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CD4042BF
Texas Instruments
CMOS QUAD CLOCKED 'D' LATCH 16-C
1656 Pcs New Original In Stock
D-Type Transparent Latch 1 Channel 4:4 IC Complementary 16-CDIP
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5.0 / 5.0
- (519 Ratings)
CD4042BF
Product Overview
11238214
DiGi Electronics Part Number
CD4042BF-DGManufacturer
Texas Instruments
CD4042BF
Description
CMOS QUAD CLOCKED 'D' LATCH 16-CInventory
1656 Pcs New Original In Stock
D-Type Transparent Latch 1 Channel 4:4 IC Complementary 16-CDIP
Quantity
Minimum 1
Minimum 1
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CD4042BF Technical Specifications
Category
Logic, Latches
Packaging
-
Series
4000B
Product Status
Active
Logic Type
D-Type Transparent Latch
Circuit
4:4
Output Type
Complementary
Voltage - Supply
3V ~ 18V
Independent Circuits
1
Delay Time - Propagation
40ns
Current - Output High, Low
6.8mA, 6.8mA
Operating Temperature
-55°C ~ 125°C
Mounting Type
Through Hole
Package / Case
16-CDIP (0.300", 7.62mm)
Supplier Device Package
16-CDIP
Datasheet & Documents
HTML Datasheet
CD4042BF-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
Not Applicable
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-CD4042BF
Standard Package
1
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Excellent attention to detail and high standards in their offerings.
de desembre 02, 2025
The support team is knowledgeable and kind, making every issue easy to resolve.
de desembre 02, 2025
DiGi Electronics always ensures fast delivery, and their sturdy products are built for serious use.
de desembre 02, 2025
I found their customer service to be consistently reliable, offering quick and accurate assistance.
de desembre 02, 2025
Their low prices and rapid delivery consistently exceed my expectations.
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Frequently Asked Questions (FAQ)
When designing in the CD4042BF for a high-reliability industrial control system, how do I mitigate risks related to its propagation delay variability over temperature and supply voltage?
The CD4042BF exhibits a propagation delay of up to 40ns under load, but this can increase significantly at lower supply voltages and temperature extremes. To ensure timing integrity in critical applications, always design with margin—assume delays up to 1.5x the datasheet max (60ns) in worst-case conditions. Use stable, regulated supplies near the 5V or 12V rails where timing is more predictable, and avoid operating near the 3V minimum if synchronization is critical. Consider adding debounced clocks and validating latch behavior across your full operating range using oscilloscope probing of setup/hold conditions.
Can the CD4042BF directly replace a 74HC373 in a legacy data bus latch circuit, and what are the key interface compatibility risks?
Replacing a 74HC373 with the CD4042BF requires caution due to key differences: the CD4042BF is polarity-sensitive with clock-level gating (transparent latch), while the 74HC373 uses edge-triggered latching. This means the CD4042BF output follows the input while the clock is high, which can cause unintended data leakage in edge-sensitive systems. Additionally, the 74HC373 has higher drive strength (typically 4mA/4mA at 5V) and faster speed. If substituting, redesign the clock logic to ensure it stays low during data transitions and verify output loading compatibility, especially for bus-driven signals.
How does the CD4042BF handle noise immunity in electrically noisy environments, and what design practices should be followed to ensure reliable operation?
The CD4042BF, being part of the 4000B series, has relatively low noise immunity compared to 74-series HC/HCT logic, particularly at lower supply voltages. To improve robustness in noisy environments, always decouple the VDD pin with a 100nF ceramic capacitor placed as close as possible to the device. Use pull-up or pull-down resistors on control lines (like CLOCK or POLARITY CONTROL) to prevent floating inputs. Avoid routing sensitive inputs near high-current switching nodes, and consider adding Schmitt-trigger buffers (e.g., 74HC14) on clock lines in EMI-prone systems to ensure clean edges.
What are the risks of using the CD4042BF's complementary outputs in single-ended applications, and how should unused outputs be managed?
While the CD4042BF provides complementary outputs (Q and /Q), using only one output without properly managing the other can lead to increased EMI or crosstalk due to internal switching. Do not leave complementary outputs floating—they are actively driven. If only one side is needed, connect the unused output through a small resistor (e.g., 100Ω) to GND or use it to monitor state in diagnostic circuits. Also, ensure that trace lengths are matched if both outputs drive PCB lines to minimize skew-induced noise coupling.
Is the CD4042BF suitable for battery-powered wearable devices operating at 3.3V, and how does its leakage current affect long-term power efficiency?
The CD4042BF can operate at 3.3V, making it technically suitable for 3.3V battery systems, but its CMOS leakage in the 4000B series can be higher than modern low-power alternatives, especially at elevated temperatures. At 25°C, quiescent current is typically in the µA range, but it can increase exponentially above 85°C. For long-life battery designs, consider newer alternatives like the SN74LVC1G374 (single D-flip-flop) with nano-power standby. If using the CD4042BF, minimize clock activity during sleep modes and verify actual supply current in-circuit, as parasitic loads can degrade efficiency.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
CD4042BF CAD Models
Texas Instruments CD4042BF PCB symbols & footprints
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