Overview
The SN74HC259D, produced by Texas Instruments, is an 8-bit addressable latch integrated circuit. This device is designed for general-purpose storage applications in digital systems and offers multiple functional modes. It can operate as an addressable latch, a memory storage device, a 3-to-8 decoder, or a demultiplexer with active-high outputs. The SN74HC259D is versatile and can be used in various digital systems for tasks such as working registers, serial-holding registers, and decoding/demultiplexing operations.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2.0 | - | 6.0 | V |
| Output Drive Capability | - | - | ±5.2 | mA |
| Propagation Delay (tpd) | 14 | - | 26 | ns |
| Input Current | - | - | 1 | μA |
| Operating Temperature | -40 | - | 85 | °C |
| Package Types | - | - | SOIC, PDIP, SO, TSSOP, CDIP, LCCC | - |
Key Features
- Wide operating voltage range of 2 V to 6 V.
- High-current inverting outputs drive up to 10 LSTTL loads.
- Low power consumption, with a maximum ICC of 80 μA.
- Four distinct functional modes: addressable latch, memory, 3-to-8 decoding/demultiplexing, and clear.
- Serial-to-parallel conversion capability.
- Asynchronous parallel clear and enable input for easy expansion.
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V.
- Multiple package options including SOIC, PDIP, SO, TSSOP, CDIP, and LCCC.
Applications
- General-purpose storage applications in digital systems.
- 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 SN74HC259D?
The operating voltage range is from 2 V to 6 V).
- What are the different functional modes of the SN74HC259D?
The device has four distinct functional modes: addressable latch, memory, 3-to-8 decoding/demultiplexing, and clear).
- What is the maximum output drive capability of the SN74HC259D?
The maximum output drive capability is ±5.2 mA).
- What is the propagation delay (tpd) of the SN74HC259D?
The propagation delay ranges from 14 ns to 26 ns depending on the operating conditions).
- What types of packages are available for the SN74HC259D?
The device is available in SOIC, PDIP, SO, TSSOP, CDIP, and LCCC packages).
- Does the SN74HC259D have ESD protection?
- What is the operating temperature range of the SN74HC259D?
The operating temperature range is from -40°C to 85°C).
- Can the SN74HC259D be used as a decoder or demultiplexer?
- How does the SN74HC259D handle serial-to-parallel conversion?
- Is the SN74HC259D expandable for n-bit applications?
