54LS157/DM54LS157/DM74LS157, 54LS158/DM54LS158/DM74LS158 Quad 2-Line to 1-Line Data Selectors/Multiplexers General Description Features These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four output gates. A separate strobe input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The LS157 presents true data whereas the LS158 presents inverted data to minimize propagation delay time. Y Applications Y Y Y Y Y Y Y Expand any data input point Multiplex dual data buses Generate four functions of two variables (one variable is common) Source programmable counters Buffered inputs and outputs Typical Propagation Time LS157 9 ns LS158 7 ns Typical Power Dissipation LS157 49 mW LS158 24 mW Alternate Military/Aerospace device (54LS157, 54LS158) is available. Contact a National Semiconductor Sales Office/Distributor for specifications. Connection Diagrams Dual-In-Line Package Dual-In-Line Package TL/F/6396 - 2 TL/F/6396 - 1 Order Number 54LS158DMQB, 54LS158FMQB, 54LS158LMQB, DM54LS158J, DM54LS158W, DM74LS158M or DM74LS158N See NS Package Number E20A, J16A, M16A, N16E or W16A Order Number 54LS157DMQB, 54LS157FMQB, 54LS157LMQB, DM54LS157J, DM54LS157W, DM74LS157M or DM74LS157N See NS Package Number E20A, J16A, M16A, N16E or W16A Function Table Inputs Output Y Strobe Select A B LS157 LS158 H L L L L X L L H H X L H X X X X X L H L L H L H H H L H L H e High Level, L e Low Level, X e Don't Care C1995 National Semiconductor Corporation TL/F/6396 RRD-B30M105/Printed in U. S. A. 54LS157/DM54LS157/DM74LS157, 54LS158/DM54LS158/DM74LS158 Quad 2-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 DM54LS and 54LS DM74LS 0 C to a 70 C Storage Temperature Range b 65 C to a 150 C Recommended Operating Conditions Symbol DM54LS157 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 DM74LS157 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 2 2 V 0.7 0.8 V b 0.4 b 0.4 mA 4 b 55 V 125 0 8 mA 70 C Max Units b 1.5 V 'LS157 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol VI VOH VOL II IIH IIL IOS ICC Parameter Conditions Min Typ (Note 1) Input Clamp Voltage VCC e Min, II e b18 mA High Level Output Voltage VCC e Min, IOH e Max VIL e Max, VIH e Min Low Level Output Voltage VCC e Min, IOL e Max VIL e Max, VIH e Min DM54 0.25 0.4 DM74 0.35 0.5 IOL e 4 mA, VCC e Min DM74 0.25 0.4 Input Current @ Max Input Voltage VCC e Max VI e 7V S or G 0.2 A or B 0.1 High Level Input Current VCC e Max VI e 2.7V S or G 40 A or B 20 Low Level Input Current VCC e Max VI e 0.4V S or G b 0.8 A or B b 0.4 Short Circuit Output Current VCC e Max (Note 2) Supply Current VCC e Max (Note 3) DM54 2.5 3.4 DM74 2.7 3.4 DM54 b 20 b 100 DM74 b 20 b 100 9.7 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 4.5V applied to all inputs and all outputs open. 2 V 16 V mA mA mA mA mA 'LS157 Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) Symbol RL e 2 kX From (Input) To (Output) Parameter CL e 15 pF Min CL e 50 pF Max Min Units Max tPLH Propagation Delay Time Low to High Level Output Data to Y 14 18 ns tPHL Propagation Delay Time High to Low Level Output Data to Y 14 23 ns tPLH Propagation Delay Time Low to High Level Output Strobe to Y 20 24 ns tPHL Propagation Delay Time High to Low Level Output Strobe to Y 21 30 ns tPLH Propagation Delay Time Low to High Level Output Select to Y 23 28 ns tPHL Propagation Delay Time High to Low Level Output Select to Y 27 32 ns Recommended Operating Conditions Symbol DM54LS158 Parameter DM74LS158 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 V 0.7 0.8 V VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage IOH High Level Output Current b 0.4 b 0.4 mA IOL Low Level Output Current 4 8 mA TA Free Air Operating Temperature 70 C Max Units b 1.5 V 2 2 b 55 125 V 0 'LS158 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ (Note 1) 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 DM54 2.5 3.4 DM74 2.7 3.4 Low Level Output Voltage VCC e Min, IOL e Max VIL e Max, VIH e Min DM54 0.25 0.4 DM74 0.35 0.5 IOL e 4 mA, VCC e Min DM74 0.25 0.4 Input Current @ Max Input Voltage VCC e Max VI e 7V S or G 0.2 A or B 0.1 High Level Input Current VCC e Max VI e 2.7V S or G 40 A or B 20 Low Level Input Current VCC e Max VI e 0.4V S or G b 0.8 A or B b 0.4 Short Circuit Output Current VCC e Max (Note 2) Supply Current VCC e Max (Note 3) VOL II IIH IIL IOS ICC DM54 b 20 b 100 DM74 b 20 b 100 4.8 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 4.5V applied to all inputs and all outputs open. 3 V 8 V mA mA mA mA mA 'LS158 Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) Symbol Parameter From (Input) To (Output) RL e 2 kX CL e 15 pF Min Max CL e 50 pF Min Units Max tPLH Propagation Delay Time Low to High Level Output Data to Y 12 18 ns tPHL Propagation Delay Time High to Low Level Output Data to Y 12 21 ns tPLH Propagation Delay Time Low to High Level Output Strobe to Y 17 23 ns tPHL Propagation Delay Time High to Low Level Output Strobe to Y 18 28 ns tPLH Propagation Delay Time Low to High Level Output Select to Y 20 24 ns tPHL Propagation Delay Time High to Low Level Output Select to Y 24 36 ns Logic Diagrams LS157 LS158 TL/F/6396 - 4 TL/F/6396-3 4 5 Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier Package (E) Order Number 54LS157LMQB or 54LS158LMQB NS Package Number E20A 16-Lead Ceramic Dual-In-Line Package (J) Order Number 54LS157DMQB, 54LS158DMQB, DM54LS157J or DM54LS158J NS Package Number J16A 6 Physical Dimensions inches (millimeters) (Continued) 16-Lead Small Outline Molded Package (M) Order Number DM74LS157M or DM74LS158M NS Package Number M16A 16-Lead Molded Dual-In-Line Package (N) Order Number DM74LS157N or DM74LS158N NS Package Number N16E 7 54LS157/DM54LS157/DM74LS157, 54LS158/DM54LS158/DM74LS158 Quad 2-Line to 1-Line Data Selectors/Multiplexers Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number 54LS157FMQB, 54LS158FMQB, DM54LS157W or DM54LS158W 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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