SEMICONDUCTOR TECHNICAL DATA The MC10ELT/100ELT28 is a differential PECL to TTL translator and a TTL to differential PECL translator in a single package. Because PECL (Positive ECL) levels are used only +5V and ground are required. The small outline 8-lead SOIC package and the dual translation design of the ELT28 makes it ideal for applications which are sending and receiving signals across a backplane. Because the mature MOSAIC 1.5 process is used, low cost can be added to the list of features. The ELT28 is available in both ECL standards: the 10ELT is compatible with positive MECL 10H logic levels while the 100ELT is compatible with positive ECL 100K logic levels. • • • • • • • 8 3.5ns Typical PECL to TTL Propagation Delay 1.2ns Typical TTL to PECL Propagation Delay Differential PECL Inputs/Ouputs Small Outline SOIC Package PNP TTL Inputs for Minimal Loading 24mA TTL Outputs Flow Through Pinouts 1 D SUFFIX PLASTIC SOIC PACKAGE CASE 751-05 LOGIC DIAGRAM AND PINOUT ASSIGNMENT DECL 1 8 VCC 2 7 QTTL DECL PECL PIN DESCRIPTION TTL QECL 3 6 DTTL QECL 4 5 GND PIN FUNCTION QTTL DTTL QECL DECL VCC GND TTL Output TTL Inputs Diff ECL Outputs Diff ECL Inputs +5.0V Supply Ground MAXIMUM RATINGS* Symbol Parameter VCC DC Supply Voltage (Referenced to GND) TA Operating Temperature Range (In Free-Air) Value Unit 7.0 V –40 to 85 °C TSTG Storage Temperature Range –55 to +150 °C * Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. This document contains information on a new product. Specifications and information herein are subject to change without notice. 1/95 Motorola, Inc. 1996 3–1 REV 2 MC10ELT28 MC100ELT28 TTL OUTPUT DC CHARACTERISTICS (VCC = 4.75V to 5.25V; TA = –40°C to 85°C) Symbol Characteristic VOH Output HIGH Voltage VOL Output LOW Voltage ICCH Power Supply Current ICCL Power Supply Current IOS Output Short Circuit Current Min Typ Max Unit 2.4 Condition V IOH = –3.0mA 0.5 V IOL = 24mA 27 40 mA 29 42 mA –60 mA Max Unit 20 µA VIN = 2.7V –150 TTL INPUT DC CHARACTERISTICS (VCC = 4.75V to 5.25V; TA = –40°C to 85°C) Symbol Characteristic Min Typ Condition IIH Input HIGH Current IIHH Input HIGH Current 100 µA VIN = 7.0V IIL Input LOW Current –0.6 mA VIN = 0.5V –1.2 V VIK VIH Input HIGH Voltage VIL Input LOW Voltage 2.0 IIN = –18mA V 0.8 V PECL OUTPUT DC CHARACTERISTICS (VCC = 4.75V to 5.25V; TA = –40°C to 85°C) –40°C Symbol 0°C 25°C 85°C Characteristic Min Max Min Max Min Typ Max Min Max Unit Condition VOH Output HIGH 10ELT1 Voltage 100ELT1 3.920 3.915 4.11 4.12 3.980 3.975 4.16 4.12 4.020 3.975 4.10 4.05 4.19 4.12 4.080 3.975 4.27 4.12 V VCC = 5.0V VOL Output LOW 10ELT1 Voltage 100ELT1 3.05 3.17 3.350 3.445 3.05 3.19 3.37 3.38 3.05 3.19 3.25 3.30 3.37 3.38 3.05 3.19 3.40 3.35 V VCC = 5.0V Max Unit Condition 150 µA 1. Levels will vary 1:1 with VCC. PECL INPUT DC CHARACTERISTICS (VCC = 4.75V to 5.25V; TA = –40°C to 85°C) –40°C Symbol Characteristic Min Max 0°C Min Max Min Typ Max Min Input HIGH Current IIL Input LOW Current 0.5 VCMR Common Mode Range 2.2 VPP Minimum Peak-to-Peak Input1 200 VIH Input HIGH Voltage 10ELT 100ELT 3.770 3.835 4.110 4.120 3.830 3.835 4.16 4.12 3.870 3.835 4.19 4.12 3.930 3.835 4.265 4.120 V VCC = 5.0V VIL Input LOW Voltage 10ELT 100ELT 3.05 3.19 3.500 3.525 3.05 3.19 3.520 3.525 3.05 3.19 3.520 3.525 3.05 3.19 3.550 3.525 V VCC = 5.0V tPLH Prop Delay DECL to QTTL DTTL to QECL 2.0 0.6 5.5 1.2 2.0 0.65 5.5 1.45 2.0 0.9 5.5 1.5 2.0 0.6 5.5 1.35 ns CL = 20pF 1.2 Prop Delay DECL to QTTL DTTL to QECL 2.0 0.4 5.5 1.0 2.0 0.45 5.5 1.05 2.0 0.5 5.5 1.1 2.0 0.7 5.5 1.3 ns CL = 20pF 0.8 tr, tf Rise/Fall Times QECL 0.15 1.5 0.15 1. 200mV input guarantees full logic swing at the output. 1.5 0.15 1.5 0.15 1.5 ns 20% – 80% MOTOROLA 150 85°C IIH tPHL 150 25°C 0.5 VCC 2.2 150 0.5 VCC 200 2.2 VCC 200 3–2 µA 0.5 2.2 VCC 200 V mV ECLinPS and ECLinPS Lite DL140 — Rev 3 MC10ELT28 MC100ELT28 OUTLINE DIMENSIONS D SUFFIX PLASTIC SOIC PACKAGE CASE 751–05 ISSUE P –A– M 1 4 R 0.25 (0.010) 4X –B– X 45 _ B M 5 P 8 NOTES: 1. DIMENSIONS A AND B ARE DATUMS AND T IS A DATUM SURFACE. 2. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 3. DIMENSIONS ARE IN MILLIMETER. 4. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 5. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 6. DIMENSION D DOES NOT INCLUDE MOLD PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. J M_ C F G –T– K SEATING PLANE 8X D 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 4.80 5.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.18 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 Motorola reserves the right to make changes without further notice to any products herein. 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