HCF4042BEY

Latches Overview

The HCF4042BEY is a monolithic integrated circuit containing four clocked D latch circuits, fabricated in Metal Oxide Semiconductor technology. It operates within a supply voltage range of 3V to 20V and supports an operating temperature from -55°C to +125°C. The device features balanced n- and p-channel output devices with complementary buffered outputs. Propagation delay times vary by voltage: DATA IN to Q ranges from 55ns to 300ns, while CLOCK to Q ranges from 80ns to 500ns across the specified voltage levels.

Latches Feature Summary

• Contains four latch circuits strobed by a common clock input
• Features configurable clock polarity control for data transfer timing
• Provides complementary buffered outputs with balanced impedance

Latches Applications

• Digital data storage applications requiring synchronized latching
• Timing control circuits utilizing programmable clock polarity
• Low power TTL compatible logic systems

Latches Procurement Notes

Verify component authenticity through official STMicroelectronics channels or authorized distributors. Confirm package type matches DIP-16 specifications. Check datasheet revisions for updated electrical characteristics. Ensure environmental compliance documentation aligns with project requirements. Validate ordering codes against current manufacturer catalogs.

Latches Selection Notes

Select this component when four synchronized latches are required with shared clocking. Consider the wide supply voltage range for flexible power designs. Evaluate propagation delays against system timing constraints. Verify temperature ratings match operational environments. Assess pin compatibility for existing PCB layouts.

Latches Part Context

This part belongs to the HCF4000B series of CMOS logic devices. It provides specific latching functionality distinct from counters or buffers within the same family. The BEY suffix indicates a plastic DIP-16 package configuration. It complements other logic elements for complex digital signal processing tasks.

Latches Replacement Considerations

HCF4042BM1 (SOP-16 package)

Latches FAQ

How does the POLARITY input affect data transfer?

When POLARITY is 0, data transfers during the low clock level. When POLARITY is 1, data transfers during the high clock level.

What is the maximum quiescent current specification?

The quiescent current is specified up to 20V, reaching a maximum of 600μA at 20V supply voltage.