CD4044 Quad 3-state NAND R-S Latch Tri-state


CD4044 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD4044 has Quad 3-state NAND R-S Latch Tri-state

CD4044 has a supply voltage range of 5V to 20V, which is much higher than any contemporary logic family. It has buffered output which improves transfer characteristics by providing very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.

CD4044 Features

  • High Voltage Types (20V Rating)
  • Quad NOR R/S Latch- CD4043BMS
  • Quad NAND R/S Latch – CD4044BMS
  • 3 State Outputs with Common Output ENABLE
  • Separate SET and RESET Inputs for Each Latch
  • NOR and NAND Configuration
  • 5V, 10V and 15V Parametric Ratings
  • Standardized Symmetrical Output Characteristics
  • 100% Tested for Quiescent Current at 20V
  • Maximum Input Current of 1µa at 18V Over Full Package-Temperature Range;
    • 100nA at 18V and 25oC
  • Noise Margin (Over Full Package Temperature Range):
    • 1V at VDD = 5V
    • 2V at VDD = 10V
    • 2.5V at VDD = 15

CD4044 Specifications

Absolute Maximum Ratings

  • DC Supply Voltage Range, (VDD): -0.5V to +20V (Voltage Referenced to VSS Terminals)
  • Input Voltage Range, All Inputs: -0.5V to VDD +0.5V
  • DC Input Current, Any One Input: ±10mA
  • Operating Temperature Range: -55oC to +125oC Package Types D, F, K, H
  • Storage Temperature Range (TSTG): -65oC to +150oC
  • Lead Temperature (During Soldering): +265oC
    • At Distance 1/16 ± 1/32 Inch (1.59mm ± 0.79mm) from case for 10s Maximum

CD4044 Pinout Diagram

CD4044 Pin Description

Pin NoPin NameDescription
1Q4R-S Latch Output 4
2NC Not Connected
3S1Set 1
5ENABLEEnable Pin
6R2Reset 2
7S2Set 2
8VSSSupply Voltage
9Q2 R-S Latch Output 2
10Q3 R-S Latch Output 3
11S3Set 3
12R3Reset 3
13Q1 R-S Latch Output 1
14R4Reset 4
15S4Set 4
16VDDDrain Voltage

CD4044 Circuit


  • Holding Register in Multi-Register System
  • Four Bits of Independent Storage with Output ENABLE
  • Strobed Register
  • General Digital Logic
  • CD4043BMS for Positive Logic Systems
  • CD4044BMS for Negative Logic System

CD4044 Alternative Equivalent

Download CD4044 Quad 3-state NAND R-S Latch Tri-state Datasheet from the link given below.