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Part: DM54154
Category:
Logic
-> Decoder/Demultiplexers
-> Bipolar->LS Family
Description: 4-line to 16-line Decoder/demultiplexer
Company: National Semiconductor Corporation
Datasheet: Download DM54154 datasheet File size : 154 kB
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Datasheet text preview:
54154 DM54154 DM74154 4-Line to 16-Line Decoders Demultiplexers
June 1989
54154 DM54154 DM74154 4-Line to 16-Line Decoders Demultiplexers
General Description
Each or these 4-line-to-16-line decoders utilizes TTL circuitry to decode four binary-coded inputs into one of sixteen mutually exclusive outputs when both the strobe inputs G1 and G2 are low The demultiplexing function is performed by using the 4 input lines to address the output line passing data from one of the strobe inputs with the other strobe input low When either strobe input is high all outputs are high These demultiplexers are ideally suited for implementing high-performance memory decoders All inputs are buffered and input clamping diodes are provided to minimize transmission-line effects and thereby simplify system design C
Y
eatures
Decodes 4 binary-coded inputs into one of 16 mutually exclusive outputs Y Performs the demultiplexing function by distributing data from one input line to any one of 16 outputs Y Input clamping diodes simplify system design Y High fan-out low-impedance totem-pole outputs Y Typical propagation delay 3 levels of logic 19 ns Strobe 18 ns Y Typical power dissipation 170 mW Y Alternate Military Aerospace device (54154) is availF D able Contact a National Semiconductor Sales Office istributor for specifications
onnection Diagram
Dual-In-Line Package
TL F 6548 1
Order Number 54154DMQB 54154FMQB DM54154J or DM74154N See NS Package Number J24A N24A or W24C
C1995 National Semiconductor Corporation
TL F 6548
RRD-B30M105 Printed in U S A
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 T he ``Recommended Operating Conditions'' table will define the conditions for actual device operation
p If Military Aerospace specified devices are required lease contact the National Semiconductor Sales S Office Distributors for availability and specifications upply Voltage Input Voltage 7V 5 5V
Operating Free Air Temperature Range R b 55 C to a 125 C DM54 and 54 DM74 0 C to a 70 C Storage Temperature Range
b 65
C to a 150 C
ecommended 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
DM54154 Nom 5 Max 55 08
b0 8
DM74154 Min 4 75 2 08
b0 8
Units Max 5 25 V V V mA mA
Nom 5
45 2
16 125 0
16 70
C
Electrical Characteristics
Symbol VI VOH VOL II IIH IIL IOS ICC Parameter Input Clamp Voltage High Level Output Voltage Low Level Output Voltage Input Current Input Voltage
Max
over recommended operating free air temperature range (unless otherwise noted) Conditions VCC e Min II e b12 mA VCC e Min IOH e Max VIL e Max VIH e Min VCC e Min IOL e Max VIH e Min VIL e Max VCC e Max VI e 5 5V VCC e Max VI e 2 4V VCC e Max VI e 0 4V VCC e Max (Note 2) VCC e Max (Note 3) DM54 DM74 DM54 DM74
b 20 b 18
Min
Typ (Note 1)
Max
b1 5
Units V V
24
32 0 25 04 1 40
b1 6 b 55 b 57
V mA mA mA mA mA
High Level Input Current Low Level Input Current Short Circuit Output Current Supply Current
34 34
49 56
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 o S te 3 ICC is measured with all outputs open and all inputs grounded
witching Characteristics
Symbol tPLH tPHL tPLH tPHL Parameter
at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) From (Input) To (Output) Data to Output Data to Output Strobe to Output Strobe to Output RL e 400X CL e 15 pF Min Max 36 33 30 27 ns ns ns ns Units
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
2
Function Table
Inputs G1 L L L L L L L L L L L L L L L L L H H G2 L L L L L L L L L L L L L L L L H L H D L L L L L L L L H H H H H H H H X X X C L L L L H H H H L L L L H H H H X X X B L L H H L L H H L L H H L L H H X X X A L H L H L H L H L H L H L H L H X X X 0 L H H H H H H H H H H H H H H H H H H 1 H L H H H H H H H H H H H H H H H H H 2 H H L H H H H H H H H H H H H H H H H 3 H H H L H H H H H H H H H H H H H H H 4 H H H H L H H H H H H H H H H H H H H 5 H H H H H L H H H H H H H H H H H H H 6 H H H H H H L H H H H H H H H H H H H 7 H H H H H H H L H H H H H H H H H H H Outputs 8 H H H H H H H H L H H H H H H H H H H 9 H H H H H H H H H L H H H H H H H H H 10 H H H H H H H H H H L H H H H H H H H 11 H H H H H H H H H H H L H H H H H H H 12 H H H H H H H H H H H H L H H H H H H 13 H H H H H H H H H H H H H L H H H H H 14 H H H H H H H H H H H H H H L H H H H 15 H H H H H H H H H H H H H H H L H H H
H e High Level L e Low Level X e Don't Care
Logic Diagram
TL F 6548 2
3
4
Physical Dimensions inches (millimeters)
24-Lead Ceramic Dual-In-Line Package (J) Order Number 54154DMQB or DM54154J NS Package Number J24A
24-Lead Molded Dual-In-Line Package (N) Order Number DM74154N NS Package Number N24A
5
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