DM7485 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – 4-Bit Magnitude Comparators

June 1989
5485 DM5485 DM7485
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 paths are implemented with only a two-gate-level
delay to reduce overall comparison times for long words
Features
Y _{Typical power dissipation 275 mW}
Y _{Typical delay (4-bit words) 23 ns}
Y _{Alternate Military Aerospace device (5485) is available}
Contact a National Semiconductor Sales Office Distrib-
utor for specifications
Connection Diagram
Dual-In-Line Package
TL F 6530 – 1
Order Number 5485DMQB 5485FMQB DM5485J DM5485W or DM7485N
See NS Package Number J16A N16E or W16A
C1995 National Semiconductor Corporation TL F 6530
RRD-B30M105 Printed in U S A