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 November 1992 V Revised April 2005 H C 2 4 4 74VHC244 O c Octal Buffer/Line Driver with 3-STATE Outputs t a l B General Description Features u f TbaSuchchfhefieo eVrtv tHkefyasC bT2hrT4iigc4Lha twiseshp daie lneew dmait dhoav pinasetniraliaccinetoioidnnn gh g sitgihamhete i lsC apCrMe tMeOod OSe SqC lou MwitveO acpSlheo nnwootce lBtora igdpl yiobs. lusaIisr-t (cid:1)(cid:1)(cid:1) HHPoiiggwhhe Snr opdieoseewd ni:m tpPmrDou t ne ic3tyt.i:9o Vnns Ni sI(H tpy rpo )Vv aNidtI LeV d C oC2n 8 %a 5l lV VinCpCu (tsmin) fer/Lin e pation. The VHC244 is a non-inverting 3-STATE buffer hav- (cid:1) Low noise: VOLP 0.6V (typ) D idcnleogsc ikgtw ndoer idva etcorts ibv, eea- nuLdsO ebWdu s a osou r3itep-nSuttTe AdeT ntEraa bmnlesesmm. itoTterhyre/ rasedecd erdievesevsris cd.ersiv earrse, (cid:1)(cid:1) LPoinw a pnodw feunr cdtiisosnip caotimonp:a ItCibCle w 4i tPhA 7 4(mHaCx2)4 @4 TA 25qC rive r An input protection circuit ensures that 0V to 7V can be w applied to the input pins without regard to the supply volt- age. This device can be used to interface 5V to 3V systems ith and two supply systems such as battery back up. This cir- 3 cuit prevents device destruction due to mismatched supply - S and input voltages. T A T E Ordering Code: O u Order Number Package Number Package Description t p 74VHC244M M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide u 74VHC244SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide ts 74VHC244MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74VHC244N 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 © 2005 Fairchild Semiconductor Corporation DS011522 www.fairchildsemi.com

4 4 Pin Descriptions 2 C H Pin Names Description V 74 OE1, OE2 3-STATE Output Enable Inputs I0–I7 Inputs O0–O7 3-STATE Outputs Truth Tables Inputs Outputs OE1 In (Pins 12, 14, 16, 18) L L L L H H H X Z Inputs Outputs OE2 In (Pins 3, 5, 7, 9) L L L L H H H X Z H HIGH Voltage Level L LOW Voltage Level I Immaterial Z High Impedance www.fairchildsemi.com 2

7 Absolute Maximum Ratings Recommended Operating 4 (Note 1) V Conditions (Note 2) H Supply Voltage (VCC) (cid:16)0.5V to (cid:14)7.0V C DC Input Voltage (VIN) (cid:16)0.5V to (cid:14)7.0V Supply Voltage (VCC) 2.0V to 5.5V 24 DC Output Voltage (VOUT) (cid:16)0.5V to VCC (cid:14) 0.5V Input Voltage (VIN) 0V to (cid:14)5.5V 4 Input Diode Current (IIK) (cid:16)20 mA Output Voltage (VOUT) 0V to VCC Output Diode Current (IOK) r20 mA Operating Temperature (TOPR) (cid:16)40qC to (cid:14)85qC DC Output Current (IOUT) r25 mA Input Rise and Fall Time (tr, tf) DC VCC/GND Current (ICC) r75 mA VCC 3.3V r 0.3V 0 ns/V a 100 ns/V Storage Temperature (TSTG) (cid:16)65qC to (cid:14)150qC VCC 5.0V r 0.5V 0 ns/V a 20 ns/V Lead Temperature (TL) Note 1: Absolute Maximum Ratings are values beyond which the device may be damaged or have its useful life impaired. The databook specifica- (Soldering, 10 seconds) 260qC tions should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading vari- ables. Fairchild does not recommend operation outside databook specifica- tions. Note 2: Unused inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics VCC TA 25qC TA (cid:16)40qC to (cid:14)85qC Symbol Parameter Units Conditions (V) Min Typ Max Min Max VIH HIGH Level 2.0 1.5 1.5 V Input Voltage 3.0 (cid:16) 5.5 0.7 VCC 0.7 VCC VIL LOW Level 2.0 0.5 0.5 V Input Voltage 3.0 (cid:16) 5.5 0.3 VCC 0.3 VCC VOH HIGH Level 2.0 1.9 2.0 1.9 VIN VIH IOH (cid:16)50 PA Output Voltage 3.0 2.9 3.0 2.9 V or VIL 4.5 4.4 4.5 4.4 3.0 2.58 2.48 V IOH (cid:16)4 mA 4.5 3.94 3.80 IOH (cid:16)8 mA VOL LOW Level 2.0 0.0 0.1 0.1 VIN VIH IOL 50 PA Output Voltage 3.0 0.0 0.1 0.1 V or VIL 4.5 0.0 0.1 0.1 3.0 0.36 0.44 V IOL 4 mA 4.5 0.36 0.44 IOL 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 Noise Characteristics VCC TA 25qC Symbol Parameter Units Conditions (V) Typ Limits VOLP Quiet Output Maximum 5.0 0.6 0.9 V CL 50 pF (Note 3) Dynamic VOL VOLV Quiet Output Minimum 5.0 (cid:16)0.6 (cid:16)0.9 V CL 50 pF (Note 3) Dynamic VOL VIHD Minimum HIGH Level 5.0 3.5 V CL 50 pF (Note 3) Dynamic Input Voltage VILD Maximum HIGH Level 5.0 1.5 V CL 50 pF (Note 3) Dynamic Input Voltage Note 3: Parameter guaranteed by design. 3 www.fairchildsemi.com

