Overview
The CD4044BDR is a quad cross-coupled 3-state CMOS NAND latch produced by Texas Instruments. This integrated circuit is part of the CD4044B series, which is designed for use in digital logic systems. Each latch in the CD4044BDR has a separate Q output and individual SET and RESET inputs, controlled by a common ENABLE input. This allows for flexible and efficient management of digital signals in various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (D) |
| Pins | 16 |
| Operating Temperature Range (°C) | -55 to 125 |
| Voltage Nodes (V) | 5, 10, 15 |
| Maximum Input Current | 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C |
| Noise Margin | 1 V at VDD = 5 V, 2 V at VDD = 10 V, 2.5 V at VDD = 15 V |
| Quiescent Current Test | 100% tested at 20 V |
Key Features
- 3-state outputs with common output ENABLE
- Separate SET and RESET inputs for each latch
- NOR and NAND configurations (CD4044B is for negative logic systems)
- 5-V, 10-V, and 15-V parametric ratings
- Standardized symmetrical output characteristics
- Maximum input current of 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C
- Noise margin (over 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
- Holding register in multi-register system
- Four bits of independent storage with output ENABLE
- Strobed register
- General digital logic
- CD4044B for negative logic systems
Q & A
- What is the CD4044BDR?
The CD4044BDR is a quad cross-coupled 3-state CMOS NAND latch produced by Texas Instruments. - What are the key features of the CD4044BDR?
Key features include 3-state outputs, separate SET and RESET inputs, NOR and NAND configurations, and standardized symmetrical output characteristics. - What are the operating temperature and voltage ranges for the CD4044BDR?
The operating temperature range is -55 to 125°C, and the voltage nodes are 5 V, 10 V, and 15 V. - What is the maximum input current for the CD4044BDR?
The maximum input current is 1 µA at 18 V over the full package temperature range and 100 nA at 18 V and 25°C. - What are the noise margins for the CD4044BDR?
The noise margins are 1 V at VDD = 5 V, 2 V at VDD = 10 V, and 2.5 V at VDD = 15 V. - What are the common applications of the CD4044BDR?
Common applications include holding registers in multi-register systems, four bits of independent storage with output ENABLE, strobed registers, and general digital logic. - What package types are available for the CD4044BDR?
The CD4044BDR is available in 16-lead SOIC (D), PDIP (N), CDIP (J), SOP (NS), and TSSOP (PW) packages. - Is the CD4044BDR RoHS compliant?
Yes, the CD4044BDR is RoHS compliant. - What is the significance of the ENABLE input in the CD4044BDR?
The ENABLE input controls the connection of the latch states to the Q outputs. A logic '1' or high connects the latch states, while a logic '0' or low disconnects them, resulting in an open circuit condition. - Does the CD4044BDR meet any specific industry standards?
Yes, it meets all requirements of JEDEC Tentative Standard No. 13B, 'Standard Specifications for Description of 'B' Series CMOS Devices'.
