MM74HC573N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Octal D-type transparent latch with 3-state outputs
• Characteristics: High-speed, low-power consumption, compatible with TTL and CMOS logic levels
• Package: DIP (Dual In-line Package)
• Essence: The MM74HC573N is a latch that can store and output data in an 8-bit format. It is commonly used in digital systems for temporary storage and data transfer.
• Packaging/Quantity: Available in tubes or reels, with 25 pieces per tube/reel.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -40°C to +85°C
• Propagation Delay Time: 13 ns (typical)
• Output Current: ±25 mA

Pin Configuration

The MM74HC573N has a total of 20 pins, which are divided into two rows of 10 pins each. The pin configuration is as follows:

+---+--+---+ OE1 |1 +--+ 20| VCC D0 |2 19| Q7 D1 |3 18| Q6 D2 |4 17| Q5 D3 |5 16| Q4 D4 |6 15| Q3 D5 |7 14| Q2 D6 |8 13| Q1 D7 |9 12| Q0 GND |10 11| LE +----------+

Functional Features

• Octal D-type transparent latch with 3-state outputs
• Latch enable (LE) input for data storage
• Output enable (OE1) input for controlling the output state
• High-speed operation, suitable for time-critical applications
• Low power consumption, making it energy-efficient
• Compatible with both TTL and CMOS logic levels
• 3-state outputs allow multiple devices to share a common bus

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - Low power consumption reduces energy usage - Compatibility with TTL and CMOS logic levels allows for easy integration into existing systems - 3-state outputs provide flexibility in sharing data buses

Disadvantages: - Limited number of latch outputs (8 bits) - Requires external control signals (LE and OE1) for proper operation

Working Principles

The MM74HC573N operates as an octal D-type transparent latch. When the latch enable (LE) input is high, the data inputs (D0-D7) are transferred to the latch outputs (Q0-Q7). The output enable (OE1) input controls whether the latch outputs are in a high-impedance state or actively driving the output lines.

The latch stores the data until a new set of inputs is provided or the latch enable input changes. The output enable input allows the outputs to be disconnected from the system when not needed, reducing power consumption and preventing conflicts on shared data buses.

Detailed Application Field Plans

The MM74HC573N can be used in various digital systems where temporary storage and data transfer are required. Some specific application fields include:

1. Microcontrollers and microprocessors
2. Data communication systems
3. Memory interfacing
4. Industrial automation
5. Automotive electronics
6. Robotics
7. Gaming consoles
8. Instrumentation and measurement devices

Detailed and Complete Alternative Models

1. SN74HC573N: Similar octal D-type transparent latch with 3-state outputs, offered by Texas Instruments.
2. CD74HC573E: Octal transparent latch with 3-state outputs, available from ON Semiconductor.
3. 74HCT573N: Octal D-type latch with 3-state outputs, provided by NXP Semiconductors.

These alternative models offer similar functionality and can be used as substitutes for the MM74HC573N in various applications.

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