July 1989 DM54LS450 DM74LS450 Multiplexer General Descriptio

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July 1989 DM54LS450 DM74LS450 Multiplexer General Descriptio

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DM54LS450 DM74LS450 Multiplexer
July 1989
DM54LS450 DM74LS450 Multiplexer
General Description
selects sixteen inputs through specified four binary select inputs true data output inverted data Propagation delays same both inputs addresses specified loading Outputs conform standard totem pole drive standard
Features Benefits
24-pin SKINNYDIP saves space Similar 74150 (Fat DIP) current inputs reduce loading
Connection Diagram
View
Standard Test Load
8338
8338
Order Number DM54LS450J DM74LS450J DM74LS450N DM74LS450V Package Number J24F N24C V28A
Function Table
Input Select
C1995 National Semiconductor Corporation 8338
Output
RRD-B30M115 Printed
Absolute Maximum Ratings
Military Aerospace specified devices required please contact National Semiconductor Sales Office Distributors availability specifications Supply Voltage Input Voltage Off-State Output Voltage Storage Temperature
Operating Conditions
Symbol Parameter Supply Voltage Operating Free-Air Temperature
Military
Commercial
Units
Case temperature
Electrical Characteristics Over Operating Conditions
Symbol Parameter Low-Level Input Voltage High-Level Input Voltage Input Clamp Voltage Low-Level Input Current High-Level Input Current Maximum Input Current Low-Level Output Voltage eb18
Test Conditions
Units
High-Level Output Voltage
Output Short-Circuit Current Supply Current
more than output should shorted time duration short-circuit should exceed second typical values
Switching Characteristics Over Operating Conditions
Symbol Parameter Test Conditions (See Test Load) 560X Military Commercial Units
Input
Logic Diagram
8338
Physical Dimensions inches (millimeters)
24-Pin Narrow Ceramic Dual-In-Line Package Order Number DM54LS450J DM74LS450J Package Number J24F
24-Pin Narrow Plastic Dual-In-Line Package Order Number DM74LS450N Package Number N24C
DM54LS450 DM74LS450 Multiplexer
Physical Dimensions inches (millimeters) (Continued)
28-Lead Plastic Chip Carrier Order Number DM74LS450V Package Number V28A
LIFE SUPPORT POLICY NATIONAL'S PRODUCTS AUTHORIZED CRITICAL COMPONENTS LIFE SUPPORT DEVICES SYSTEMS WITHOUT EXPRESS WRITTEN APPROVAL PRESIDENT NATIONAL SEMICONDUCTOR CORPORATION used herein Life support devices systems devices systems which intended surgical implant into body support sustain life whose failure perform when properly used accordance with instructions provided labeling reasonably expected result significant injury user
National Semiconductor Corporation 1111 West Bardin Road Arlington 76017 1(800) 272-9959 1(800) 737-7018
critical component component life support device system whose failure perform reasonably expected cause failure life support device system affect safety effectiveness
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National Semiconductor Japan 81-043-299-2309 81-043-299-2408
National does assume responsibility circuitry described circuit patent licenses implied National reserves right time without notice change said circuitry specifications

July 1989 DM54LS450 DM74LS450 Multiplexer General Descriptio

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