLK CLK VBB 15 14 13 1 SEL VEE 10 9 12 11 6 7 8 Q2 Q3 Q3 0 D Q 1 2 3 4 5 Q0 Q0 Q1 Q1 Q2 16-Pin SOIC (Z16-2) M9999-031306 [email protected] or (408) 955-1690 2 Precision Edge® SY100EL15L Micrel, Inc. ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating Value Unit VEE Power Supply (VCC = 0V) –8.0 to 0 VDC VIN Input Voltage (VCC = 0V) 0 to –6.0 VDC IOUT Output Current –Continuous 50 mA –Surge 100 TLEAD Lead Temperature (soldering, 20sec.) TA Operating Temperature Range +260 °C –40 to +85 °C Notes: 1. Absolute maximum rating, beyond which, device life may be impaired, unless otherwise specified on an individual data sheet. 2. Parametric values specified at: 3 volt Power Supply Range 100EL15L Series –3.0V to –3.8V DC ELECTRICAL CHARACTERISTICS VEE = 3.3V ±10%; VCC = GND(1) TA = –40°C Symbol TA = 0°C TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Typ. Max. Min. Max. Unit Output HIGH Voltage(2) –1085 –880 –1025 –880 –1025 –955 –880 –1025 –880 mV Output LOW Voltage(2) –1830 –1555 –1810 –1620 –1810 –1705 –1620 –1810 –1620 mV Output HIGH Voltage(3) –1095 — –1035 — –1035 — — –1035 — mV VOLA Output LOW Voltage(3) — –1555 — –1610 — — –1610 — –1610 mV VIH Input HIGH Voltage –1165 –880 –1165 –880 –1165 — –880 –1165 –880 mV VIL Input LOW Voltage –1810 –1475 –1810 –1475 –1810 — –1475 –1810 –1475 mV IIH Input High Current — 150 — 150 — — 150 — 150 µA 0.5 –300 — — 0.5 –300 — — 0.5 –300 — — 0.5 –300 — — µA — — 35 — 35 — 25 35 — 38 mA –1.38 –1.26 –1.38 –1.26 –1.38 — –1.26 –1.38 –1.26 V VOH VOL VOHA IIL Parameter Input LOW Current(4) CLK IEE Power Supply Current VBB Output Reference Voltage Notes: 1. This table replaces the three traditionally seen in ECL 100K data books. Outputs are terminated through a 50Ω resistor to –2.0V. 2. VIN = VIH(Max) or VIL(Min). 3. VIN = VIH(Min) or VIL(Max). 4. VIN = VIL(Max). M9999-031306 [email protected] or (408) 955-1690 3 Precision Edge® SY100EL15L Micrel, Inc. AC ELECTRICAL CHARACTERISTICS VEE = 3.3V ±10%; VCC = GND(1) TA = –40°C Symbol tPD TA = 0°C TA = +25°C TA = +85°C Parameter Min. Max. Min. Max. Min. Typ. Max. Min. Max. Unit Propagation Delay CLK to Q (Diff) CLK to Q (SE) SCLK to Q 460 410 410 660 710 710 470 420 420 670 720 720 470 420 420 — — — 670 720 720 500 450 470 700 750 750 — — 200 50 — — 200 50 — — — — 200 50 — — 200 50 ps ps tskew Part-to-Part Skew(1) Within-Device Skew tS Setup Time EN 150 — 150 — 150 — — 150 — ps tH Hold Time EN 400 — 400 — 400 — — 400 — ps VPP Minimum Input Swing CLK 250 — 250 — 250 — — 250 — mV –2.0 –1.8 –0.4 –0.4 –2.1 –1.9 –0.4 –0.4 –2.1 –1.9 — — –0.4 –0.4 –2.1 –1.9 –0.4 –0.4 375 625 325 575 325 — 575 325 575 VCMR tr tf Range(2) Common Mode VPP < 500mV VPP ≥ 500mV Output Rise/Fall TimesQ (20% – 80%) mV ps Notes: 1. Skews are specified for identical LOW-to-HIGH or HIGH-to-LOW transitions. 2. VCMR is referenced to the most positive side of the differential input signal. Normal operation is obtained when the input signals are within the VCMR range and the input swing is greater than VPP(Min.) and <1V. The lower end of the VCMR 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)|. M9999-031306 [email protected] or (408) 955-1690 4 Precision Edge® SY100EL15L Micrel, Inc. 16-PIN SOIC .150" WIDE (Z16-2) Rev. 02 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. M9999-031306 [email protected] or (408) 955-1690 5