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HD74LS85P

Renesas
Part Number HD74LS85P
Manufacturer Renesas
Description 4-bit Magnitude Comparator
Published Jul 25, 2021
Detailed Description HD74LS85 4-bit Magnitude Comparator REJ03D0421–0200 Rev.2.00 Feb.18.2005 This four bit magnitude comparator performs ...
Datasheet PDF File HD74LS85P PDF File

HD74LS85P
HD74LS85P


Overview
HD74LS85 4-bit Magnitude Comparator REJ03D0421–0200 Rev.
2.
00 Feb.
18.
2005 This four bit magnitude comparator performs comparison of straight binary and straight BCD (8-4-2-1) codes.
Three fully decoded decisions about two 4-bit words (A, B) are made and are externally available at three outputs.
This device is fully expandable to any number of bits without external gates.
Words of greater length may be compared by connecting comparators in cascade.
The A > B, A < B, and A = B outputs of a stage handling less-significant bits.
The stage handling the least- significant bits must have a high-level voltage applied to the A β B input.
The cascading path is implemented with only a two-gate-level delay to reduce overall comparison times for long words.
Features • Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation HD74LS85P DILP-16 pin PRDP0016AE-B P (DP-16FV) HD74LS85FPEL SOP-16 pin (JEITA) PRSP0016DH-B (FP-16DAV) FP Note: Please consult the sales office for the above package availability.
Taping Abbreviation (Quantity) — EL (2,000 pcs/reel) Pin Arrangement B3 Data Input 1 AB 4 A>B 5 Outputs A=B 6 AB A2 A>B A1 A=B Out B1 A2.
00, Feb.
18.
2005, page 1 of 6 HD74LS85 Function Table Inputs A3, B3 A2, B2 A1, B1 A0, B0 A3 > B3 X X X A3 < B3 X X X A3 = B3 A2 > B2 X X A3 = B3 A2 < B2 X X A3 = B3 A2 = B2 A1 > B1 X A3 = B3 A2 = B2 A1 < B1 X A3 = B3 A2 = B2 A1 = B1 A0 > B0 A3 = B3 A2 = B2 A1 = B1 A0 < B0 A3 = B3 A2 = B2 A1 = B1 A0 = B0 A3 = B3 A2 = B2 A1 = B1 A0 = B0 A3 = B3 A2 = B2 A1 = B1 A0 = B0 A3 = B3 A2 = B2 A1 = B1 A0 = B0 A3 = B3 A2 = B2 A1 = B1 A0 = B0 H; high level, L; low level, X; irrelevant Cascading Inputs A>B A

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