Overview
The CD4044BDWR is a quad cross-coupled 3-state CMOS NAND latch produced by Texas Instruments. This component is part of the CD4044B series, which is designed for use in negative logic systems. Each latch within the CD4044BDWR has a separate Q output and individual SET and RESET inputs. The Q outputs are controlled by a common ENABLE input, allowing for the latches to be connected or disconnected from the outputs based on the ENABLE state. This feature enables common busing of the outputs, making it versatile for various digital logic applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 16-lead Small-Outline Package (SOIC D, DWR, NSR suffixes) |
| Pins | 16 |
| Operating Temperature Range (°C) | -55 to 125 |
| Supply Voltage (V) | 5 V, 10 V, 15 V |
| Maximum Input Current | 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C |
| Noise Margin (V) | 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 |
| Package Quantity | Carrier 40, LARGE T&R (2500) |
| Eco Plan | Pb-Free (RoHS) |
Key Features
- 3-state outputs with common output ENABLE
- Separate SET and RESET inputs for each latch
- NOR and NAND configurations (CD4044B for negative logic systems)
- 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: 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
- Specifically designed for negative logic systems (CD4044B), while CD4043B is for positive logic systems
Q & A
- What is the CD4044BDWR?
The CD4044BDWR is a quad cross-coupled 3-state CMOS NAND latch produced by Texas Instruments.
- What are the key features of the CD4044BDWR?
Key features include 3-state outputs with common output ENABLE, separate SET and RESET inputs, and standardized symmetrical output characteristics.
- What are the operating temperature ranges for the CD4044BDWR?
The operating temperature range is -55°C to 125°C.
- What are the supply voltage ratings for the CD4044BDWR?
The component is rated for 5 V, 10 V, and 15 V supply voltages.
- What is the maximum input current for the CD4044BDWR?
The maximum input current is 1 µA at 18 V over the full package temperature range; 100 nA at 18 V and 25°C.
- What are the noise margins for the CD4044BDWR?
Noise margins are 1 V at VDD= 5 V, 2 V at VDD= 10 V, and 2.5 V at VDD= 15 V.
- What packaging options are available for the CD4044BDWR?
It is available in 16-lead small-outline packages (SOIC D, DWR, NSR suffixes) and other variants.
- What are the typical applications of the CD4044BDWR?
Typical applications include holding registers in multi-register systems, strobed registers, and general digital logic.
- Is the CD4044BDWR RoHS compliant?
- What is the significance of the ENABLE input in the CD4044BDWR?
The ENABLE input controls the connection of the latch states to the Q outputs, allowing for common busing of the outputs.
