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 5 74VHC245 O c Octal Bidirectional Transceiver with 3-STATE Outputs t a l B General Description Features id i The VHC245 is an advanced high speed CMOS octal bus (cid:1) High Speed: tPD 4.0 ns (typ) at VCC 5V re tIlatr ara ncSshcciehevoivetetskr y hf aiTgbhTr iLsc pawetehedidl e wo mpithea risanittliaiocinon nisn iggm atilthaeer CtCoM MeOqOSuSi v tealoclewhnn tpo Boloiwpgoey-r. (cid:1)(cid:1) HPoigwhe Nr oDisoew nIm Pmroutneictyti:o Vn NisIH p ro VvNidILe d o2n8 %al l VinCpCu (tsMin) ction dissipation. The VHC245 is intended for bidirectional asyn- (cid:1) Low Noise: VOLP 0.9V (typ) a chronous communication between data busses. The direc- (cid:1) Low Power Dissipation: l T tion of data transmission is determined by the level of the r T/R input. The enable input can be used to disable the ICC 4 PA (Max) @ TA 25qC a n device so that the busses are effectively isolated. All inputs (cid:1) Pin and Function Compatible with 74HC245 s are equipped with protection circuits against static dis- c charge. e iv e r Ordering Code: w i t h Order Number Package Number Package Description 3 74VHC245M M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide - S 74VHC245SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide T A 74VHC245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide T 74VHC245N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide E Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. O Pb-Free package per JEDEC J-STD-020B. u t p Logic Symbol Connection Diagram u t s IEEE/IEC Pin Description Truth Table Pin Description Inputs Outputs Names OE T/R L L Bus B Data to Bus A OE Output Enable Input L H Bus A Data to Bus B T/R Transmit/Receive Input H X HIGH-Z State A0–A7 Side A Inputs or 3-STATE Outputs H HIGH Voltage Level L LOW Voltage Level X Immaterial Any unused bus terminals during HIGH-Z State must be held HIGH or B0–B7 Side B Inputs or 3-STATE Outputs LOW. © 2005 Fairchild Semiconductor Corporation DS011520 www.fairchildsemi.com

5 4 Absolute Maximum Ratings Recommended Operating 2 (Note 1) C Conditions (Note 2) H Supply Voltage (VCC) (cid:16)0.5V to (cid:14)7.0V 4V DC Input Voltage (VIN) (T/R, OE) (cid:16)0.5V to 7.0V Supply Voltage (VCC) 2.0V to 5.5V 7 DC Output Voltage (VOUT) (cid:16)0.5V to VCC (cid:14) 0.5V Input Voltage (VIN)(T/R, OE) 0V to 5.5V Input Diode Current (IIK) (T/R, OE) (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 a 100 ns/V Storage Temperature (TSTG) (cid:16)65qC to (cid:14)150qC VCC 5.0V r 0.5V 0 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 or I/O pins 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 1.50 1.50 V Input Voltage 3.0 (cid:16) 5.5 0.7 VCC 0.7 VCC VIL LOW Level 2.0 0.50 0.50 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 VIN VCC or GND Off-State Current 5.5 r0.25 r2.5 PA VOUT VCC or GND VIN OE VIH or VIL IIN Input Leakage 0 (cid:16) 5.5 r0.1 r1.0 PA VIN 5.5V or GND (T/R, OE) Current ICC Quiescent Supply Current 5.5 4.0 40.0 PA VIN VCC or GND www.fairchildsemi.com 2

7 Noise Characteristics 4 V H VCC TA 25qC C Symbol Parameter Units Conditions (V) Typ Limits 2 4 VOLP Quiet Output Maximum 5.0 0.9 1.2 V CL 50 pF 5 (Note 3) Dynamic VOL VOLV Quiet Output Minimum 5.0 (cid:16)0.9 (cid:16)1.2 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 LOW Level 5.0 1.5 V CL 50 pF (Note 3) Dynamic Input Voltage Note 3: Parameter guaranteed by design. AC Electrical Characteristics VCC TA 25qC TA (cid:16)40qC to (cid:14)85qC Symbol Parameter Units Conditions (V) Min Typ Max Min Max 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 4.0 5.5 1.0 6.5 ns CL 15 pF 5.5 7.5 1.0 8.5 CL 50 pF tPZL 3-STATE Output 3.3 r 0.3 8.5 13.2 1.0 15.5 ns CL 15 pF tPZH Enable Time 5.0 r 0.5 151..80 186.5.7 11..00 1190..00 ns RL 1 k: CCLL 5105 ppFF 7.3 10.6 1.0 12.0 CL 50 pF ttPPLHZZ 3D-iSsaTbAlTeE T iOmuetput 35..03 rr 00..53 171..05 195.7.8 11..00 1118..00 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 (T/R, OE) CI/O Output Capacitance 8 pF VCC 5.0V CPD Power Dissipation 21 pF (Note 5) Capacitance Note 4: Parameter guaranteed by design. tOSLH |tPLH max (cid:16) tPLH min|; tOSHL |tPHL max (cid:16) tPHL min| 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). 3 www.fairchildsemi.com

5 4 Physical Dimensions 2 inches (millimeters) unless otherwise noted 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 2 4 5 Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 5 www.fairchildsemi.com

5 4 Physical Dimensions 2 inches (millimeters) unless otherwise noted (Continued) 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 2 4 5 O c t a l B id i r e c t io n a l T r a n s c e iv e r w 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide i t Package Number N20A h 3 - 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

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Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: O N Semiconductor: 74VHC245MX 74VHC245SJ 74VHC245MTC 74VHC245M 74VHC245MTCX 74VHC245SJX 74VHC245N