DM74LS155 Fairchild Semiconductor, DM74LS155 Datasheet

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DM74LS155

Manufacturer Part Number
DM74LS155
Description
Dual 2-Line to 4-Line Decoders/Demultiplexers
Manufacturer
Fairchild Semiconductor
Datasheet
© 2000 Fairchild Semiconductor Corporation
DM74LS155M
DM74LS155N
DM74LS156M
DM74LS156N
DM74LS155 • DM74LS156
Dual 2-Line to 4-Line Decoders/Demultiplexers
General Description
These TTL circuits feature dual 1-line-to-4-line demultiplex-
ers with individual strobes and common binary-address
inputs in a single 16-pin package. When both sections are
enabled by the strobes, the common address inputs
sequentially select and route associated input data to the
appropriate output of each section. The individual strobes
permit activating or inhibiting each of the 4-bit sections as
desired. Data applied to input C1 is inverted at its outputs
and data applied at C2 is true through its outputs. The
inverter following the C1 data input permits use as a 3-to-8-
line decoder, or 1-to-8-line demultiplexer, without external
gating. Input clamping diodes are provided on these cir-
cuits to minimize transmission-line effects and simplify sys-
tem design.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Order Number
Package Number
M16A
M16A
N16E
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS006395
Features
Applications:
Individual strobes simplify cascading for decoding or
demultiplexing larger words
Input clamping diodes simplify system design
Choice of outputs:
Dual 2-to-4-line decoder
Dual 1-to-4-line demultiplexer
3-to-8-line decoder
1-to-8-line demultiplexer
Totem-pole (DM74LS155)
Open-collector (DM74LS156)
Package Description
August 1986
Revised April 2000
www.fairchildsemi.com

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DM74LS155 Summary of contents

Page 1

... DM74LS155 • DM74LS156 Dual 2-Line to 4-Line Decoders/Demultiplexers General Description These TTL circuits feature dual 1-line-to-4-line demultiplex- ers with individual strobes and common binary-address inputs in a single 16-pin package. When both sections are enabled by the strobes, the common address inputs sequentially select and route associated input data to the appropriate output of each section ...

Page 2

Function Tables 3-Line-to-8-Line Decoder or 1-Line-to-8-Line Demultiplexer Inputs Strobe Select Or Data C (Note (Note ...

Page 3

... Absolute Maximum Ratings Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range DM74LS155 Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V HIGH Level Input Voltage IH V LOW Level Input Voltage IL V HIGH Level Output Current OH I LOW Level Output Current ...

Page 4

DM74LS156 Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V HIGH Level Input Voltage IH V LOW Level Input Voltage IL V HIGH Level Output Voltage OH I LOW Level Output Current OL T Free Air Operating Temperature A ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow Package Number M16A 5 www.fairchildsemi.com ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...

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