MC14585B: 4-Bit Magnitude Comparator

The MC14585B 4-Bit Magnitude Comparator is constructed with complementary MOS (CMOS) enhancement mode devices. The circuit has eight comparing inputs (A3, B3, A2, B2, A1, B1, A0, B0), three cascading inputs (A < B, A = B, and A > B), and three outputs (A < B, A = B, and A > B). This device compares two 4-bit words (A and B) and determines whether they are "less than", "equal to", or "greater than" by a high level on the appropriate output. For words greater than 4-bits, units can be cascaded by connecting outputs (A > B), (A < B), and (A = B) to the corresponding inputs of the next significant comparator. Inputs (A < B), (A = B), and (A > B) on the least significant (first) comparator are connected to a low, a high, and a low, respectively. Applications include logic in CPU's, correction and/or detection of instrumentation conditions, comparator in testers, converters, and controls.

Features
  • Diode Protection on All Inputs
  • Expandable
  • Applicable to Binary or 8421-BCD Code
  • Supply Voltage Range = 3.0 Vdc to 18 Vdc
  • Capable of Driving Two Low-power TTL Loads or One Low-power Schottky TTL Load over the Rated Temperature Range
  • Can be Cascaded - See Fig. 3
  • Pb-Free Packages are Available
Simulation Models (2)
Document TitleDocument ID/SizeRevisionRevision Date
IBIS Model for MC14585BCPMC14585BCP.IBS (5.0kB)0
IBIS Model for MC14585BDMC14585BD.IBS (5.0kB)0
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC 16 LEAD751B-05 (38.2kB)K
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
4-Bit Magnitude ComparatorMC14585B/D (99kB)9Jul, 2014
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC14585BDGActivePb-free Halide freeSOIC-16751B-051Tube48$0.2933
MC14585BDR2GActivePb-free Halide freeSOIC-16751B-051Tape and Reel2500$0.2933
NLV14585BDR2GActiveAEC Qualified PPAP Capable Pb-free Halide freeSOIC-16751B-051Tape and Reel2500$0.3227
Specifications
ProductTypeVCC Min (V)VCC Max (V)tpd Max (ns)PD Max (W)IO Max (mA)
MC14585BDGMagnitude Comparator3183600.52.25
MC14585BDR2GMagnitude Comparator3183600.52.25
NLV14585BDR2GMagnitude Comparator3183600.52.25
4-Bit Magnitude Comparator (99kB) MC14585B
IBIS Model for MC14585BCP MC14585B
IBIS Model for MC14585BD MC14585B
SOIC 16 LEAD MC14504B