MC74AC259MG

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic Device
• Characteristics:
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
• Package: Ceramic Dual In-Line Package (DIP)
• Essence: 8-bit Addressable Latch/Shift Register
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Input Voltage Range: 0V to VCC
• Operating Temperature Range: -55°C to +125°C
• Output Drive Capability: 10 LSTTL Loads
• Maximum Clock Frequency: 100 MHz

Detailed Pin Configuration

1. GND (Ground)
2. D0 (Data Input 0)
3. D1 (Data Input 1)
4. D2 (Data Input 2)
5. D3 (Data Input 3)
6. D4 (Data Input 4)
7. D5 (Data Input 5)
8. D6 (Data Input 6)
9. D7 (Data Input 7)
10. MR (Master Reset)
11. SH/LD (Shift/Load)
12. CLK (Clock)
13. QA (Output A)
14. QB (Output B)
15. QC (Output C)
16. QD (Output D)
17. QE (Output E)
18. QF (Output F)
19. QG (Output G)
20. QH (Output H)
21. VCC (Positive Power Supply)

Functional Features

• 8-bit addressable latch with serial input and parallel output
• Can be used as a shift register or storage register
• Supports both parallel and serial data transfer modes
• Master Reset (MR) input for clearing all outputs to logic low
• Shift/Load (SH/LD) input for selecting between shift and latch modes
• Clock (CLK) input for synchronizing data transfer

Advantages

• High-speed operation allows for efficient data processing
• Low power consumption helps in reducing energy usage
• Wide operating voltage range provides flexibility in various applications
• Versatile functionality as both a shift register and latch
• Compact DIP package ensures easy integration into circuit designs

Disadvantages

• Limited output drive capability may restrict use in certain applications requiring higher loads
• Maximum clock frequency of 100 MHz may not meet the requirements of some high-speed systems

Working Principles

The MC74AC259MG is an 8-bit addressable latch/shift register. It can store or shift data based on the selected mode. In latch mode, the inputs are latched and held at the outputs until a new set of data is loaded. In shift mode, the data is shifted through the register with each clock pulse.

Detailed Application Field Plans

The MC74AC259MG finds applications in various digital systems, including: - Data storage and retrieval systems - Serial-to-parallel or parallel-to-serial data conversion - Address decoding in microprocessors - Control signal generation in communication systems - LED matrix control in display panels

Detailed and Complete Alternative Models

1. SN74HC595N: 8-bit Shift Register with Output Latches
2. CD4015BE: Dual 4-stage Static Shift Register
3. 74HC164N: 8-bit Serial-In/Parallel-Out Shift Register
4. CD4094BE: 8-bit Shift Register with Output Latches
5. 74LS194AN: 4-bit Bidirectional Universal Shift Register

(Note: The above list is not exhaustive and serves as a reference for alternative models.)

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