SEMICONDUCTOR TECHNICAL DATA The MC100EP221 is a low skew 1–to–20 differential driver, designed with clock distribution in mind. It accepts two clock sources into an input multiplexer. The input signals can be either differential or single–ended if the VBB output is used. The selected signal is fanned out to 20 identical differential outputs. • • • • • • • LOW–VOLTAGE 1:20 DIFFERENTIAL ECL/PECL CLOCK DRIVER 150ps Part–to–Part Skew 50ps Output–to–Output Skew Differential Design VBB Output Voltage and Temperature Compensated Outputs Low Voltage VEE Range of –2.375 to –3.8V 75kΩ Input Pulldown Resistors The EP221 is specifically designed, modeled and produced with low skew as the key goal. Optimal design and layout serve to minimize gate– to–gate skew within a device, and empirical modeling is used to determine process control limits that ensure consistent tpd distributions from lot to lot. The net result is a dependable, guaranteed low skew device. FA SUFFIX 52–LEAD TQFP PACKAGE CASE 848D–03 To ensure that the tight skew specification is met it is necessary that both sides of the differential output are terminated into 50Ω, even if only one side is being used. In most applications, all ten differential pairs will be used and therefore terminated. In the case where fewer than ten pairs are used, it is necessary to terminate at least the output pairs on the same package side as the pair(s) being used on that side, in order to maintain minimum skew. Failure to do this will result in small degradations of propagation delay (on the order of 10–20ps) of the output(s) being used which, while not being catastrophic to most designs, will mean a loss of skew margin. The MC100EP221, as with most other ECL devices, can be operated from a positive VCC supply in PECL mode. This allows the EP221 to be used for high performance clock distribution in +3.3V or +2.5V systems. Designers can take advantage of the EP221’s performance to distribute low skew clocks across the backplane. In a PECL environment, series or Thevenin line terminations are typically used as they require no additional power supplies. For more information on using PECL, designers should refer to Motorola Application Note AN1406/D. This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. 2/97 Motorola, Inc. 1997 1 REV 0.1 MC100EP221 39 38 37 36 VCCO Q11B Q11 Q10B Q9B Q10 Q9 Q8B Q8 Q7B Q6B Q7 Q6 Pinout: 52–Lead TQFP (Top View) 35 34 33 32 31 30 29 28 27 26 Q12 41 25 Q12B Q5 42 24 Q13 Q4B 43 23 Q13B Q4 44 22 Q14 Q3B 45 21 Q14B 20 Q15 VCCO 40 Q5B MC100EP211 16 Q17 Q0B 51 15 Q17B Q0 52 14 VCCO 2 3 4 5 6 7 8 9 10 11 12 13 Q18 1 Q19 50 Q18B Q16B Q1 Q19B Q1B 17 VEE Q16 49 CLK1 CLK1B 18 VBB 48 CLK0B Q15B Q2 CLK0 19 VCC 47 CLKSEL Q2B VCCO Q3 46 PIN NAMES Pins CLKn, CLKn Q0:19, Q0:19 CLK_SEL VBB Function Differential Input Pairs Differential Outputs Active Clock Select Input VBB Output FUNCTION CLK_SEL Active Input 0 1 CLK0, CLK0 CLK1, CLK1 LOGIC SYMBOL CLK0 CLK0 CLK1 0 Q0 Q0 1 16 CLK1 Q1:18 Q1:18 CLK_SEL Q19 Q19 MOTOROLA 2 TIMING SOLUTIONS BR1333 — Rev 6 MC100EP221 ECL DC CHARACTERISTICS –40°C Symbol 0°C 25°C 85°C Characteristic Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit VOH Output HIGH Voltage –1.025 –0.955 –0.880 –1.025 –0.955 –0.880 –1.025 –0.955 –0.880 –1.025 –0.955 –0.880 V VOL Output LOW Voltage –1.810 –1.705 –1.620 –1.810 –1.705 –1.620 –1.810 –1.705 –1.620 –1.810 –1.705 –1.620 V VIH Input HIGH Voltage –1.165 –0.880 –1.165 –0.880 –1.165 –0.880 –1.165 –0.880 V VIL Input LOW Voltage –1.810 –1.475 –1.810 –1.475 –1.810 –1.475 –1.810 –1.475 