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.

M February 1984 M Revised May 2005 7 4 H C T MM74HCT245 2 4 5 Octal 3-STATE Transceiver O c t General Description Features a l 3 The MM74HCT245 3-STATE bi-directional buffer utilizes (cid:1) TTL input compatible - S advanced silicon-gate CMOS technology and is intended (cid:1) 3-STATE outputs for connection to system busses T for two-way asynchronous communication between data (cid:1) High output drive current: 6 mA (min) A buses. It has high drive current outputs which enable high T speed operation even when driving large bus capaci- (cid:1) High speed: 16 ns typical propagation delay E tances. This circuit possesses the low power consumption (cid:1) Low power: 80 PA (74HCT Series) T of CMOS circuitry, yet has speeds comparable to low ra power Schottky TTL circuits. n s This device is TTL input compatible and can drive up to 15 c LS-TTL loads, and all inputs are protected from damage e due to static discharge by diodes to VCC and ground. iv e The MM74HCT245 has one active low enable input (G), r and a direction control (DIR). When the DIR input is HIGH, data flows from the A inputs to the B outputs. When DIR is LOW, data flows from B to A. MM74HCT devices are intended to interface between TTL and NMOS components and standard CMOS devices. These parts are also plug-in replacements for LS-TTL devices and can be used to reduce power consumption in existing designs. Ordering Code: Order Number Package Number Package Description MM74HCT245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide MM74HCT245SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MM74HCT245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide MM74HCT245N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Truth Table Pin Assignments for DIP, SOIC, SOP and TSSOP Control Operation Inputs G DIR 245 L L B data to A bus L H A data to B bus H X isolation H HIGH Level L LOW Level X Irrelevant Top View © 2005 Fairchild Semiconductor Corporation DS005366 www.fairchildsemi.com

5 4 Logic Diagram 2 T C H 4 7 M M www.fairchildsemi.com 2

M Absolute Maximum Ratings(Note 1) Recommended Operating M (Note 2) Conditions 74 H Supply Voltage (VCC) (cid:16)0.5 to (cid:14)7.0V Min Max Units C DC Input Voltage (VIN) (cid:16)1.5 to VCC (cid:14)1.5V Supply Voltage (VCC) 4.5 5.5 V T2 DC Output Voltage (VOUT) (cid:16)0.5 to VCC (cid:14)0.5V DC Input or Output Voltage 4 5 Clamp Diode Current (IIK, IOK) r20 mA (VIN, VOUT) 0 VCC V DC Output Current, r35 mA Operating Temperature Range (TA) (cid:16)40 (cid:14)85 qC DC VCC or GND Current, per pin (ICC) r70 mA Input Rise or Fall Times Storage Temperature Range (TSTG) (cid:16)65qC to (cid:14)150qC (tr, tf) 500 ns Power Dissipation (PD) Note 1: Absolute Maximum Ratings are those values beyond which dam- (Note 3) 600 mW age to the device may occur. Note 2: Unless otherwise specified all voltages are referenced to ground. S.O. Package only 500 mW Note 3: Power Dissipation temperature derating — plastic “N” package: (cid:16) Lead Temperature (TL) 12 mW/qC from 65qC to 85qC. (Soldering 10 seconds) 260qC DC Electrical Characteristics (VCC 5V r 10%, unless otherwise specified.) TA 25qC TA (cid:16)40 to 85qC TA (cid:16)55 to 125qC Symbol Parameter Conditions Units Typ Guaranteed Limits VIH Minimum HIGH Level 2.0 2.0 2.0 V Input Voltage VIL Maximum LOW Level 0.8 0.8 0.8 V Input Voltage VOH Minimum HIGH Level VIN VIH or VIL Output Voltage |IOUT| 20 PA VCC VCC(cid:16) 0.1 VCC(cid:16) 0.1 VCC(cid:16) 0.1 V |IOUT| 6.0 mA, VCC 4.5V 4.2 3.98 3.84 3.7 V |IOUT| 7.2 mA, VCC 5.5V 5.2 4.98 4.84 4.7 V VOL Maximum LOW Level VIN VIH or VIL Voltage |IOUT| 20 PA 0 0.1 0.1 0.1 V |IOUT| 6.0 mA, VCC 4.5V 0.2 0.26 0.33 0.4 V |IOUT| 7.2 mA, VCC 5.5V 0.2 0.26 0.33 0.4 V IIN Maximum Input VIN VCC or GND, r0.1 r1.0 r1.0 PA Current VIH or VIL, Pin 1 or 19 IOZ Maximum 3-STATE VOUT VCC or GND r0.5 r5.0 r10 PA Output Leakage G VIH Current ICC Maximum Quiescent VIN VCC or GND 8 80 160 PA Supply Current IOUT 0 PA VIN 2.4V or 0.5V (Note 4) 0.6 1.0 1.3 1.5 mA Note 4: Measured per input. All other inputs at VCC or ground. 3 www.fairchildsemi.com

5 4 AC Electrical Characteristics 2 T C H VCC 5.0V, tr tf 6 ns, TA 25qC (unless otherwise specified) 4 Guaranteed 7 Symbol Parameter Conditions Typ Units Limit M M tPHL, tPLH Maximum Output CL 45 pF 16 20 ns Propagation Delay tPZL, tPZH Maximum Output CL 45 pF 29 40 ns Enable Time RL 1 k: tPLZ, tPHZ Maximum Output CL 5 pF 20 25 ns Disable Time RL 1 k: AC Electrical Characteristics VCC 5.0V r 10%, tr tf 6 ns (unless otherwise specified) TA 25qC TA (cid:16)40 to 85qC TA (cid:16)55 to 125qC Symbol Parameter Conditions Units Typ Guaranteed Limits tPHL, tPLH Maximum Output CL 50 pF 17 23 29 34 ns Propagation Delay CL 150 pF 24 30 38 45 ns tPZL Maximum Output RL 1 k: 31 42 53 63 ns Enable Time CL 50 pF tPZH Maximum Output RL 1 k: 23 33 41 49 ns Enable Time CL 50 pF tPHZ, tPLZ Maximum Output RL 1 k: 21 30 38 45 ns Disable Time CL 50 pF tTHL, tTLH Maximum Output CL 50 pF 8 12 15 18 ns Rise and Fall Time CIN Maximum Input 10 15 15 15 pF Capacitance COUT Maximum Output/Input 20 25 25 25 pF Capacitance CPD Power Dissipation G VCC (Note 5) 7 pF Capacitance G GND 100 pF Note 5: CPD determines the no load power consumption, PD CPD VCC2 f (cid:14) ICCVCC, and the no load dynamic current consumption, IS CPD VCC f (cid:14) ICC. www.fairchildsemi.com 4

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

5 4 Physical Dimensions 2 inches (millimeters) unless otherwise noted (Continued) T C H 4 7 M M 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D www.fairchildsemi.com 6

M Physical Dimensions inches (millimeters) unless otherwise noted (Continued) M 7 4 H C T 2 4 5 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 7 www.fairchildsemi.com

r e Physical Dimensions v inches (millimeters) unless otherwise noted (Continued) i e c s n a r T E T A T S - 3 l a t c O 5 4 2 T C H 4 7 M M 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Package Number N20A 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: MM74HCT245WM MM74HCT245SJ MM74HCT245WMX MM74HCT245MTC MM74HCT245SJX MM74HCT245N MM74HCT245MTCX