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 1999 H C 1 3 8 74VHC138 3 - t 3-to-8 Decoder/Demultiplexer o - 8 D General Description 0V to 7V can be applied to the input pins without regard to e the supply voltage. This device can be used to interface 5V c The VHC138 is an advanced high speed CMOS 3-to-8 to 3V systems and two supply systems such as battery o decoder/demultiplexer fabricated with silicon gate CMOS back up. This circuit prevents device destruction due to de technology. It achieves the high speed operation similar to mismatched supply and input voltages. r equivalent Bipolar Schottky TTL while maintaining the /D CMOS low power dissipation. Features e m Wanhde An2 t)h dee dteervmicinee i sw ehnicahb loende, 3o f bthinea oryu tspeuletsc t( Oin0p–uOts7 )( Aw0il,l gAo1 n High Speed: tPD = 5.7ns (typ) at TA = 25(cid:176)C ul LOW. When enable input E3 is held LOW or either E1 or E2 n Low power dissipation: ICC = 4 m A (max.) at TA = 25(cid:176)C tip is held HIGH, decoding function is inhibited and all outputs n High noise immunity: VNIH = VNIL = 28% VCC (min.) le go HIGH. E3, E1 and E2 inputs are provided to ease cas- n Power down protection provided on all inputs x cade connection and for use as an address decoder for n Pin and function compatible with 74HC138 er memory systems. An input protection circuit ensures that Ordering Code: Order Number Package Number Package Description 74VHC138M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow 74VHC138SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74VHC138MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74VHC138N N16E 16-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. Logic Symbols Connection Diagram IEEE/IEC Pin Descriptions Pin Names Description A0–A2 Address Inputs E1–E2 Enable Inputs E3 Enable Input O0–O7 Outputs © 1999 Fairchild Semiconductor Corporation DS011537.prf www.fairchildsemi.com

8 3 1 C Truth Table H V 4 Inputs Outputs 7 E1 E2 E3 A0 A1 A2 O0 O1 O2 O3 O4 O5 O6 O7 H X X X X X H H H H H H H H X H X X X X H H H H H H H H X X L X X X H H H H H H H H L L H L L L L H H H H H H H L L H H L L H L H H H H H H L L H L H L H H L H H H H H L L H H H L H H H L H H H H L L H L L H H H H H L H H H L L H H L H H H H H H L H H L L H L H H H H H H H H L H L L H H H H H H H H H H H L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial www.fairchildsemi.com 2

7 Absolute Maximum Ratings Recommended Operating 4 (Note 1) V Supply Voltage (VCC) - 0.5V to +7.0V Conditions (Note 2) HC DC Input Voltage (VIN) - 0.5V to +7.0V Supply Voltage (VCC) 2.0V to +5.5V 13 DC Output Voltage (VOUT) - 0.5V to VCC + 0.5V Input Voltage (VIN) 0V to +5.5V 8 Input Diode Current (IIK) - 20 mA Output Voltage (VOUT) 0V to VCC Output Diode Current (IOK) – 20 mA Operating Temperature (TOPR) - 40(cid:176)C to +85(cid:176)C DC Output Current (IOUT) – 25 mA Input Rise and Fall Time (tr, tf) DC VCC/GND Current (ICC) – 75 mA VCC = 3.3V – 0.3V 0 ~ 100 ns/V Storage Temperature (TSTG) - 65(cid:176)C to +150(cid:176)C VCC = 5.0V – 0.5V 0 ~ 20 ns/V Lead Temperature (TL) Note 1: Absolute Maximum Ratings are values beyond which the device (Soldering, 10 seconds) 260(cid:176)C may be damaged or have its useful life impaired. The databook specifica- 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 Symbol Parameter VCC TA = 25(cid:176)C TA = - 40(cid:176)C to +85(cid:176)C Units Conditions (V) Min Typ Max Min Max VIH HIGH Level Input Voltage 2.0 1.50 1.50 V 3.0 - 5.5 0.7 VCC 0.7 VCC VIL LOW Level Input Voltage 2.0 0.50 0.50 V 3.0 - 5.5 0.3 VCC 0.3 VCC VOH HIGH Level Output Voltage 2.0 1.9 2.0 1.9 VIN = VIH IOH = - 50 m A 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 = - 4 mA 4.5 3.94 3.80 IOH = - 8 mA VOL LOW Level Output Voltage 2.0 0.0 0.1 0.1 VIN = VIH IOL = 50 m A 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 IIN Input Leakage Current 0 - 5.5 – 0.1 – 1.0 m A VIN = 5.5V or GND ICC Quiescent Supply Current 5.5 4.0 40.0 m A VIN = VCC or GND 3 www.fairchildsemi.com

8 3 AC Electrical Characteristics 1 C H Symbol Parameter VCC TA = 25(cid:176)C TA = - 40(cid:176)C to +85(cid:176)C Units Conditions V (V) Min Typ Max Min Max 4 7 tPLH Propagation Delay 3.3 – 0.3 8.2 11.4 1.0 13.5 CL = 15 pF ns tPHL An to On 10.0 15.8 1.0 18.0 CL = 50 pF 5.0 – 0.5 5.7 8.1 1.0 9.5 ns CL = 15 pF 7.2 10.1 1.0 11.5 CL = 50 pF tPLH Propagation Delay 3.3 – 0.3 8.1 12.8 1.0 15.0 CL = 15 pF ns tPHL E3 to On 10.6 16.3 1.0 18.5 CL = 50 pF 5.0 – 0.5 5.6 8.1 1.0 9.5 ns CL = 15 pF 7.1 10.1 1.0 11.5 CL = 50 pF tPLH Propagation Delay 3.3 – 0.3 8.2 11.4 1.0 13.5 CL = 15 pF ns tPHL E1 or E2 to On 10.7 14.9 1.0 17.0 CL = 50 pF 5.0 – 0.5 5.8 8.1 1.0 9.5 ns CL = 15 pF 7.3 10.1 1.0 11.5 CL = 50 pF CIN Input Capacitance 4 10 10 pF VCC = Open CPD Power Dissipation 34 pF (Note 3) Capacitance Note 3: 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 + ICC. www.fairchildsemi.com 4

7 Physical Dimensions 4 inches (millimeters) unless otherwise noted V H C 1 3 8 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Package Number M16A 16-Lead Small Outline Package (SOP) EIAJ TYPE II, 5.3mm Wide Package Number M16D 5 www.fairchildsemi.com

8 3 Physical Dimensions 1 inches (millimeters) unless otherwise noted (Continued) C H V 4 7 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC16 www.fairchildsemi.com 6

7 Physical Dimensions 4 inches (millimeters) unless otherwise noted (Continued) V H C 1 3 8 3 - t o - 8 D e c o d e r / D e m u l t i p l e x e r 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Package Number N16E 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. 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.

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: 74VHC138SJX 74VHC138MTC 74VHC138M 74VHC138MTCX 74VHC138MX