MC74VHCT259ADTR2G

Latches Overview

The MC74VHCT259ADTR2G is an 8-bit addressable latch from the onsemi 74VHCT logic family, housed in a 16-TSSOP surface-mount package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a wide industrial temperature range from -55°C to +125°C. The device features non-inverting outputs with a propagation delay of 16 ns at 3.3 V and 10 ns at 5 V. Static current consumption is limited to 4 µA, while output drive capabilities include a low-level sink current of 32 mA and a high-level source current of -8 mA.

Latches Feature Summary

• Provides eight individually addressable data storage channels controlled by a single input line
• Ensures signal integrity through Schmitt-trigger action on address inputs for noise immunity
• Maintains low power consumption with minimal static current draw during operation

Latches Applications

• Data storage buffers in digital communication systems
• Address decoding circuits for memory mapping
• Parallel-to-serial conversion interfaces

Latches Procurement Notes

Verify the specific VHCT series designation to ensure compatibility with standard CMOS logic levels, as this variant differs from the standard VHC family. Confirm the TSSOP-16 package orientation and pinout against the official datasheet before integration. Ensure that the 4.5 V minimum operating voltage aligns with the target system's power supply rails to prevent functional failure.

Latches Selection Notes

Select this component when interfacing between standard CMOS logic and TTL-compatible systems requiring addressable latching. The VHCT series offers improved noise margins compared to basic HC variants. Consider the 16-TSSOP footprint for space-constrained designs. Evaluate the 32 mA sink capability against load requirements to determine if additional buffering is necessary for heavy capacitive loads.

Latches Part Context

This part belongs to the MC74VHCT259A series of 8-bit addressable latches manufactured by onsemi. It is designed for high-speed digital applications requiring reliable data retention and address selection. The device complements other logic components in complex integrated circuits, providing essential state-holding functionality in microprocessor-based systems.

Latches Replacement Considerations

The MC74VHCT259ADG is a tube-packaged equivalent from the same manufacturer. Verify pin compatibility and electrical specifications before substitution. Other manufacturers may offer functionally similar parts, but direct replacement requires confirmation of voltage ranges and package dimensions.