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.

7 4 June 1997 V Revised April 2005 H C T 5 4 74VHCT541A 1 A Octal Buffer/Line Driver with 3-STATE Outputs O c t a General Description Protection circuits ensure that 0V to 7V can be applied to l the input and output (Note 1) pins without regard to the B The VHCT541A is an advanced high-speed CMOS device supply voltage. This device can be used to interface 3V to u fabricated with silicon gate CMOS technology. It achieves 5V systems and two supply systems such as battery ff the high-speed operation similar to equivalent Bipolar backup. This circuit prevents device destruction due to mis- er Schottky TTL while maintaining the CMOS low power dissi- matched supply and input voltages. /L pation. Note 1: Outputs in OFF-state. in The VHCT541A is an octal buffer/line driver designed to be e employed as memory and address drivers, clock drivers Features D and bus oriented transmitter/receivers. r This device is similar in function to the VHCT244A while (cid:1) High Speed: tPD 5.5 ns (typ) at VCC 5V ive pfrroomvi doiuntgp uflotsw).- tThhroisu gphin aoructh aitrercatnugree m(inepnut tms aokne osp tphoiss itdee sviidcee (cid:1)(cid:1) LPooww epro dwoewr nd ipsrsoipteactitoionn: IiCs Cp r o v4i dPeAd ( omna ax)ll aint pTuAt s a 2n5dq C r w especially useful as an output port for microprocessors, outputs it allowing ease of layout and greater PC board density. h (cid:1) Pin and function compatible with 74HCT541 3 -S T Ordering Code: A T E Order Number Package Number Package Description O 74VHCT541AM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide u t 74VHCT541ASJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide p u 74VHCT541AMTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide t s 74VHCT541AN N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Pb-Free package per JEDEC J-STD-020B. Logic Symbol Connection Diagram IEEE/IEC Truth Table Inputs Outputs Pin Descriptions OE1 OE2 I Pin Names Description L L H H OE1, OE2 3-STATE Output Enable Inputs H X X Z I0 - I7 Inputs X H X Z O0 - O7 3-STATE Outputs L L L L H HIGH Voltage Level L LOW Voltage Level X Immaterial Z High Impedance © 2005 Fairchild Semiconductor Corporation DS500013 www.fairchildsemi.com

A 1 Absolute Maximum Ratings(Note 2) Recommended Operating 4 5 Conditions (Note 6) T Supply Voltage (VCC) (cid:16)0.5V to (cid:14)7.0V C H DC Input Voltage (VIN) (cid:16)0.5V to (cid:14)7.0V Supply Voltage (VCC) 4.5V to (cid:14)5.5V V DC Output Voltage (VOUT) Input Voltage (VIN) 0V to (cid:14)5.5V 74 (Note 3) (cid:16)0.5V to 7.0V Output Voltage (VOUT) (Note 4) (cid:16)0.5V to V CC + 0.5V (Note 4) 0V to VCC Input Diode Current (IIK) (cid:16)20 mA (Note 3) 0V to 5.5V Output Diode Current (IOK) Operating Temperature (TOPR) (cid:16)40qC to (cid:14)85qC (Note 5) r20 mA Input Rise and Fall Time (tr, tf) DC Output Current (IOUT) r25 mA VCC 5.0V r0.5V 0 a 20 ns/V DC VCC/GND Current (ICC) r75 mA Note 2: Absolute Maximum Ratings are values beyond which the device may be damaged or have its useful life impaired. The databook specifica- Storage Temperature (TSTG) (cid:16)65qC to (cid:14)150qC tions should be met, without exception, to ensure that the system design is Lead Temperature (TL) reliable over its power supply, temperature, and output/input loading vari- ables. Fairchild does not recommend operation outside databook specifica- (Soldering, 10 seconds) 260qC tions. Note 3: When Outputs are in OFF-State OR when VCC 0V. Note 4: HIGH or LOW state IOUT absolute maximum rating must be observed. Note 5: VOUT (cid:31)GND,.VOUT ! VCC (Outputs Active). Note 6: Unused inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol Parameter VCC TA 25qC TA (cid:16)40qC to (cid:14)85qC Units Conditions (V) Min Typ Max Min Max VIH HIGH Level Input Voltage 4.5 (cid:16) 5.5 2.0 2.0 V VIL LOW Level Input Voltage 4.5 (cid:16) 5.5 0.8 0.8 V V OH HIGH Level Output Voltage 4.5 4.4 4.5 4.4 V VIN VIH IOH (cid:16)50 PA 4.5 3.94 3.80 V IOH (cid:16)8 mA V OL LOW Level Output Voltage 4.5 0.0 0.1 0.1 V VIN VIL IOL (cid:14)50 PA 4.5 0.36 0.44 V IOL (cid:14)8 mA IOZ 3-STATE Output 5.5 r0.25 r2.5 PA VIN VIH or VIL Off-State Current VOUT VCC or GND IIN Input Leakage Current 0 (cid:16) 5.5 r0.1 r1.0 PA VIN 5.5V or GND ICC Quiescent Supply Current 5.5 4.0 40.0 PA VIN VCC or GND ICCT Maximum ICC/Input 5.5 1.35 1.50 mA VIN 3.4V Other Inputs VCC or GND IOFF Output Leakage Current 0 0.5 5.0 PA VOUT 5.5V www.fairchildsemi.com 2