4 4 AC Electrical Characteristics 2 C H VCC TA 25qC TA (cid:16)40qC to (cid:14)85qC V Symbol Parameter (V) Min Typ Max Min Max Units Conditions 4 7 tPLH Propagation Delay 3.3 r 0.3 5.8 8.4 1.0 10.0 ns CL 15 pF tPHL Time 8.3 11.9 1.0 13.5 CL 50 pF 5.0 r 0.5 3.9 5.5 1.0 6.5 ns CL 15 pF 5.4 7.5 1.0 8.5 CL 50 pF tPZL 3-STATE Output 3.3 r 0.3 6.6 10.6 1.0 12.5 ns CL 15 pF tPZH Enable Time 5.0 r 0.5 94..17 174..31 11..00 186..50 ns RL 1 k: CCLL 5105 ppFF 6.2 9.3 1.0 10.5 CL 50 pF ttPPLHZZ 3D-iSsaTbAlTeE T iOmuetput 35..03 rr 00..53 160..73 194..20 11..00 1106..50 ns RL 1 k: CCLL 5500 ppFF tOSLH Output to Output 3.3 r 0.3 1.5 1.5 ns (Note 4) CL 50 pF tOSHL Skew 5.0 r 0.5 1.0 1.0 CL 50 pF CIN Input Capacitance 4 10 10 pF VCC Open COUT Output Capacitance 6 pF VCC 5.0V CPD Power Dissipation Capacitance 19 pF (Note 5) Note 4: Parameter guaranteed by design. tOSLH |tPLHmax (cid:16) tPLHmin|; tOSHL |tPHLmax (cid:16) tPHLmin|. Note 5: 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). www.fairchildsemi.com 4

7 Physical Dimensions 4 inches (millimeters) unless otherwise noted V H C 2 4 4 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B 5 www.fairchildsemi.com

4 4 Physical Dimensions 2 inches (millimeters) unless otherwise noted (Continued) C H V 4 7 Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D www.fairchildsemi.com 6

7 Physical Dimensions 4 inches (millimeters) unless otherwise noted (Continued) V H C 2 4 4 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 7 www.fairchildsemi.com

s ut Physical Dimensions inches (millimeters) unless otherwise noted (Continued) p t u O E T A T S - 3 h t i w r e v i r D e n i L / r e f f u B al t c 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide O Package Number N20A 4 4 2 C H V 4 7 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. www.fairchildsemi.com 8

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

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: O N Semiconductor: 74VHC244M 74VHC244SJX 74VHC244MX 74VHC244SJ 74VHC244MTCX 74VHC244MTC 74VHC244N