SN74LS156 DEMULTIPLEXER Datasheet

SN74LS156 Datasheet, PDF, Equivalent


Part Number

SN74LS156

Description

DUAL 1-OF-4 DECODER/ DEMULTIPLEXER

Manufacture

ON Semiconductor

Total Page 4 Pages
Datasheet
Download SN74LS156 Datasheet


SN74LS156
SN74LS156
Dual 1-of-4 Decoder/
Demultiplexer
The SN74LS156 is a high speed Dual 1-of-4 Decoder/
Demultiplexer. This device has 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 LS156 is fabricated with the Schottky barrier diode process for
high speed and are completely compatible with all ON Semiconductor
TTL families.
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
GUARANTEED OPERATING RANGES
www.DataSheet4U.com
Symbol
Parameter
Min Typ Max Unit
VCC Supply Voltage
TA Operating Ambient
Temperature Range
4.75 5.0 5.25
V
0 25 70 °C
VOH Output Voltage – High
IOL Output Current – Low
5.5 V
8.0 mA
http://onsemi.com
LS156–OPEN–COLLECTOR
LOW POWER SCHOTTKY
16
1
PLASTIC
N SUFFIX
CASE 648
16
1
SOIC
D SUFFIX
CASE 751B
ORDERING INFORMATION
Device
Package
Shipping
SN74LS156N 16 Pin DIP 2000 Units/Box
SN74LS156D
16 Pin
2500/Tape & Reel
© Semiconductor Components Industries, LLC, 1999
December, 1999 – Rev. 0
110
Publication Order Number:
SN74LS156/D

SN74LS156
SN74LS156
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC Eb Eb A0 O3b O2b O1b O0b
16 15 14 13 12 11 10 9
NOTE:
The Flatpak version has the same
pinouts (Connection Diagram) as
the Dual In-Line Package.
1 2 3 4 56 78
Ea Ea A1 O3a O2a O1a O0a GND
PIN NAMES
A0, A1
Ea, Eb
Ea
O0 – O3
Address Inputs
Enable (Active LOW) Inputs
Enable (Active HIGH) Input
Active LOW Outputs
LOADING (Note a)
HIGH
LOW
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
5 U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 mA HIGH/1.6 mA LOW.
LOGIC SYMBOL
1 2 13 3 14 15
E
DECODER a
012
A0
A1
3
A0 E
A1 DECODER b
0 123
765 4
9 10 11 12
VCC = PIN 16
GND = PIN 8
http://onsemi.com
111


Features SN74LS156 Dual 1-of-4 Decoder/ Demultip lexer The SN74LS156 is a high speed Dua l 1-of-4 Decoder/ Demultiplexer. This d evice has two decoders with common 2-bi t Address inputs and separate gated Ena ble inputs. Decoder “a” has an Enab le gate with one active HIGH and one ac tive LOW input. Decoder “b” has two active LOW Enable inputs. If the Enabl e functions are satisfied, one output o f each decoder will be LOW as selected by the address inputs. The LS156 has op en collector outputs for wired-OR (DOT- AND) decoding and function generator ap plications. The LS156 is fabricated wit h the Schottky barrier diode process fo r high speed and are completely compati ble with all ON Semiconductor TTL famil ies. • Schottky Process for High Spee d • Multifunction Capability • Comm on Address Inputs • True or Complemen t Data Demultiplexing • Input Clamp D iodes Limit High Speed Termination Effe cts • ESD > 3500 Volts GUARANTEED OP ERATING RANGES www.DataSheet4U.com Symbol Parameter Min Typ .
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