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PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOP (NS) 16 79.56 mm² 10.2 x 7.8 TSSOP (PW) 16 32 mm² 5 x 6.4
  • Expansion to 8, 12, 16.....4N bits by cascading units
  • Medium-speed operation:
    compares two 4-bit words in 180 ns (typ.) at 10 V
  • 100% tested for quiescent current at 20 V
  • Standardized symmetrical output characteristics
  • 5-V, 10-V, and 15-V parametric ratings
  • Maximum input current of 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C
  • Noise margin (full package temperature range) =
       1 V at VDD = 5 V
       2 V at VDD = 10 V
       2.5 V at VDD = 15 V
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
  • Applications:
    • Servo motor controls
    • Process controllers

  • Expansion to 8, 12, 16.....4N bits by cascading units
  • Medium-speed operation:
    compares two 4-bit words in 180 ns (typ.) at 10 V
  • 100% tested for quiescent current at 20 V
  • Standardized symmetrical output characteristics
  • 5-V, 10-V, and 15-V parametric ratings
  • Maximum input current of 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C
  • Noise margin (full package temperature range) =
       1 V at VDD = 5 V
       2 V at VDD = 10 V
       2.5 V at VDD = 15 V
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
  • Applications:
    • Servo motor controls
    • Process controllers

CD4585B is a 4-bit magnitude comparator designed for use in computer and logic applications that require the comparison of two 4-bit words. This logic circuit determines whether one 4-bit word (Binary or BCD) is "less than", "equal to", or "greater than" a second 4-bit word.

The CD4585B has eight comparing inputs (A3, B3, through A0, B0), three outputs (A<B,A = B,A>B) and three cascading inputs (A<B,A=B,A>B) that permit systems designers to expand the comparator function to 8, 12, 16.....4N bits. When a single CD4585B is used, the cascading inputs are connected as follows: (A<B) = low, (A=B) = high, (A>B) = high.

Cascading these units for comparison of more than 4 bits is accomplished as shown in Fig. 13.

The CD4585B types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (NSR suffix), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

CD4585B is a 4-bit magnitude comparator designed for use in computer and logic applications that require the comparison of two 4-bit words. This logic circuit determines whether one 4-bit word (Binary or BCD) is "less than", "equal to", or "greater than" a second 4-bit word.

The CD4585B has eight comparing inputs (A3, B3, through A0, B0), three outputs (A<B,A = B,A>B) and three cascading inputs (A<B,A=B,A>B) that permit systems designers to expand the comparator function to 8, 12, 16.....4N bits. When a single CD4585B is used, the cascading inputs are connected as follows: (A<B) = low, (A=B) = high, (A>B) = high.

Cascading these units for comparison of more than 4 bits is accomplished as shown in Fig. 13.

The CD4585B types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (NSR suffix), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

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Other devices and data sheet

This data sheet applies to both  CD4585B and  CD4585B-MIL

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Technical documentation

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Type Title Date
* Data sheet CD4585B TYPES datasheet (Rev. B) 27 Jun 2003
* SMD CD4585B SMD 7703702EA 21 Jun 2016
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
User guide Signal Switch Data Book (Rev. A) 14 Nov 2003
Application note Understanding Buffered and Unbuffered CD4xxxB Series Device Characteristics 03 Dec 2001

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

14-24-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin D, DB, DGV, DW, DYY, NS and PW packages

The 14-24-LOGIC-EVM evaluation module (EVM) is designed to support any logic device that is in a 14-pin to 24-pin D, DW, DB, NS, PW, DYY or DGV package,

User guide: PDF | HTML
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Package Pins Download
PDIP (N) 16 View options
SOP (NS) 16 View options
TSSOP (PW) 16 View options

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