V VBB Output Reference Voltage –1.38 –1.26 –1.38 –1.26 –1.38 –1.26 –1.38 –1.26 V VEE Power Supply Voltage –2.375 –3.8 –2.375 –3.8 –2.375 –3.8 –2.375 –3.8 V IIH Input HIGH Current 150 µA IEE Power Supply Current 150 150 150 mA PECL DC CHARACTERISTICS –40°C Symbol VOH Characteristic Output HIGH Voltage 0°C 25°C 85°C Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit 2.275 2.345 2.420 2.275 2.345 2.420 2.275 2.345 2.420 2.275 2.345 2.420 V 1.490 1.595 1.680 1.490 1.595 1.680 1.490 1.595 1.680 1.490 1.595 1.680 V 2.135 2.420 2.135 2.420 2.135 2.420 2.135 2.420 V 1.490 1.825 1.490 1.825 1.490 1.825 1.490 1.825 V 2.04 1.92 2.04 1.92 2.04 1.92 2.04 V 3.8 2.375 3.8 2.375 3.8 2.375 (NO TAG) VOL Output LOW Voltage (NO TAG) VIH Input HIGH Voltage (NO TAG) VIL Input LOW Voltage (NO TAG) VBB Output Reference Voltage (Note NO TAG) 1.92 VCC Power Supply Voltage 2.375 IIH Input HIGH Current IEE Power Supply Current 150 150 150 3.8 V 150 µA mA 1. These values are for VCC = 3.3V. Level Specifications will vary 1:1 with VCC. AC CHARACTERISTICS (VEE = VEE (min) to VEE (max); VCC = VCCO = GND) –40°C Symbol tPLH tPHL Characteristic Min Typ 0°C Max Min 25°C Typ Max Min Propagation Delay to Output IN (differential) IN (single–ended) tskew Within–Device Skew Part–to–Part Skew (Diff) fmax Maximum Input Frequency VPP Minimum Input Swing VCMR Common Mode Range tr/tf Output Rise/Fall Time TIMING SOLUTIONS BR1333 — Rev 6 Typ 85°C Max Min Typ Max Unit Condition ps 500 500 50 150 50 150 1.5 500 50 150 1.5 1.5 500 500 50 150 ps 1.5 GHz 500 mV V 200 200 200 3 200 ps 20%–80% MOTOROLA MC100EP221 OUTLINE DIMENSIONS FA SUFFIX PLASTIC TQFP PACKAGE CASE 848D–03 ISSUE C 4X 4X TIPS 0.20 (0.008) H L–M N –X– X=L, M, N 0.20 (0.008) T L–M N 52 CL 40 1 AB 39 3X VIEW Y AB –L– –M– B B1 13 VIEW Y V V1 J 26 –N– A1 BASE METAL F PLATING 27 14 ÇÇÇÇ ÉÉÉÉ ÉÉÉÉ ÇÇÇÇ 0.13 (0.005) S1 M D T L–M U S N S SECTION AB–AB ROTATED 90_ CLOCKWISE A S 4X C θ2 0.10 (0.004) T –H– –T– SEATING PLANE 4X θ3 VIEW AA 0.05 (0.002) S W θ1 2XR R1 0.25 (0.010) C2 θ GAGE PLANE K C1 E Z VIEW AA MOTOROLA G 4 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DATUM PLANE –H– IS LOCATED AT BOTTOM OF LEAD AND IS COINCIDENT WITH THE LEAD WHERE THE LEAD EXITS THE PLASTIC BODY AT THE BOTTOM OF THE PARTING LINE. 4. DATUMS –L–, –M– AND –N– TO BE DETERMINED AT DATUM PLANE –H–. 5. DIMENSIONS S AND V TO BE DETERMINED AT SEATING PLANE –T–. 6. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. ALLOWABLE PROTRUSION IS 0.25 (0.010) PER SIDE. DIMENSIONS A AND B DO INCLUDE MOLD MISMATCH AND ARE DETERMINED AT DATUM PLANE -H-. 7. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. DAMBAR PROTRUSION SHALL NOT CAUSE THE LEAD WIDTH TO EXCEED 0.46 (0.018). MINIMUM SPACE BETWEEN PROTRUSION AND ADJACENT LEAD OR PROTRUSION 0.07 (0.003). DIM A A1 B B1 C C1 C2 D E F G J K R1 S S1 U V V1 W Z θ θ1 θ2 θ3 MILLIMETERS MIN MAX 10.00 BSC 5.00 BSC 10.00 BSC 5.00 BSC ––– 1.70 0.05 0.20 1.30 1.50 0.20 0.40 0.45 0.75 0.22 0.35 0.65 BSC 0.07 0.20 0.50 REF 0.08 0.20 12.00 BSC 6.00 BSC 0.09 0.16 12.00 BSC 6.00 BSC 0.20 REF 1.00 REF 0_ 7_ ––– 0_ 12 _ REF 5_ 13 _ INCHES MIN MAX 0.394 BSC 0.197 BSC 0.394 BSC 0.197 BSC ––– 0.067 0.002 0.008 0.051 0.059 0.008 0.016 0.018 0.030 0.009 0.014 0.026 BSC 0.003 0.008 0.020 REF 0.003 0.008 0.472 BSC 0.236 BSC 0.004 0.006 0.472 BSC 0.236 BSC 0.008 REF 0.039 REF 0_ 7_ ––– 0_ 12 _ REF 13 _ 5_ TIMING SOLUTIONS BR1333 — Rev 6 MC100EP221 Motorola reserves the right to make changes without further notice to any products herein. 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