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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. Revised October 2003 74LVX138 Low Voltage 1-of-8 Decoder/Demultiplexer General Description Features The LVX138 is a high-speed 1-of-8 decoder/demultiplexer. This device is ideally suited for high-speed bipolar memory chip select address decoding. The multiple input enables allow parallel expansion to a 1-of-24 decoder using just three LVX138 devices or a 1-of-32 decoder using four LVX138 devices and one inverter. Input voltage level translation from 5V to 3V Ideal for low power/low noise 3.3V applications Guaranteed simultaneous switching noise level and dynamic threshold performance Ordering Code: Order Number 74LVX138M 74LVX138SJ 74LVX138MTC Package Number Package Description M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Devices also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code. Logic Symbols Connection Diagram Pin Descriptions Pin Names IEEE/IEC (c) 2003 Fairchild Semiconductor Corporation DS011615 Description A0-A2 Address Inputs E1 - E2 Enable Inputs E3 Enable Input O0-O7 Outputs www.fairchildsemi.com 74LVX138 Low Voltage 1-of-8 Decoder/Demultiplexer June 1993 74LVX138 Functional Description All outputs will be HIGH unless E1 and E2 are LOW and E3 is HIGH. The LVX138 high-speed 1-of-8 decoder/demultiplexer accepts three binary weighted inputs (A0, A1, A2) and, when enabled, provides eight mutually exclusive activeLOW outputs (O0-O7). The LVX138 features three Enable inputs, two active-LOW (E1, E2) and one active-HIGH (E3). The LVX138 can be used as an 8-output demultiplexer by using one of the active LOW Enable inputs as the data input and the other Enable inputs as strobes. The Enable inputs which are not used must be permanently tied to their appropriate active-HIGH or active-LOW state. Truth Table Inputs Outputs E1 E2 E3 A0 A1 A2 O0 O1 O2 O3 O4 O5 O6 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 O7 H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.fairchildsemi.com 2 Recommended Operating Conditions (Note 2) -0.5V to +7.0V Supply Voltage (VCC) DC Input Diode Current (IIK) Supply Voltage (VCC) VI = -0.5V -20 mA -0.5V to 7V DC Input Voltage (VI) 2.0V to 3.6V Input Voltage (VI) 0V to 5.5V Output Voltage (VO) DC Output Diode Current (IOK) 0V to VCC -40C to +85C Operating Temperature (TA) VO = -0.5V -20 mA VO = VCC + 0.5V +20 mA Input Rise and Fall Time (t/V) -0.5V to VCC + 0.5V DC Output Voltage (VO) Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. DC Output Source 25 mA or Sink Current (IO) 75 mA DC VCC or Ground Current (ICC or IGND) -65C to +150 C Storage Temperature (TSTG) Power Dissipation 0 ns/V to 100 ns/V Note 2: Unused inputs must be held HIGH or LOW. They may not float. 180 mW DC Electrical Characteristics Symbol VIH VIL VOH VOL Parameter VCC TA = +25C Min TA = -40C to +85C Typ Max Min HIGH Level 2.0 1.5 1.5 Input Voltage 3.0 2.0 2.0 3.6 2.4 2.4 2.0 0.5 0.5 Input Voltage 3.0 0.8 0.8 3.6 0.8 0.8 HIGH Level 2.0 1.9 2.0 1.9 3.0 2.9 3.0 2.9 3.0 2.58 Conditions V LOW Level Output Voltage Units Max V VIN = VIL or VIH IOH = -50 A IOH = -50 A V IOH = -4 mA 2.48 LOW Level 2.0 0.0 Output Voltage 3.0 0.0 0.1 VIN = VIL or VIH IOL = 50 A 0.1 0.1 0.1 3.0 0.36 0.44 IOL = 50 A V IOL = 4 mA IIN Input Leakage Current 3.6 0.1 1.0 A VIN = 5.5V or GND ICC Quiescent Supply Current 3.6 4.0 40.0 A VIN = VCC or GND Noise Characteristics (Note 3) Symbol VCC Parameter (V) TA = 25C Typ Limit Units CL (pF) VOLP Quiet Output Maximum Dynamic VOL 3.3 0.3 0.5 V 50 VOLV Quiet Output Minimum Dynamic VOL 3.3 -0.3 -0.5 V 50 VIHD Minimum HIGH Level Dynamic Input Voltage 3.3 2.0 V 50 VILD Maximum LOW Level Dynamic Input Voltage 3.3 0.8 V 50 Note 3: Input tr = tf = 3 ns 3 www.fairchildsemi.com 74LVX138 Absolute Maximum Ratings(Note 1) 74LVX138 AC Electrical Characteristics Symbol Parameter tPLH Propagation tPHL Delay Time An to On tPLH Propagation tPHL Delay Time E1 or E2 to On tPLH Propagation tPHL Delay Time E3 to On TA = +25C VCC (V) 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 Min TA = -40C to +85C Units CL (pF) Typ Max Min Max 7.1 13.8 1.0 16.5 9.6 17.3 1.0 20.0 5.5 8.8 1.0 10.5 8.0 12.3 1.0 14.0 50 8.8 16.0 1.0 18.5 15 15 50 ns 15 11.3 19.5 1.0 22.0 6.9 10.4 1.0 11.5 9.4 13.9 1.0 15.0 50 8.7 16.3 1.0 19.5 15 11.2 19.8 1.0 23.0 6.8 10.6 1.0 12.5 9.3 14.1 1.0 50 ns 15 50 ns 15 16.0 50 tOSHL Output to Output 2.7 1.5 1.5 50 tOSLH Skew (Note 4) 3.3 1.5 1.5 ns Note 4: Parameter guaranteed by design. tOSLH = |tPLHm-tPLHn|, tOSHL = |tPHLm-tPHLn| Capacitance Symbol TA = +25C Parameter Min TA = -40C to +85C Typ Max 10 CIN Input Capacitance 4 CPD Power Dissipation Capacitance (Note 5) 34 Min Max 10 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: CPD x VCC x IIN + ICC www.fairchildsemi.com 4 Units pF pF 74LVX138 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M16A 5 www.fairchildsemi.com 74LVX138 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D www.fairchildsemi.com 6 74LVX138 Low Voltage 1-of-8 Decoder/Demultiplexer Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC16 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. 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