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SK10/100ELT21W
Differential PECL to CMOS/TTL or LVPECL to LVCMOS/LVTTL Translator
HIGH-PERFORMANCE PRODUCTS Description
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).
Features
* * * * * * * * * * * * 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
Functional Block Diagram
PIN Names
Pin QO Function CMOS/TTL Output Differential PECL Inputs Referenced Voltage Output +VCC Supply Ground No Connect
NC
1
8
VCC
D0, D0* VBB VCC
D0
2
TTL
7
Q0
GND NC
PECL
D0*
3
6
NC
VBB
4
5
GND
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SK10/100ELT21W
HIGH-PERFORMANCE PRODUCTS Package Information
8 Lead SOIC Package
TOP VIEW
A D
END VIEW
C
8
5
E 1 4
H
0.25 M
BM
B
e
h x 45o q
A C Seating Plane
0.10
L
A1 B
0.25 M CB
S
A
S
MILLIMETERS DIM A A1 B C D E e H h L q MIN 1.35 0.10 0.33 0.19 4.80 3.80 MAX 1.75 0.25 0.51 0.25 5.00 4.00
1.27 BSC 5.80 0.25 0.40 0o 6.20 0.50 1.27 8o
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.
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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 VOH VOL ICC Characteristic O u t p u t H I G H Vo l t a g e O u t p u t L OW Vo l t a g e Po w e r S u p p l y C u r r e n t 16 Min VCC - 0.5 0.5 32 Ty p Max Unit V V mA Cond IOH = -3 mA IOL = 8 mA
SK10ELT21W PECL Input DC Electrical Characteristics (VCC = 3.0V to 5.5V)
TA = -40oC S y mb o l VI H VI L VPP IIN V BB Ch a r a c t e r i s t i c Input HIGH Voltage Input LOW Voltage Minimum Peak-to-Peak Input I n p u t Cu r r e n t ( Di f f ) Reference Output Voltage Mi n 3770 2070 3050 1350 200 - 150 3570 1870 Ma x 4110 2410 3500 1800 1000 150 3700 2000 TA = 0oC Mi n 3830 2130 3050 1350 200 - 150 3620 1920 Ma x 4160 2460 3520 1820 1000 150 3730 2030 TA = +25oC Mi n 3870 2170 3050 1350 200 - 150 3650 1950 Ma x 4190 2490 3520 1820 1000 150 3750 2050 TA = +85oC Mi n 3940 2240 3050 1350 200 - 150 3690 1990 Ma x 4280 2580 3555 1855 1000 150 3810 2110 Un i t mV mV mV mV mV A mV mV VCC = 5. 0V VCC = 3. 3V Co n d VCC = 5. 0V VCC = 3. 3V VCC = 5. 0V VCC = 3. 3V No t e 1
SK100ELT21W PECL Input DC Electrical Characteristics (VCC = 3.0V to 5.5V)
TA = - 40oC TA = 0oC TA = + 25oC TA = + 85oC
S y mb o l VI H VI L VPP IIN V BB
Ch a r a c t e r i s t i c s Input HIGH Voltage
Mi n 3835 2135 3190 1490 200 - 150 3620 1920
Ma x 4120 2420 3525 1825 1000 150 3740 2040
Mi n 3835 2135 3190 1490 200 - 150 3620 1920
Ma x 4120 2420 3525 1825 1000 150 3740 2040
Mi n 3835 2135 3190 1490 200 - 150 3620 1920
Ma x 4120 2420 3525 1825 1000 150 3740 2040
Mi n 3835 2135 3190 1490 200 - 150 3620 1920
Ma x 4120 2420 3525 1825 1000 150 3740 2040
Un i t mV mV mV mV
mV
Co n d VCC = 5. 0V VCC = 3. 3V VCC = 5. 0V VCC = 3. 3V
No t e 1
Input LOW Voltage Minimum Peak-to-Peak Input I n p u t HI GH Cu r r e n t Reference Output Voltage
mA mV mV VCC = 5. 0V VCC = 3. 3V
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SK10/100ELT21W
HIGH-PERFORMANCE PRODUCTS AC Characteristics
SK10/100ELT21W AC Electrical Characteristics
(VCC = 3.0V to 5.5V)
TA = - 40oC Symbol Fmax tPLH tPHL tr, tf VCMR Characteristic Max Input Frequency 3 Propagation Delay 3 Output Rise/Fall Time 1.0V to 2.0V Common Mode Range 2 Min 180 1.95 0.38 GND + 1.2 0.75 5.4 1.5 VCC - 0.7 Typ Max Min 180 1.95 0.38 GND + 1.2 0.75 5.4 1.5 VCC - 0.7 TA = 0oC Typ Max Min 180 1.95 0.38 GND + 1.2 0.75 5.4 1.5 VCC - 0.7 TA = +25oC Typ Max Min 180 1.95 0.38 GND + 1.2 0.75 5.4 1.5 VCC - 0.7 TA = +85oC Typ Max Unit MHz ns ns 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.
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SK10/100ELT21W
HIGH-PERFORMANCE PRODUCTS Ordering Information
Ordering Code SK10ELT21WD SK10ELT21WDT SK100ELT21WD SK100ELT21WDT SK10ELT21WU SK100ELT21WU Package ID 8-SOIC 8-SOIC 8-SOIC 8-SOIC Die Die Temperature Range Industrial Industrial Industrial Industrial
Marking Information
8 PIN SOIC PACKAGE Function / Voltage & Device Operation Function Code / Part Number
H = 10 K = 100
E
L
Assembly Lot Number Y Y 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
Semtech Corporation High-Performance Products Division
Marketing Group 1111 Comstock Street Santa Clara, CA 95054 Phone: (408) 566-8776 FAX: (408) 727-8994
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