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SN74LS156

Description
LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16
Categorysemiconductor    logic   
File Size114KB,6 Pages
ManufacturerMotorola ( NXP )
Websitehttps://www.nxp.com
Download Datasheet Parametric Compare View All

SN74LS156 Overview

LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16

SN74LS156 Parametric

Parameter NameAttribute value
Number of functions2
Number of terminals16
Maximum operating temperature70 Cel
Minimum operating temperature0.0 Cel
Maximum supply/operating voltage5.25 V
Minimum supply/operating voltage4.75 V
Rated supply voltage5 V
Processing package descriptionROHS COMPLIANT, Plastic, DIP-16
Lead-freeYes
EU RoHS regulationsYes
China RoHS regulationsYes
stateACTIVE
CraftsmanshipTTL
packaging shapeRectangle
Package SizeIN-line
Terminal formTHROUGH-hole
Terminal spacing2.54 mm
terminal coatingNickel Palladium
Terminal locationpair
Packaging MaterialsPlastic/Epoxy
Temperature levelCOMMERCIAL
seriesLS
Output characteristicsO-COL
Enter conditionsstandard
Logic IC typeOther codecs/drivers
Output polarityINVERTED
propagation delay TPD51 ns
DUAL 1-OF-4 DECODER/
DEMULTIPLEXER
The SN54 / 74LS155 and SN54 / 74LS156 are high speed Dual 1-of-4
Decoder/Demultiplexers. These devices have two decoders with common
2-bit Address inputs and separate gated Enable inputs. Decoder “a” has an
Enable gate with one active HIGH and one active LOW input. Decoder “b” has
two active LOW Enable inputs. If the Enable functions are satisfied, one
output of each decoder will be LOW as selected by the address inputs. The
LS156 has open collector outputs for wired-OR (DOT-AND) decoding and
function generator applications.
The LS155 and LS156 are fabricated with the Schottky barrier diode
process for high speed and are completely compatible with all Motorola TTL
families.
SN54/74LS155
SN54/74LS156
DUAL 1-OF-4 DECODER/
DEMULTIPLEXER
LS156-OPEN-COLLECTOR
LOW POWER SCHOTTKY
Schottky Process for High Speed
Multifunction Capability
Common Address Inputs
True or Complement Data Demultiplexing
Input Clamp Diodes Limit High Speed Termination Effects
ESD > 3500 Volts
J SUFFIX
CERAMIC
CASE 620-09
16
1
16
N SUFFIX
PLASTIC
CASE 648-08
1
CONNECTION DIAGRAM DIP
(TOP VIEW)
VCC
16
Eb
15
Eb
14
A0
13
O3b
12
O2b
11
O1b
10
O0b
9
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
1
Ea
2
Ea
3
A1
4
O3a
5
O2a
6
O1a
7
O0a
8
GND
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
PIN NAMES
A0, A1
Ea, Eb
Ea
O0 – O3
Address Inputs
Enable (Active LOW) Inputs
Enable (Active HIGH) Input
Active LOW Outputs (Note b)
LOADING
(Note a)
HIGH
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
LOW
0.25 U.L.
0.25 U.L.
0.25 U.L.
5 (2.5) U.L.
0
1
1 2
13 3
14 15
E
DECODER a
2
3
A0
A1
A0
A1
0
E
DECODER b
1
2
3
NOTES:
a) 1 TTL Unit Load (U.L.) = 40
µA
HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
Temperature Ranges. The HIGH level drive for the LS156 must be established by an external
resistor.
7
6
5
4
9
VCC = PIN 16
GND = PIN 8
10 11 12
FAST AND LS TTL DATA
5-262

SN74LS156 Related Products

SN74LS156 SN54LS156 SN54LS155
Description LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16 LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16 LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16
Number of functions 2 2 2
Number of terminals 16 16 16
Maximum operating temperature 70 Cel 70 Cel 70 Cel
Minimum operating temperature 0.0 Cel 0.0 Cel 0.0 Cel
Maximum supply/operating voltage 5.25 V 5.25 V 5.25 V
Minimum supply/operating voltage 4.75 V 4.75 V 4.75 V
Rated supply voltage 5 V 5 V 5 V
Processing package description ROHS COMPLIANT, Plastic, DIP-16 ROHS COMPLIANT, Plastic, DIP-16 ROHS COMPLIANT, Plastic, DIP-16
Lead-free Yes Yes Yes
EU RoHS regulations Yes Yes Yes
China RoHS regulations Yes Yes Yes
state ACTIVE ACTIVE ACTIVE
Craftsmanship TTL TTL TTL
packaging shape Rectangle Rectangle Rectangle
Package Size IN-line IN-line IN-line
Terminal form THROUGH-hole THROUGH-hole THROUGH-hole
Terminal spacing 2.54 mm 2.54 mm 2.54 mm
terminal coating Nickel Palladium Nickel Palladium Nickel Palladium
Terminal location pair pair pair
Packaging Materials Plastic/Epoxy Plastic/Epoxy Plastic/Epoxy
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL
series LS LS LS
Output characteristics O-COL O-COL O-COL
Enter conditions standard standard standard
Logic IC type Other codecs/drivers Other codecs/drivers Other codecs/drivers
Output polarity INVERTED INVERTED INVERTED
propagation delay TPD 51 ns 51 ns 51 ns
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