SK10/100ELT21W Differential PECL to CMOS/TTL or LVPECL to LVCMOS/LVTTL Translator HIGH-PERFORMANCE PRODUCTS Description Features • The SK10/100ELT21W is a single differential PECL to CMOS/TTL or LVPECL to LVCMOS/LVTTL Translator. Since PECL (Positive ECL) levels are used, only +VCC and ground are required. The small outline, 8 lead SOIC package, low skew, and the single gate design of the SK10/100ELT21W makes it ideal for applications which require the translation of a clock and a data signal. • • • • • • • Unlike the TTL totem pole outputs, the outputs of the ELT21W can be interfaced directly to CMOS inputs with better VOH (VCC – 0.5V) levels. With extended supply voltage capability, the device is functionally compatible with MC10/100ELT21 (5V) and MC10/100LVELT21 (3.3V). • • • • Functional Block Diagram NC D0 PIN Names 1 8 TTL 2 Extended Supply Voltage Range (VCC = +3.0V to 5.5V) 2.4 ns Typical Propagation Delay Differential PECL Inputs True Complementary CMOS/TTL Output Flow Through Pinouts Functionally compatible with MC10/100ELT21 and MC10/100LVELT21 75KW Internal Input Pulldown Resistors Specified Over Industrial Temperature Range: –40 oC to 85oC ESD Protection of >4000V Small Outline 8 Lead SOIC (150 mils) Package Flammability Rate: UL-94 code V-0 Moisture Sensitivity: Level 1 7 VCC Q0 Pin Function QO CMOS/TTL Output D0, D0* Differential PECL Inputs VBB Referenced Voltage Output VCC +VCC Supply GND Ground NC No Connect PECL D0* VBB 3 6 NC 4 5 GND Revision 1/October 16, 2001 1 www.semtech.com SK10/100ELT21W HIGH-PERFORMANCE PRODUCTS Package Information 8 Lead SOIC Package TOP VIEW END VIEW D A C 8 5 H E 0.25 M B M 1 4 h x 45o B q e A Seating Plane C L 0.10 A1 B 0.25 M C B S A S MILLIMETERS DIM MIN MAX A 1.35 1.75 A1 0.10 0.25 B 0.33 0.51 C 0.19 0.25 D 4.80 5.00 E 3.80 4.00 e 1.27 BSC H 5.80 6.20 h 0.25 0.50 L 0.40 1.27 q 0o 8o Revision 1/October 16, 2001 NOTES: 1. Dimensions are in millimeters. 2. Dimensions D and E do no include mold protrusion. 3. Maximum mold protrusion 0.15 per side. 4. Dimension B does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.127 total in excess of the B dimension at maximum material condition. 2 www.semtech.com SK10/100ELT21W HIGH-PERFORMANCE PRODUCTS DC Characteristics SK10/100ELT21W TTL Output DC Electrical Characteristics (VCC = 3.0V to 5.5V; TA = -40 oC to +85 oC) Symbol Characteristic VOH O u t p u t H I G H Vo l t a g e VOL O u t p u t L OW Vo l t a g e ICC Po w e r S u p p l y C u r r e n t Min Ty p Max Unit Cond V IOH = -3 mA 0.5 V IOL = 8 mA 32 mA VCC - 0.5 16 SK10ELT21W PECL Input DC Electrical Characteristics (VCC = 3.0V to 5.5V) TA = -40oC S y mb o l Ch a r a c t e r i s t i c VI H TA = 0oC TA = +25oC TA = +85oC Mi n Ma x Mi n Ma x Mi n Ma x Mi n Ma x Un i t Co n d Input HIGH Voltage 3770 2070 4110 2410 3830 2130 4160 2460 3870 2170 4190 2490 3940 2240 4280 2580 mV mV VCC = 5. 0V VCC = 3. 