Fairchild Semiconductor DM74LS151SJX, DM74LS151N, DM74LS151MX, DM74LS151M, DM74LS151CW Datasheet
© 2000 Fairchild Semiconductor Corporation DS006392 www.fairchildsemi.com
August 1986
Revised March 2000
DM74LS151 1-of-8 Line Data Selector/Multiplexer
DM74LS151
1-of-8 Line Data Selector/Multiplexer
General Description
This data selector/multi plexer contains full on- chip decoding to select the desired data source. The DM74LS151
selects one-of-eight da ta sources. Th e DM74LS151 has a
strobe input which must be at a low logic le vel to enable
these devices. A high level at the stro be forces the W output HIGH, and the Y output LOW.
The DM74LS151 features complementary W and Y outputs.
Features
■ Select one-of-eight data lines
■ Performs parallel-to-serial conversion
■ Permits multiplexing from N lines to one line
■ Also for use as Boolean function generator
■ Typical average propagation delay time data input to
W output 12.5 ns
■ Typical power dissipation 30 mW
Ordering Code:
Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering code.
Connection Diagram Truth Table
H = HIGH Level
L = LOW Level
X = Don't Care
D0, D1...D7 = the level of the respective D input
Order Number Package Number Package Description
DM74LS151M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
DM74LS151SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
DM74LS151N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Inputs Outputs
Select Strobe
YW
CBAS
XXXHLH
LLLLD0D0
L L H L D1 D1
L H L L D2 D2
L H H L D3 D3
H L L L D4 D4
HLHLD5D5
H H L L D6 D6
HHHLD7D7
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DM74LS151
Logic Diagrams
See Address Buffer s
Address Buffers
3 www.fairchildsemi.com
DM74LS151
Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratings ” are those val ues beyond w hich
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 tables are not guaranteed at the absolute maximum ratings.
The “Recommend ed O peratin g Cond itions” t able w ill defin e the condition s
for actual device operation.
Recommended Operating Conditions
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 2: All typicals are at VCC = 5V, TA = 25°C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 4: I
CC
is measured with all out puts OPEN, strobe and data select inputs at 4. 5V, and all other inputs OPEN.
Supply Voltage 7V
Input Voltage 7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range −65°C to +150°C
Symbol Parameter Min Nom Max Units
V
CC
Supply Voltage 4.75 5 5.25 V
V
IH
HIGH Level Input Voltage 2 V
V
IL
LOW Level Input Voltage 0.8 V
I
OH
HIGH Level Output Current −0.4 mA
I
OL
LOW Level Output Current 8 mA
T
A
Free Air Operating Tempera ture 0 70 °C
Symbol Parameter Conditions Min
Typ
Max Units
(Note 2)
V
I
Input Clamp Voltage VCC = Min, II = −18 mA −1.5 V
V
OH
HIGH Level VCC = Min, IOH = Max
2.7 3.4 V
Output Voltage VIL = Max, VIH = Min
V
OL
LOW Level VCC = Min, IOL = Max
0.35 0.5
Output Voltage VIL = Max, VIH = Min V
IOL = 4 mA, VCC = Min 0.25 0.4
I
I
Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.1 mA
I
IH
HIGH Level Input Current VCC = Max, VI = 2.7V 20 µA
I
IL
LOW Level Input Current VCC = Max, VI = 0.4V −0.4 mA
I
OS
Short Circuit Output Current VCC = Max (Note 3) −20 −100 mA
I
CC
Supply Current VCC = Max (Note 4) 6 10 mA
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