DataSheet.es    


PDF DM74LS85N Data sheet ( Hoja de datos )

Número de pieza DM74LS85N
Descripción 4-Bit Magnitude Comparators
Fabricantes National Semiconductor 
Logotipo National Semiconductor Logotipo



Hay una vista previa y un enlace de descarga de DM74LS85N (archivo pdf) en la parte inferior de esta página.


Total 8 Páginas

No Preview Available ! DM74LS85N Hoja de datos, Descripción, Manual

June 1989
54LS85 DM54LS85 DM74LS85
4-Bit Magnitude Comparators
General Description
These 4-bit magnitude comparators perform comparison of
straight binary or BCD codes Three fully-decoded decisions
about two 4-bit words (A B) are made and are externally
available at three outputs These devices are fully expand-
able to any number of bits without external gates Words of
greater length may be compared by connecting compara-
tors in cascade The A l B A k B and A e B outputs of a
stage handling less-significant bits are connected to the cor-
responding inputs of the next stage handling more-signifi-
cant bits The stage handling the least-significant bits must
have a high-level voltage applied to the A e B input The
cascading path is implemented with only a two-gate-level
delay to reduce overall comparison times for long words
Features
Y Typical power dissipation 52 mW
Y Typical delay (4-bit words) 24 ns
Y Alternate Military Aerospace device (54LS85) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
Order Number 54LS85DMQB
54LS85FMQB 54LS85LMQB
DM54LS85J DM54LS85W
DM74LS85M or DM74LS85N
See NS Package Number E20A
J16A M16A N16E or W16A
Function Table
Comparing
Inputs
A3 B3
A2 B2
A1 B1
A3 l B3
A3 k B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
A3 e B3
X
X
A2 l B2
A2 k B2
A2 e B2
A2 e B2
A2 e B2
A2 e B2
A2 e B2
A2 e B2
A2 e B2
A2 e B2
A2 e B2
A2 e B2
X
X
X
X
A1 l B1
A1 k B1
A1 e B1
A1 e B1
A1 e B1
A1 e B1
A1 e B1
A1 e B1
A1 e B1
A1 e B1
H e High Level L e Low Level X e Don’t Care
C1995 National Semiconductor Corporation TL F 6379
A0 B0
X
X
X
X
X
X
A0 l B0
A0 k B0
A0 e B0
A0 e B0
A0 e B0
A0 e B0
A0 e B0
A0 e B0
TL F 6379 – 1
Cascading
Inputs
AlB AkB AeB
XXX
XXX
XXX
XXX
XXX
XXX
XXX
XXX
HL L
LHL
LLH
XXH
HH L
LLL
Outputs
AlB
H
L
H
L
H
L
H
L
H
L
L
L
L
H
AkB
L
H
L
H
L
H
L
H
L
H
L
L
L
H
AeB
L
L
L
L
L
L
L
L
L
L
H
H
L
L
RRD-B30M105 Printed in U S A
www.DataSheet4U.com
www.DataSheet4U.com

1 page




DM74LS85N pdf
5

5 Page










PáginasTotal 8 Páginas
PDF Descargar[ Datasheet DM74LS85N.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
DM74LS854-Bit Magnitude ComparatorFairchild
Fairchild
DM74LS854-Bit Magnitude ComparatorsNational Semiconductor
National Semiconductor
DM74LS85N4-Bit Magnitude ComparatorsNational Semiconductor
National Semiconductor

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar