Overview
The 74HC259D is an 8-bit addressable latch produced by Toshiba Semiconductor and Storage. This device is part of the 74HC series, known for its high-speed Si-gate CMOS technology and compatibility with low power Schottky TTL (LSTTL). The 74HC259D operates in four distinct modes: addressable latch, memory, decoding/demultiplexing, and reset. It allows for the storage and retrieval of data in a flexible and addressable manner, making it versatile for various digital circuit applications.
Key Specifications
| Parameter | Value |
|---|---|
| Type | 8-bit Addressable Latch |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C |
| Supply Voltage | 2 V ~ 6 V |
| Propagation Delay | 22 ns |
| Output Current (High/Low) | 5.2 mA / 5.2 mA |
| RoHS Status | RoHS Compliant |
| ESD Protection | HBM: >2000 V, MM: >200 V, CDM: >1000 V |
Key Features
- Combined demultiplexer and 8-bit latch
- Serial to parallel capability
- Output of each available storage bit
- Random (addressable) data input
- Easy to expand
- Common reset input
- Can be used as 3 to 8 active HIGH decoder
- Complies with JEDEC standard number JESD7A
- Input level: CMOS level
- Multiple package options
Applications
The 74HC259D is suitable for a variety of digital circuit applications, including but not limited to:
- Memory and data storage systems
- Decoding and demultiplexing circuits
- Addressable data input systems
- Digital logic circuits requiring flexible data storage and retrieval
- Embedded systems and microcontrollers
Q & A
- What is the primary function of the 74HC259D?
The primary function of the 74HC259D is to act as an 8-bit addressable latch, allowing for the storage and retrieval of data in a flexible and addressable manner. - What are the operating voltage ranges for the 74HC259D?
The operating voltage range for the 74HC259D is from 2 V to 6 V. - What is the propagation delay of the 74HC259D?
The propagation delay of the 74HC259D is 22 ns. - Is the 74HC259D RoHS compliant?
Yes, the 74HC259D is RoHS compliant. - What are the ESD protection levels for the 74HC259D?
The 74HC259D has ESD protection levels of HBM: >2000 V, MM: >200 V, and CDM: >1000 V. - What are the common applications of the 74HC259D?
The 74HC259D is commonly used in memory and data storage systems, decoding and demultiplexing circuits, addressable data input systems, and digital logic circuits. - Can the 74HC259D be used as a decoder?
Yes, the 74HC259D can be used as a 3 to 8 active HIGH decoder. - What is the package type of the 74HC259D?
The package type of the 74HC259D is 16-SOIC (0.154", 3.90mm Width). - What is the operating temperature range for the 74HC259D?
The operating temperature range for the 74HC259D is from -40°C to 125°C. - Does the 74HC259D have input clamping diodes?
Yes, the 74HC259D includes input clamping diodes to protect against voltage exceeding VCC.
