54LS352/DM74LS352 Dual 4-Line to 1-Line Data Selectors/Multiplexers General Description Each of these data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR-invert gates. Separate strobe inputs are provided for each of the two four-line sections. Y Y Y Y Features Y Y Inverting version of DM54/74LS153 Permits multiplexing from N lines to 1 line Y Connection Diagram Performs parallel-to-serial conversion Strobe (enable) line provided for cascading (N lines to n lines) High fan-out, low-impedance, totem-pole outputs Typical average propagation delay times From data 15 ns From strobe 19 ns From select 22 ns Typical power dissipation 31 mW Function Table Select Inputs Dual-In-Line Package Data Inputs Strobe Output B A C0 C1 C2 C3 G Y X L L L L H H H H X L L H H L L H H X L H X X X X X X X X X L H X X X X X X X X X L H X X X X X X X X X L H H L L L L L L L L H H L H L H L H L Select inputs A and B are common to both sections. H e High Level, L e Low Level, X e Don’t Care TL/F/6425 – 1 Order Number 54LS352DMQB, 54LS352FMQB, DM74LS352M or DM74LS352N See NS Package Number J16A, M16A, N16E or W16A C1995 National Semiconductor Corporation TL/F/6425 RRD-B30M105/Printed in U. S. A. 54LS352/DM74LS352 Dual 4-Line to 1-Line Data Selectors/Multiplexers June 1989 Absolute Maximum Ratings (Note) Note: 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’’ table are not guaranteed at the absolute maximum ratings. The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation. If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range b 55§ C to a 125§ C 54LS DM74LS 0§ C to a 70§ C b 65§ C to a 150§ C Storage Temperature Range Recommended Operating Conditions Symbol 54LS352 Parameter VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage IOH High Level Output Current IOL Low Level Output Current TA Free Air Operating Temperature Electrical Characteristics Symbol DM74LS352 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 V 0.7 0.8 V b 0.4 b 0.4 mA 8 mA 70 §C 2 2 V 12 b 55 125 0 over recommended operating free air temperature range (unless otherwise noted) Parameter Conditions Min Typ (Note 1) Max Units b 1.5 V VI Input Clamp Voltage VCC e Min, II e b18 mA VOH High Level Output Voltage VCC e Min, IOH e Max VIL e Max, VIH e Min 54LS 2.5 DM74 2.7 Low Level Output Voltage VCC e Min, IOL e Max VIL e Max, VIH e Min 54LS DM74 0.35 0.5 IOL e 4 mA VCC e Min DM74 0.25 0.4 VCC e Max, VI e 10V 54LS VCC e Max, VI e 7V DM74 VOL II Input Current @ Max Input Voltage V 3.4 0.4 0.1 V mA IIH High Level Input Current VCC e Max, VI e 2.7V 20 mA IIL Low Level Input Current VCC e Max, VI e 0.4V b 0.4 mA IOS Short Circuit Output Current VCC e Max (Note 2) Supply Current VCC e Max (Note 3) ICC 54LS b 20 b 100 DM74 b 20 b 100 Note 1: All typicals are at VCC e 5V, TA e 25§ C. Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second. Note 3: ICC is measured with all outputs open and all other inputs at ground. 2 6.2 10 mA mA Switching Characteristics Symbol Parameter at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load) From (Input) To (Output) 54LS DM74LS CL e 15 pF CL e 50 pF RL e 2 kX Min Max Min Units Max tPLH Propagation Delay Time Low to High Level Output Data to Y 12 24 ns tPHL Propagation Delay Time High to Low Level Output Data to Y 12 35 ns tPLH Propagation Delay Time Low to High Level Output Select to Y 22 33 ns tPHL Propagation Delay Time High to Low Level Output Select to Y 38 47 ns tPLH Propagation Delay Time Low to High Level Output Strobe to Y 15 29 ns tPHL Propagation Delay Time High to Low Level Output Strobe to Y 20 41 ns Logic Diagram TL/F/6425 – 2 3 Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number 54LS352DMQB NS Package Number J16A 16-Lead Small Outline Molded Package (M) Order Number DM74LS352M NS Package Number M16A 4 Physical Dimensions inches (millimeters) (Continued) 16-Lead Molded Dual-In-Line Package (N) Order Number DM74LS352N NS Package Number N16E 5 54LS352/DM74LS352 Dual 4-Line to 1-Line Data Selectors/Multiplexers Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number 54LS352FMQB NS Package Number W16A LIFE SUPPORT POLICY NATIONAL’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 NATIONAL SEMICONDUCTOR CORPORATION. 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