Revised January 2003 100ELT22 5V Dual TTL to Differential PECL Translator General Description Features The 100ELT22 is a TTL to differential PECL translator operating from a single +5V supply. ■ Typical propagation delay of 300 ps Both outputs of a differential pair should be terminated in 50Ω 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). ■ Max ICC of 30 mA The 100 series is temperature compensated. ■ <100 ps between outputs ■ Fairchild MSOP-8 package is a drop-in replacement to ON TSSOP-8 ■ Flow through pinout ■ Meets or exceeds JEDEC specification EIA/JESD78 IC latch-up test ■ Moisture Sensitivity Level 1 ■ ESD Performance: Human Body Model > 2000V Machine Model > 200V Ordering Code: Product Order Number Package Code Package Description Number Top Mark 100ELT22M M08A KLT22 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow 100ELT22M8 (Preliminary) MA08D KT22 8-Lead Molded Small Outline Package (MSOP), JEDEC MO-187, 3.0mm Wide 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 Description Qn, Qn PECL Differential Outputs D0 , D1 TTL Inputs VCC Positive Supply GND Ground © 2003 Fairchild Semiconductor Corporation DS500773 www.fairchildsemi.com 100ELT22 5V Dual TTL to Differential PECL Translator January 2003 100ELT22 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) 0.0V to +7.0V Input Voltage (VI) VI ≤ VCC 0.0V to + 7.0V Recommended Operating Conditions VCC = 4.2V to 5.5V Power Supply Operating DC Output Current (IOUT) TTL Input Voltage Continuous 50 mA Surge 0.0V to VCC −40°C to +85°C Free Air Operating Temperature (TA) 100 mA −65°C to + 150°C Storage Temperature (TSTG) 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 −40°C Parameter 25°C Min Typ Max 85°C Min Typ Max 30 Min Typ Max 30 Units ICC Power Supply Current 30 mA VOH Output HIGH Voltage (Note 3) 3915 3995 4120 3975 4045 4120 3975 4050 4120 mV VOL Output LOW Voltage (Note 3) 3170 3305 3445 3190 3295 3380 3190 3295 3380 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 50Ω 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 = −40°C to +85°C Symbol Parameter Min Typ Max IIH Input HIGH Current 20 IIL Input LOW Current −200 VIK Clamp Diode Voltage VIH Input HIGH Voltage VIL Input LOW Voltage 100 −1.2 2.0 Units µA µA V Condition VIN = 2.7V VIN = VCC VIN = 0.5V IIN = −18 mA V 0.8 V Note 4: VCC can vary +0.5V/−0.8V. AC Electrical Characteristics VCC = 5.0V; GND = 0.0V (Note 5) Symbol Parameter −40°C Min Typ 25°C Max Min Typ 85°C Max Min Typ fMAX Maximum Input Frequency TBD TBD TBD tJITTER Cycle-to-Cycle Jitter TBD TBD TBD tPLH, tPHL Propagation Delay to Output (Note 6) tr, tf Output Rise Time/Fall Times (20% to 80%) Max Units MHz ps 100 600 100 600 100 600 ps Figure 1 200 500 200 500 200 500 ns Figure 2 tskpp Part to Part Skew 500 500 500 ps tskew Within Device Skew (Note 7) 100 100 100 ps 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. www.fairchildsemi.com Figure Number 2 100ELT22 Switching Waveforms Note: VM varies 1:1 with VEE FIGURE 1. TTL to Differential PECL Propagation Delay FIGURE 2. Differential Output Edge Rates 3 www.fairchildsemi.com 100ELT22 Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M08A www.fairchildsemi.com 4 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: 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. 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. www.fairchildsemi.com 5 www.fairchildsemi.com