Overview
The SN74HC259DT, produced by Texas Instruments, is an 8-bit addressable latch designed for general-purpose storage applications in digital systems. This device is part of the 74HC series and is known for its multifunctional capabilities, including working as a storage register, serial-holding register, and as an active-high decoder or demultiplexer.
It features a wide operating voltage range of 2 V to 6 V, making it versatile for various digital system requirements. The SN74HC259DT is available in several package types, including the 16-SOIC package, which is surface-mountable and compact.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| Operating Temperature | -40 | 85 | °C | |
| Input Current | 1 | μA | ||
| Output Current (High/Low) | 5.2 | mA | ||
| Propagation Delay Time | 13 | ns | ||
| Power Dissipation Capacitance per Latch | 33 | pF |
Key Features
- Wide operating voltage range of 2 V to 6 V.
- High-current inverting outputs capable of driving up to 10 LSTTL loads.
- Low power consumption with a maximum ICC of 80 μA.
- Typical propagation delay time of 14 ns.
- ±4-mA output drive at 5 V.
- Low input current of 1 μA max.
- 8-bit parallel-out storage register with serial-to-parallel conversion and storage capabilities.
- Asynchronous parallel clear and active-high decoder.
- Enable input for simplifying expansion and four distinct functional modes.
Applications
The SN74HC259DT is designed for various applications in digital systems, including:
- General-purpose storage applications.
- Working registers and serial-holding registers.
- Active-high decoders or demultiplexers.
- Expandable for n-bit applications.
Q & A
- What is the operating voltage range of the SN74HC259DT?
The operating voltage range is from 2 V to 6 V.
- What is the maximum propagation delay time of the SN74HC259DT?
The typical propagation delay time is around 14 ns, but it can vary based on the specific conditions.
- What are the key applications of the SN74HC259DT?
Key applications include general-purpose storage, working registers, serial-holding registers, and as active-high decoders or demultiplexers.
- What is the maximum output current of the SN74HC259DT?
The maximum output current is 5.2 mA for both high and low outputs.
- What is the power consumption of the SN74HC259DT?
The maximum power consumption (ICC) is 80 μA.
- What are the package options available for the SN74HC259DT?
The device is available in several packages, including 16-SOIC, PDIP, SOP, TSSOP, CDIP, and LCCC.
- Can the SN74HC259DT be used in high-temperature environments?
Yes, it can operate in temperatures ranging from -40°C to 85°C.
- How many addressable latches does the SN74HC259DT have?
The device has 8 addressable latches.
- What is the input current requirement for the SN74HC259DT?
The input current is typically 1 μA max.
- Is the SN74HC259DT expandable for n-bit applications?
Yes, it is expandable for n-bit applications.
