Overview
The Texas Instruments CD4043BE is a CMOS Quad NOR R/S Latch with 3-State Outputs. This integrated circuit is part of the CD4000 series and is designed for use in various digital logic applications. Each latch in the CD4043BE has a separate Q output and individual SET and RESET inputs, controlled by a common ENABLE input. This feature allows the outputs to be connected or disconnected, enabling common busing of the outputs. The device is available in a 16-pin dual-in-line plastic package (PDIP) and operates over a wide temperature range of -55°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | PDIP (N) |
| No. of Pins | 16 |
| No. of Bits | 4 |
| Operating Temperature Range | -55°C to 125°C |
| Minimum Supply Voltage (VCC) | 3 V |
| Maximum Supply Voltage (VCC) | 18 V |
| Propagation Delay at Nominal Supply | 140 ns |
| Output Drive (IOL/IOH) Max | 1.5/-1.5 mA |
| 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 |
Key Features
- 3-state outputs with common output ENABLE input
- Separate SET and RESET inputs for each latch
- NOR and NAND configurations
- 5-V, 10-V, and 15-V parametric ratings
- Standardized symmetrical output characteristics
- 100% tested for quiescent current at 20 V
- 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
Applications
- Holding register in multi-register system
- Four bits of independent storage with output ENABLE
- Strobed register
- General digital logic
- CD4043B for positive logic systems, CD4044B for negative logic systems
Q & A
- What is the CD4043BE? The CD4043BE is a CMOS Quad NOR R/S Latch with 3-State Outputs from Texas Instruments.
- What is the operating temperature range of the CD4043BE? The operating temperature range is -55°C to 125°C.
- How many bits does the CD4043BE have? The CD4043BE has 4 bits.
- What is the maximum supply voltage for the CD4043BE? The maximum supply voltage is 18 V.
- What is the propagation delay at nominal supply voltage? The propagation delay is 140 ns.
- What are the noise margins for different supply voltages? The noise margins are 1 V at VDD = 5 V, 2 V at VDD = 10 V, and 2.5 V at VDD = 15 V.
- Can the outputs be connected or disconnected? Yes, the outputs can be connected or disconnected using the common ENABLE input.
- What are some common applications of the CD4043BE? Common applications include holding registers, strobed registers, and general digital logic.
- What package types are available for the CD4043BE? The CD4043BE is available in a 16-pin dual-in-line plastic package (PDIP).
- Is the CD4043BE suitable for new designs? Yes, the CD4043BE is recommended for new designs and is listed as active by Texas Instruments.
