Is Now Part of To learn more about ON Semiconductor, please visit our website at www.onsemi.com Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers will need to change in order to meet ON Semiconductor's system requirements. Since the ON Semiconductor product management systems do not have the ability to manage part nomenclature that utilizes an underscore (_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please email any questions regarding the system integration to Fairchild_questions@onsemi.com. ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor's product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. "Typical" parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. Revised June 2005 FSTD16861 20-Bit Bus Switch with Level Shifting General Description Features The Fairchild Switch FSTD16861 provides 20-bits of highspeed CMOS TTL-compatible bus switching. The low On Resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. A diode to VCC has been integrated into the circuit to allow for level shifting between 5V inputs and 3.3V outputs. 4: switch connection between two ports. The device is organized as a 10-bit or 20-bit bus switch. When OE1 is LOW, the switch is ON and Port 1A is connected to Port 1B. When OE2 is LOW, Port 2A is connected to Port 2B. When OEX is HIGH, a high impedance state exists between the A and B Ports. Minimal propagation delay through the switch. Low lCC. Zero bounce in flow-through mode. Control inputs compatible with TTL level. TruTranslation voltage translation from 5.0V inputs to 3.3V outputs Power-off high impedance inputs and outputs Supports live insertion/withdrawal (Note 1) Note 1: To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver. Ordering Code: Order Number FSTD16861MTD Package Number Package Description MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. TruTranslation is trademark of Fairchild Semiconductor Corporation. (c) 2005 Fairchild Semiconductor Corporation DS500421 www.fairchildsemi.com FSTD16861 20-Bit Bus Switch with Level Shifting May 2001 FSTD16861 Connection Diagram Logic Diagram Pin Descriptions Truth Table Pin Name Description OE1, OE2 Bus Switch Enables OE1 Inputs OE2 Inputs/Outputs 1An, 2An Bus A L L 1A 1B 1Bn, 2Bn Bus B L H 1A 1B H L Z H H Z H HIGH Voltage Level L LOW Voltage Level Z High Impedance www.fairchildsemi.com 2 1A, 1B 2A, 2B 2A 2B Z 2B 2A Z Supply Voltage (VCC) DC Switch Voltage (VS) (Note 3) DC Input Voltage (VIN) (Note 4) DC Input Diode Current (lIK) VIN 0V Recommended Operating Conditions (Note 5) 0.5V to 7.0V 0.5V to 7.0V 0.5V to 7.0V 50 mA DC Output Current (IOUT) 128 mA DC VCC/GND Current (ICC/IGND) Storage Temperature Range (TSTG) 4.5V to 5.5V Power Supply Operating (VCC) Input Voltage (VIN) 0V to 5.5V Output Voltage (VOUT) 0V to 5.5V Input Rise and Fall Time (tr, tf) r100 mA 65qC to 150 qC Switch Control Input 0 ns/V to 5 ns/V Switch I/O 0 ns/V to DC -40 qC to 85 qC Free Air Operating Temperature (TA) Note 2: 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. Note 3: VS is the voltage observed/applied at either the A or B Ports across the switch. Note 4: The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. Note 5: Unused control inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics VCC Symbol Parameter (V) VIK Clamp Diode Voltage VIH HIGH Level Input Voltage 4.5-5.5 VIL LOW Level Input Voltage 4.5-5.5 VOH HIGH Level 4.5-5.5 II Input Leakage Current 40 qC to 85 qC TA Min Typ (Note 6) Max 1.2 4.5 2.0 Units V Conditions IIN 18 mA V 0.8 V 5.5 r1.0 PA 0 d VIN d 5.5V 0 10 PA VIN 5.5 r1.0 PA 0 d A, B d VCC See Figure 3 V 5.5V IOZ OFF-STATE Leakage Current RON Switch On Resistance 4.5 4 7 : VIN 0V, IIN 64 mA (Note 7) 4.5 4 7 : VIN 0V, IIN 30 mA 4.5 35 50 : VIN 2.4V, IIN ICC Quiescent Supply Current 1.5 mA 5.5 ' ICC Increase in ICC per Input 5.5 10 PA 2.5 mA OE1 VIN OE1 VIN OE2 15 mA GND VCC or GND, IOUT OE2 0 VCC VCC or GND, IOUT 0 One Input at 3.4V Other Inputs at VCC or GND Note 6: Typical values are at VCC 5.0V and TA 25qC Note 7: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the voltages on the two (A or B) pins. 3 www.fairchildsemi.com FSTD16861 Absolute Maximum Ratings(Note 2) FSTD16861 AC Electrical Characteristics TA Symbol Parameter CL 40 qC to 85 qC, 50pF, RU VCC Min tPHL, tPLH Propagation Delay Bus-to-Bus (Note 8) tPZH, tPZL Output Enable Time tPHZ, tPLZ RD Units Figure Conditions Number Max 0.25 ns 6.0 ns 1.0 Output Disable Time 500: 4.5 - 5.5V 1.0 7.0 ns VI OPEN Figures 1, 2 Figures 1, 2 VI 7V for tPZL VI OPEN for tPZH VI 7V for tPLZ VI OPEN for tPHZ Figures 1, 2 Note 8: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On Resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage source (zero output impedance). Capacitance (Note 9) Symbol CIN CI/O Note 9: TA Parameter Typ Max Units Conditions Control Pin Input Capacitance 3 pF VCC Input/Output Capacitance "OFF State" 6 pF VCC, OE 25qC, f 1 Mhz, Capacitance is characterized but not tested. AC Loading and Waveforms Note: Input driven by 50: source terminated in 50: Note: CL includes load and stray capacitance Note: Input PRR 1.0 MHz, tW 500 ns FIGURE 1. AC Test Circuit FIGURE 2. AC Waveforms www.fairchildsemi.com 4 5.0V, VIN 0V 5.0V, VIN 0V FSTD16861 Output Voltage HIGH vs. Supply Voltage FIGURE 3. 5 www.fairchildsemi.com FSTD16861 20-Bit Bus Switch with Level Shifting Physical Dimensions inches (millimeters) unless otherwise noted 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD48 Technology Description The Fairchild Switch family derives from and embodies Fairchild's proven switch technology used for several years in its 74LVX3L384(FST3384) bus switch product. 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 www.fairchildsemi.com 6 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor's product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. "Typical" parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. 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