7 Noise Characteristics 4 V H Symbol Parameter VCC TA 25qC Units Conditions C (V) Typ Limits T 5 VOLP Quiet Output Maximum Dynamic VOL 5.0 1.2 1.6 V CL 50 pF 4 (Note 7) 1 A VOLV Quiet Output Minimum Dynamic VOL 5.0 (cid:16)1.2 (cid:16)1.6 V CL 50 pF (Note 7) VIHD Minimum HIGH Level Dynamic Input Voltage 5.0 2.0 V CL 50 pF (Note 7) VILD Maximum HIGH Level Dynamic Input Voltage 5.0 0.8 V CL 50 pF (Note 7) Note 7: Parameter guaranteed by design. AC Electrical Characteristics Symbol Parameter VCC TA 25qC TA (cid:16)40qC to (cid:14)85qC Units Conditions (V) Min Typ Max Min Max tPLH Propagation Delay 5.0 r 0.5 5.0 6.9 1.0 8.0 ns CL 15 pF tPHL Time 5.5 7.9 1.0 9.0 CL 50 pF tPZL 3-STATE Output 5.0 r 0.5 8.3 11.3 1.0 13.0 ns RL 1 k: CL 15 pF tPZH Enable Time 8.8 12.3 1.0 14.0 CL 50 pF tPLZ 3-STATE Output 5.0 r 0.5 9.4 11.9 1.0 13.5 ns RL 1 k: CL 50 pF tPHZ Disable Time tOSLH Output to Output Skew 5.0 r 0.5 1.0 1.0 ns (Note 8) CL 50 pF tOSHL CIN Input Capacitance 4 10 10 pF VCC Open COUT Output Capacitance 9 pF VCC 5.0V CPD Power Dissipation Capacitance 19 pF (Note 9) Note 8: Parameter guaranteed by design. tOSLH |tPLHmax (cid:16) tPLHmin|; tOSHL |tPHLmax (cid:16) tPHLmin|. Note 9: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC (OPR.) CPD * VCC * fIN (cid:14) ICC/8 (per bit). 3 www.fairchildsemi.com

A 1 Physical Dimensions inches (millimeters) unless otherwise noted 4 5 T C H V 4 7 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B www.fairchildsemi.com 4

7 Physical Dimensions 4 inches (millimeters) unless otherwise noted (Continued) V H C T 5 4 1 A Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 5 www.fairchildsemi.com

A 1 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 4 5 T C H V 4 7 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 www.fairchildsemi.com 6

7 Physical Dimensions 4 inches (millimeters) unless otherwise noted (Continued) V H C T 5 4 1 A O c t a l B u f f e r / L in e D r i v e r w it h 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide 3 Package Number N20A - S T A T E O u t p u t s 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 2. A critical component in any component of a life support which, (a) are intended for surgical implant into the device or system whose failure to perform can be rea- body, or (b) support or sustain life, and (c) whose failure sonably expected to cause the failure of the life support to perform when properly used in accordance with device or system, or to affect its safety or effectiveness. instructions for use provided in the labeling, can be rea- sonably expected to result in a significant injury to the www.fairchildsemi.com user. 7 www.fairchildsemi.com

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. 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. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: N. American Technical Support: 800−282−9855 Toll Free ON Semiconductor Website: www.onsemi.com Literature Distribution Center for ON Semiconductor USA/Canada 19521 E. 32nd Pkwy, Aurora, Colorado 80011 USA Europe, Middle East and Africa Technical Support: Order Literature: http://www.onsemi.com/orderlit Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Phone: 421 33 790 2910 Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Japan Customer Focus Center For additional information, please contact your local Email: orderlit@onsemi.com Phone: 81−3−5817−1050 Sales Representative © Semiconductor Components Industries, LLC www.onsemi.com www.onsemi.com 1