DM74ALS74AN

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-speed, TTL Logic
• Package: DIP (Dual In-line Package)
• Essence: Digital Logic Component
• Packaging/Quantity: Tube, 25 pieces per tube

Specifications

• Technology: Advanced Low Power Schottky (ALS)
• Logic Family: TTL (Transistor-Transistor Logic)
• Number of Flip-Flops: 2
• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -55°C to +125°C
• Propagation Delay Time: 9 ns (typical)
• Output Current: ±8 mA
• Input Capacitance: 10 pF
• Pin Count: 14

Detailed Pin Configuration

1. CLR (Clear) - Active LOW input for resetting the flip-flop.
2. D (Data) - Data input for the flip-flop.
3. CLK (Clock) - Clock input for triggering the flip-flop.
4. PR (Preset) - Active LOW input for setting the flip-flop.
5. Q (Output) - Complementary output of the flip-flop.
6. Q̅ (Output) - Non-complementary output of the flip-flop.
7. GND (Ground) - Ground reference for the IC.
8. Q̅ (Output) - Non-complementary output of the flip-flop.
9. Q (Output) - Complementary output of the flip-flop.
10. VCC (Supply Voltage) - Positive supply voltage for the IC.
11. D (Data) - Data input for the flip-flop.
12. CLK (Clock) - Clock input for triggering the flip-flop.
13. PR (Preset) - Active LOW input for setting the flip-flop.
14. CLR (Clear) - Active LOW input for resetting the flip-flop.

Functional Features

• DM74ALS74AN is a dual D-type positive-edge-triggered flip-flop.
• It operates on TTL logic levels, making it compatible with other TTL devices.
• The flip-flop has separate data, clock, preset, and clear inputs for each flip-flop.
• It provides complementary outputs (Q and Q̅) for each flip-flop.
• The flip-flop can be used in various applications requiring sequential logic operations.

Advantages and Disadvantages

Advantages: - High-speed operation due to the ALS technology. - TTL compatibility allows easy integration with other TTL devices. - Dual flip-flop configuration provides flexibility in circuit design. - Compact DIP package enables easy prototyping and PCB layout.

Disadvantages: - Limited number of flip-flops per IC (2 in this case). - Requires external components for proper clocking and data handling. - Power consumption may be higher compared to newer technologies.

Working Principles

DM74ALS74AN utilizes positive-edge-triggered flip-flops to store and manipulate digital data. The flip-flop's state changes only when a rising edge is detected on the clock input. The data input determines the new state of the flip-flop, while the preset and clear inputs allow for additional control over the output. The complementary outputs provide both inverted and non-inverted versions of the stored data.

Detailed Application Field Plans

1. Digital Counters: DM74ALS74AN can be used as building blocks for designing synchronous counters, which are widely used in digital systems for counting and sequencing operations.
2. Shift Registers: By cascading multiple DM74ALS74AN flip-flops, shift registers can be created, enabling serial-to-parallel or parallel-to-serial data conversion.
3. Memory Units: The flip-flop's ability to store and retain data makes it suitable for memory applications, such as register files or temporary storage elements.

Detailed and Complete Alternative Models

1. SN74ALS74AN: Similar to DM74ALS74AN, but manufactured by Texas Instruments.
2. CD74ALS74AN: Another alternative from Texas Instruments with similar specifications.
3. MC74ALS74AN: An alternative model produced by ON Semiconductor.

These alternative models offer similar functionality and can be used interchangeably with DM74ALS74AN in most applications.

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