Overview
The CD4043BDW is a quad cross-coupled 3-state CMOS NOR latch produced by Texas Instruments. This component is part of the CD4043B series, which is designed for use in positive logic systems. Each latch in the CD4043B has a separate Q output and individual SET and RESET inputs, with the Q outputs controlled by a common ENABLE input. This allows for flexible control over the latch states and enables common busing of the outputs.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (DW) |
| Pins | 16 |
| Operating Temperature Range (°C) | -55 to 125 |
| Package Quantity | 2000 (Tape and Reel) |
| Eco Plan | Green (RoHS & no Sb/Br) |
| Lead/Ball Finish | Cu NIPDAU |
| MSL Peak Temp (°C) | Level-1-260C-UNLIM |
| Noise Margin at VDD (V) | 1 V at 5 V, 2 V at 10 V, 2.5 V at 15 V |
| Maximum Input Current | 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C |
Key Features
- 3-state outputs with common output ENABLE
- Separate SET and RESET inputs for each latch
- NOR and NAND configurations (CD4043B for NOR, CD4044B for NAND)
- 5-V, 10-V, and 15-V parametric ratings
- Standardized symmetrical output characteristics
- 100% tested for quiescent current at 20 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 systems
- Four bits of independent storage with output ENABLE
- Strobed register
- General digital logic
- Positive logic systems (CD4043B), negative logic systems (CD4044B)
Q & A
- What is the CD4043BDW used for?
The CD4043BDW is used as a quad cross-coupled 3-state CMOS NOR latch, suitable for applications such as holding registers, strobed registers, and general digital logic.
- What are the key features of the CD4043BDW?
Key features include 3-state outputs, separate SET and RESET inputs, NOR configuration, and standardized symmetrical output characteristics.
- What are the operating temperature ranges for the CD4043BDW?
The operating temperature range is -55°C to 125°C.
- What types of packages are available for the CD4043B series?
The CD4043B series is available in various packages including SOIC (D, DW), PDIP, CDIP, and TSSOP.
- Is the CD4043BDW RoHS compliant?
- What is the maximum input current for the CD4043BDW?
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 is the noise margin for the CD4043BDW?
The noise margin is 1 V at VDD = 5 V, 2 V at VDD = 10 V, and 2.5 V at VDD = 15 V.
- Can the outputs of the CD4043BDW be bused together?
- Does the CD4043BDW meet any specific industry standards?
- What is the typical application for the CD4043B versus the CD4044B?
The CD4043B is used in positive logic systems, while the CD4044B is used in negative logic systems.
