CD74HCT259MG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Storage and Control
• Characteristics: High-Speed, CMOS Logic, 8-Bit Addressable Latch
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: A versatile latch used for data storage and control in various electronic systems.
• Packaging/Quantity: Available in reels or tubes, typically sold in quantities of 250 or 1000 units.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 3.15V (minimum)
• Low-Level Input Voltage: 1.35V (maximum)
• High-Level Output Current: -4mA (maximum)
• Low-Level Output Current: 4mA (maximum)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HCT259MG4 has a total of 16 pins, each serving a specific function:

1. GND: Ground
2. QA: Output Q for Bit A
3. QB: Output Q for Bit B
4. QC: Output Q for Bit C
5. QD: Output Q for Bit D
6. QE: Output Q for Bit E
7. QF: Output Q for Bit F
8. QG: Output Q for Bit G
9. QH: Output Q for Bit H
10. MR: Master Reset
11. SH/LD: Shift/Load Control
12. CLK: Clock Input
13. A0: Address Input A0
14. A1: Address Input A1
15. A2: Address Input A2
16. VCC: Positive Power Supply

Functional Features

• 8-Bit Addressable Latch: Allows individual control over each bit for data storage and retrieval.
• Shift/Load Control: Enables shifting of data or loading new data into the latch.
• Master Reset: Resets all outputs to a low logic level when activated.
• High-Speed Operation: Suitable for applications requiring fast data processing.

Advantages and Disadvantages

Advantages: - Versatile and widely used in various electronic systems. - High-speed operation allows for efficient data handling. - Individual control over each bit provides flexibility in data storage and retrieval.

Disadvantages: - Limited output current capacity may restrict usage in certain applications. - Requires external clock signal for proper operation.

Working Principles

The CD74HCT259MG4 is an 8-bit addressable latch that can store and control data. It operates based on the clock input (CLK) and the shift/load control (SH/LD) signal. When the SH/LD signal is high, the data at the A0-A2 inputs is loaded into the latch. On the falling edge of the CLK signal, the data is transferred from the input to the corresponding output pins. The latch can be reset using the master reset (MR) input, which sets all outputs to a low logic level.

Detailed Application Field Plans

The CD74HCT259MG4 finds applications in various fields, including:

1. Data Storage Systems: Used for addressable data storage in memory devices.
2. Control Systems: Employed for controlling multiple devices or components based on stored data.
3. Communication Systems: Utilized for data routing and switching purposes.
4. Display Systems: Integrated into display drivers for controlling individual segments or pixels.
5. Industrial Automation: Incorporated in control circuits for process automation and monitoring.

Detailed and Complete Alternative Models

1. SN74HC259N: Similar 8-bit addressable latch with comparable specifications.
2. CD4014BE: 8-bit static shift register with parallel load capability.
3. 74HC595: 8-bit serial-in, serial or parallel-out shift register with output latches.

These alternative models offer similar functionality and can be considered as substitutes for the CD74HCT259MG4 in various applications.

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