MOTOROLA SEMICONDUCTOR TECHNICAL DATA 1:4 Clock Distribution Chip MC10EL15 MC100EL15 The MC10EL/100EL15 is a low skew 1:4 clock distribution chip 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 single-ended 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 pulldown resistor) the SEL pin will select the differential clock input. 16 1 D SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05 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. • • • • • 50ps Output-to-Output Skew Synchronous Enable/Disable PIN DESCRIPTION Multiplexed Clock Input 75kΩ Internal Input Pulldown Resistors >1000V ESD Protection LOGIC DIAGRAM AND PINOUT ASSIGNMENT VCC EN 16 15 SCLK CLK 14 13 1 CLK VBB SEL VEE 12 11 10 9 0 D Q 1 2 3 4 5 6 7 8 Q0 Q0 Q1 Q1 Q2 Q2 Q3 Q3 PIN FUNCTION CLK SCLK EN SEL VBB Q0–3 Diff Clock Inputs Scan Clock Input Sync Enable Clock Select Input Reference Output Diff Clock Outputs FUNCTION TABLE CLK SCLK SEL EN Q L H X X X X X L H X L L H H X L L L L H L H L H L* * On next negative transition of CLK or SCLK 5/95 Motorola, Inc. 1996 3–1 REV 2 MC10EL15 MC100EL15 ABSOLUTE MAXIMUM RATINGS1 Symbol Characteristic Rating Unit VEE Power Supply (VCC = 0V) –8.0 to 0 VDC VI Input Voltage (VCC = 0V) 0 to –6.0 VDC Iout Output Current 50 100 mA TA Operating Temperature Range –40 to +85 °C Continuous Surge VEE Operating Range1,2 –5.7 to –4.2 1. Absolute maximum rating, beyond which, device life may be impaired, unless otherwise specified on an individual data sheet. 2. Parametric values specified at: 100EL Series: –4.20V to –5.50V 10EL Series: –4.94V to –5.50V V 10EL SERIES DC CHARACTERISTICS (VEE = VEE(min) – VEE(max); VCC = GND1) –40°C Symbol Characteristic Min 0°C Max Min 25°C Max Min 85°C Max Min Max Unit VOH Output HIGH Voltage –1080 –890 –1020 –840 –980 –810 –910 –720 mV VOL Output LOW Voltage –1950 –1650 –1950 –1630 –1950 –1630 –1950 –1595 mV VIH Input HIGH Voltage –1230 –890 –1170 –840 –1130 –810 –1060 –720 mV VIL Input LOW Voltge –1950 –1500 –1950 –1480 –1950 –1480 –1950 –1445 mV IIL Input LOW Current 0.5 — 0.5 — 0.5 — 0.3 — µA 1. 10EL circuits are designed to meet the DC specifications shown in the table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and transverse airflow greater than 500lfpm is maintained. Outputs are terminated through a 50Ω resistor to –2.0V except where otherwise specified on the individual data sheets. 100EL SERIES DC CHARACTERISTICS (VEE = VEE(min) – VEE(max); VCC = GND1) –40°C Symbol Characteristic 0°C to 85°C Min Typ Max Min Typ Max Unit Condition VOH Output HIGH Voltage –1085 –1005 –880 –1025 –955 –880 mV VIN = VIH(max) VOL Output LOW Voltage –1830 –1695 –1555 –1810 –1705 –1620 mV or VIL(min) VOHA Output HIGH Voltage –1095 — — –1035 — — mV VIN = VIH(max) VOLA Output LOW Voltage — — –1555 — — –1610 mV or VIL(min) VIH Input HIGH Voltage –1165 — –880 –1165 — –880 mV VIL Input LOW Voltge –1810 — –1475 –1810 — –1475 mV IIL Input LOW Current 0.5 — — 0.5 — — µA VIN = VIL(max) 1. This table replaces the three tables traditionally seen in ECL 100K data books. The same DC parameter values at VEE = –4.5V now apply across the full VEE range of –4.2V to –5.5V. Outputs are terminated through a 50Ω resistor to –2.0V except where otherwise specified on the individual data sheets. MOTOROLA 3–2 ECLinPS and ECLinPS Lite DL140 — Rev 3 MC10EL15 MC100EL15 AC/DC CHARACTERISTICS (VEE = VEE(min) to VEE(max); VCC = GND) –40°C Symbol IEE Characteristic Min Power Supply Current 10EL 100EL Typ Max 25 25 35 35 –1.30 –1.26 Min 25°C Typ Max 25 25 35 35 –1.38 –1.38 –1.27 –1.26 Min Typ Max 25 25 35 35 Min Max Unit 25 25 35 38 mA IIH Input High Current tPLH tPHL Propagation Delay CLK to Q (Diff) CLK to Q (SE) SCLK to Q tSKEW Part-to-Part Skew Within-Device Skew1 tS Setup Time EN 150 150 150 150 ps tH HoldTime EN 400 400 400 400 ps VPP Minimum Input Swing CLK2 250 VCMR Common CLK3 –2.0 Range 150 –1.25 –1.31 –1.26 –1.38 Typ Output Reference 10EL Voltage 100EL 150 –1.35 –1.38 85°C VBB Mode –1.43 –1.38 0°C 150 –1.19 –1.26 V 150 µΑ ps 460 410 410 660 710 710 470 420 420 610 720 720 200 50 200 50 250 –0.4 470 420 420 610 720 720 200 50 250 –2.0 –0.4 500 450 470 –2.0 700 750 750 200 50 250 –0.4 –2.0 ps mV –0.4 V tr Output Rise/Fall Times Q 325 575 325 575 325 575 ps tf (20% – 80%) 1. Skews are specified for identical LOW-to-HIGH or HIGH-to-LOW transitions. 2. Minimum input swing for which AC parameters guaranteed. The device has a DC gain of ≈40. 3. 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 VPPmin and 1V. The lower end of the CMR range is dependent on VEE and is equal to VEE + 2.5V. ECLinPS and ECLinPS Lite DL140 — Rev 3 3–3 MOTOROLA MC10EL15 MC100EL15 OUTLINE DIMENSIONS D SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05 ISSUE J –A– 16 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 9 –B– 1 P 8 PL 0.25 (0.010) 8 B M S G R K F X 45 _ C –T– SEATING PLANE J M D 16 PL 0.25 (0.010) M T B S A S DIM A B C D F G J K M P R MILLIMETERS MIN MAX 9.80 10.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.229 0.244 0.010 0.019 Motorola reserves the right to make changes without further notice to any products herein. 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