3V VI L Input LOW Voltage 3050 1350 3500 1800 3050 1350 3520 1820 3050 1350 3520 1820 3050 1350 3555 1855 mV mV VCC = 5. 0V VCC = 3. 3V VPP Minimum Peak-to-Peak Input 200 1000 200 1000 200 1000 200 1000 mV No t e 1 IIN I n p u t Cu r r e n t ( Di f f ) - 150 150 - 150 150 - 150 150 - 150 150 µA V BB Reference Output Voltage 3570 1870 3700 2000 3620 1920 3730 2030 3650 1950 3750 2050 3690 1990 3810 2110 mV mV VCC = 5. 0V VCC = 3. 3V SK100ELT21W PECL Input DC Electrical Characteristics (VCC = 3.0V to 5.5V) TA = - 40oC S y mb o l Ch a r a c t e r i s t i c s TA = 0oC TA = + 25oC TA = + 85oC Mi n Ma x Mi n Ma x Mi n Ma x Mi n Ma x Un i t Co n d VI H Input HIGH Voltage 3835 2135 4120 2420 3835 2135 4120 2420 3835 2135 4120 2420 3835 2135 4120 2420 mV mV VCC = 5. 0V VCC = 3. 3V VI L Input LOW Voltage 3190 1490 3525 1825 3190 1490 3525 1825 3190 1490 3525 1825 3190 1490 3525 1825 mV mV VCC = 5. 0V VCC = 3. 3V VPP Minimum Peak-to-Peak Input 200 1000 200 1000 200 1000 200 1000 mV No t e 1 IIN I n p u t HI GH Cu r r e n t - 150 150 - 150 150 - 150 150 - 150 150 mA V BB Reference Output Voltage 3620 1920 3740 2040 3620 1920 3740 2040 3620 1920 3740 2040 3620 1920 3740 2040 mV mV Revision 1/October 16, 2001 3 VCC = 5. 0V VCC = 3. 3V www.semtech.com SK10/100ELT21W HIGH-PERFORMANCE PRODUCTS AC Characteristics SK10/100ELT21W AC Electrical Characteristics (VCC = 3.0V to 5.5V) TA = - 40oC Symbol Characteristic Min Fmax Max Input Frequency 3 180 tPLH tPHL Propagation Delay 3 1.95 tr, tf Output Rise/Fall Time 1.0V to 2.0V 0.38 VCMR Common Mode Range 2 GND + 1.2 Typ TA = 0oC Max Min Typ TA = +25oC Max 180 0.75 5.4 1.95 1.5 0.38 VCC - 0.7 GND + 1.2 Min Typ TA = +85oC Max 180 0.75 5.4 1.95 1.5 0.38 VCC - 0.7 GND + 1.2 Min Typ Max 180 0.75 5.4 1.95 1.5 0.38 VCC - 0.7 GND + 1.2 Unit MHz 0.75 5.4 ns 1.5 ns VCC - 0.7 V Notes: 1. 200 mV input guarantees full logic swing at the output. 2. 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 GND and is equal to GND + 1.2V. 3. CL = 20 pF. 4. For part ordering description, see HPP Part Ordering Information Data Sheet. Revision 1/October 16, 2001 4 www.semtech.com SK10/100ELT21W HIGH-PERFORMANCE PRODUCTS Ordering Information Ordering Code Package ID Temperature Range SK10ELT21WD 8-SOIC Industrial SK10ELT21WDT 8-SOIC Industrial SK100ELT21WD 8-SOIC Industrial SK100ELT21WDT 8-SOIC Industrial SK10ELT21WU Die SK100ELT21WU Die Marking Information 8 PIN SOIC PACKAGE Function / Voltage & Device Operation Function Code / Part Number H = 10 K = 100 E L Y Y Assembly Lot Number W W YY: Last two digits of the Year WW: Working Week Contact Information Division Headquarters 10021 Willow Creek Road San Diego, CA 92131 Phone: (858) 695-1808 FAX: (858) 695-2633 Revision 1/October 16, 2001 Semtech Corporation High-Performance Products Division 5 Marketing Group 1111 Comstock Street Santa Clara, CA 95054 Phone: (408) 566-8776 FAX: (408) 727-8994 www.semtech.com