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100ELT22 5V Dual TTL to Differential PECL Translator
January 2003 Revised January 2003
100ELT22 5V Dual TTL to Differential PECL Translator
General Description
The 100ELT22 is a TTL to differential PECL translator operating from a single +5V supply. Both outputs of a differential pair should be terminated in 50 to VCC - 2.0V even if only one output is being used. If an output pair is unused both outputs can be left open (un-terminated). The 100 series is temperature compensated.
Features
s Typical propagation delay of 300 ps s <100 ps between outputs s Max ICC of 30 mA s Fairchild MSOP-8 package is a drop-in replacement to ON TSSOP-8 s Flow through pinout s Meets or exceeds JEDEC specification EIA/JESD78 IC latch-up test s Moisture Sensitivity Level 1 s ESD Performance: Human Body Model > 2000V Machine Model > 200V
Ordering Code:
Product Order Number 100ELT22M 100ELT22M8 (Preliminary) Package M08A MA08D Code KLT22 KT22 Package Description 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow 8-Lead Molded Small Outline Package (MSOP), JEDEC MO-187, 3.0mm Wide Number Top Mark
Devices also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Connection Diagram
Logic Diagram
Top View
Pin Descriptions
Pin Name Qn, Qn D0 , D1 VCC GND Description PECL Differential Outputs TTL Inputs Positive Supply Ground
(c) 2003 Fairchild Semiconductor Corporation
DS500773
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100ELT22
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) Input Voltage (VI) VI VCC DC Output Current (IOUT) Continuous Surge Storage Temperature (TSTG) 50 mA 100 mA 0.0V to +7.0V 0.0V to + 7.0V
Recommended Operating Conditions
Power Supply Operating TTL Input Voltage Free Air Operating Temperature (TA) VCC = 4.2V to 5.5V 0.0V to VCC
-40C to +85C
-65C to + 150C
Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum rating. The "Recommended Operating Conditions" table will define the conditions for actual device operation.
PECL DC Electrical Characteristics VCC = 5.0V; GND = 0.0V (Note 2)
Symbol ICC VOH VOL Parameter Power Supply Current Output HIGH Voltage (Note 3) Output LOW Voltage (Note 3) 3915 3170 3995 3305 -40C Min Typ Max 30 4120 3445 3975 3190 4045 3295 Min 25C Typ Max 30 4120 3380 3975 3190 4050 3295 Min 85C Typ Max 30 4120 3380 Units mA mV mV
Note 2: Output parameters vary 1 to 1 with VCC. VCC can vary +0.5V/-0.8V. Note 3: Outputs are terminated through a 50 Resistor to VCC - 2.0V. Note: Devices are designed to meet the DC specifications after thermal equilibrium has been established. Circuit is tested with air flow greater than 500LFPM maintained.
TTL DC Electrical Characteristics VCC = 5.0V; GND = 0.0V (Note 4); TA = -40C to +85C
Symbol IIH IIL VIK VIH VIL Input HIGH Current Input LOW Current Clamp Diode Voltage Input HIGH Voltage Input LOW Voltage 2.0 0.8 Parameter Min Typ Max 20 100 -200 -1.2 Units A A V V V Condition VIN = 2.7V VIN = VCC VIN = 0.5V IIN = -18 mA
Note 4: VCC can vary +0.5V/-0.8V.
AC Electrical Characteristics VCC = 5.0V; GND = 0.0V (Note 5)
Symbol fMAX tJITTER tPLH, tPHL tr, tf tskpp tskew Parameter Maximum Input Frequency Cycle-to-Cycle Jitter Propagation Delay to Output (Note 6) Output Rise Time/Fall Times (20% to 80%) Part to Part Skew Within Device Skew (Note 7) 100 200 -40C Min Typ TBD TBD 600 500 500 100 100 200 Max Min 25C Typ TBD TBD 600 500 500 100 100 200 Max Min 85C Typ TBD TBD 600 500 500 100 Max Units MHz ps ps ns ps ps Figure 1 Figure 2 Figure Number
Note 5: VCC can vary +0.5V/-0.8V. Note 6: Specifications for standard TTL input signal (see Figure 1). Note 7: Within-device skew is defined as identical transitions on similar paths through a device.
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100ELT22
Switching Waveforms
Note: VM varies 1:1 with VEE
FIGURE 1. TTL to Differential PECL Propagation Delay
FIGURE 2. Differential Output Edge Rates
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100ELT22
Physical Dimensions inches (millimeters) unless otherwise noted
8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M08A
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100ELT22 5V Dual TTL to Differential PECL Translator
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
8-Lead Molded Small Outline Package (MSOP), JEDEC MO-187, 3.0mm Wide Package Number MA08D
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 5 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com
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