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DM54LS158 Dataheets PDF



Part Number DM54LS158
Manufacturers National Semiconductor
Logo National Semiconductor
Description Quad 2-Line to 1-Line Data Selectors/Multiplexers
Datasheet DM54LS158 DatasheetDM54LS158 Datasheet (PDF)

54LS157 DM54LS157 DM74LS157 54LS158 DM54LS158 DM74LS158 Quad 2-Line to 1-Line Data Selectors Multiplexers June 1989 54LS157 DM54LS157 DM74LS157 54LS158 DM54LS158 DM74LS158 Quad 2-Line to 1-Line Data Selectors Multiplexers General Description 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 .

  DM54LS158   DM54LS158


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54LS157 DM54LS157 DM74LS157 54LS158 DM54LS158 DM74LS158 Quad 2-Line to 1-Line Data Selectors Multiplexers June 1989 54LS157 DM54LS157 DM74LS157 54LS158 DM54LS158 DM74LS158 Quad 2-Line to 1-Line Data Selectors Multiplexers General Description 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 Features Y Y Y Applications 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 – 1 TL F 6396 – 2 Order Number 54LS157DMQB 54LS157FMQB 54LS157LMQB DM54LS157J DM54LS157W DM74LS157M or DM74LS157N See NS Package Number E20A J16A M16A N16E or W16A Order Number 54LS158DMQB 54LS158FMQB 54LS158LMQB DM54LS158J DM54LS158W DM74LS158M or DM74LS158N See NS Package Number E20A J16A M16A N16E or W16A Function Table Inputs Strobe H L L L L Select X L L H H A X L H X X B X X X L H Output Y LS157 L L H L H LS158 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 Absolute Maximum Ratings (Note) 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 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 Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Min Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Free Air Operating Temperature b 55 DM54LS157 Nom 5 Max 55 Min 4 75 2 07 b0 4 DM74LS157 Nom 5 Max 5 25 Units V V 08 b0 4 45 2 V mA mA C 4 125 0 8 70 ’LS157 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol VI VOH Parameter Input Clamp Voltage High Level Output Voltage Low Level Output Voltage Conditions VCC e Min II e b18 mA VCC e Min IOH e Max VIL e Max VIH e Min VCC e Min IOL e Max VIL e Max VIH e Min IOL e 4 mA VCC e Min II Input Current Input Voltage Max VCC e Max VI e 7V VCC e Max VI e 2 7V VCC e Max VI e 0 4V VCC e Max (Note 2) VCC e Max (Note 3) DM54 DM74 DM54 DM74 DM74 S or G A or B S or G A or B S or G A or B DM54 DM74 b 20 b 20 Min Typ (Note 1) Max b1 5 Units V V 25 27 34 34 0 25 0 35 0 25 04 05 04 02 01 40 20 b0 8 b0 4 b 100 b 100 VOL V mA IIH High Level Input Current Low Level Input Current Short Circuit Output Current Supply Current mA IIL mA IOS mA mA ICC 97 16 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 ’LS157 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) Data to Y Data to Y Strobe to Y Strobe to Y Select to Y Select to Y RL e 2 kX CL e 15 pF Min tPLH tPHL tPLH tPHL tPLH tPHL Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output Max 14 14 20 21 23 27 CL e 50 pF Min Max 18 23 24 30 28 32 ns ns ns ns ns ns Units Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Min Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Free Air Operating Temperature b 55 DM54LS158 Nom 5 Max 55 Min 4 75 2 07 b0 4 DM74LS158 Nom 5 Max 5 25 Units V V 08 b0 4 45 2 V mA mA C 4 125 0 8 70 ’LS158 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol VI VOH VOL Parameter Input Clamp.


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