MM74HC259MX

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Storage and Control
• Characteristics: High-Speed, 8-Bit Addressable Latch/Shift Register
• Package: 16-Pin SOIC (Small Outline Integrated Circuit)
• Essence: The MM74HC259MX is a versatile IC that combines the functionality of an 8-bit latch and a shift register. It can store and control data in various applications.
• Packaging/Quantity: Available in reels of 2500 units or tubes of 48 units.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Latch Enable Setup Time: 20 ns
• Shift Register Clock Pulse Width: 30 ns
• Output Current: ±25 mA
• Propagation Delay: 15 ns
• Latch-to-Latch Variation: ±5 ns

Pin Configuration

The MM74HC259MX has a total of 16 pins, each serving a specific function:

1. GND: Ground
2. QA: Output A
3. QB: Output B
4. QC: Output C
5. QD: Output D
6. QE: Output E
7. QF: Output F
8. QG: Output G
9. QH: Output H
10. VCC: Supply Voltage
11. SER: Serial Data Input
12. SRCLK: Shift Register Clock Input
13. RCLK: Register Clock Input
14. OE: Output Enable Input
15. MR: Master Reset Input
16. QH' / QH: Cascading Outputs

Functional Features

• Combines an 8-bit latch and a shift register in a single IC.
• Can be used as a parallel-to-serial converter or a serial-to-parallel converter.
• Allows cascading multiple MM74HC259MX ICs for expanded functionality.
• Supports both synchronous and asynchronous operations.
• High-speed operation with low power consumption.

Advantages and Disadvantages

Advantages: - Versatile functionality for data storage and control applications. - Compact size and easy integration into electronic circuits. - High-speed operation enables efficient data processing. - Low power consumption for energy-efficient designs.

Disadvantages: - Limited number of outputs (8 bits). - Requires external components for certain applications. - Sensitive to voltage fluctuations, requiring stable power supply.

Working Principles

The MM74HC259MX combines an 8-bit latch and a shift register. The latch stores data in parallel, while the shift register allows serial input and output. The IC can operate in two modes: latch mode and shift mode.

In latch mode, the inputs are latched and stored when the latch enable (LE) signal is high. The stored data appears at the outputs until a new set of data is latched.

In shift mode, the data is shifted through the register on each rising edge of the shift register clock (SRCLK) signal. The serial data input (SER) is shifted into the first flip-flop, and the data from each flip-flop is transferred to the next one.

Detailed Application Field Plans

The MM74HC259MX finds applications in various fields, including:

1. Digital Communication Systems
2. Data Storage Devices
3. Industrial Control Systems
4. Automotive Electronics
5. Consumer Electronics

In digital communication systems, the IC can be used for data buffering and synchronization. In data storage devices, it enables efficient data transfer between memory modules. Industrial control systems benefit from its ability to control multiple devices simultaneously. Automotive electronics utilize the IC for data processing and control. In consumer electronics, it can be used in remote controls, gaming consoles, and other devices requiring data storage and control.

Detailed and Complete Alternative Models

1. 74HC595: 8-Bit Serial-In, Parallel-Out Shift Register
2. CD4015: Dual 4-Stage Static Shift Register
3. SN74LS164: 8-Bit Serial-In, Parallel-Out Shift Register
4. CD4094: 8-Stage Shift-and-Store Bus Register
5. 74HC164: 8-Bit Serial-In, Parallel-Out Shift Register

These alternative models offer similar functionality to the MM74HC259MX and can be considered as alternatives based on specific requirements and compatibility with existing designs.

In conclusion, the MM74HC259MX is a versatile IC that combines an 8-bit latch and a shift register. It offers high-speed operation, compact size, and various applications in data storage and control. Its functional features, advantages, and disadvantages make it suitable for a wide range of electronic systems.