Encyclopedia Entry: 74ACT573PC

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Data storage and transfer
• Characteristics: High-speed, octal transparent latch with 3-state outputs
• Package: DIP (Dual In-line Package)
• Essence: The 74ACT573PC is a latch that can store and transfer data in electronic circuits.
• Packaging/Quantity: Typically sold in packs of 25 units.

Specifications

• Logic Family: ACT
• Number of Bits: 8
• Latch Type: Transparent
• Output Type: 3-state
• Operating Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 6 ns (typical)
• Input Capacitance: 3 pF (typical)
• Output Capacitance: 15 pF (typical)

Detailed Pin Configuration

The 74ACT573PC has a total of 20 pins, which are arranged as follows:

+----+--+----+ OE1 |1 +--+ 20| VCC LE1 |2 19| D0 D7 |3 18| D1 D6 |4 17| D2 D5 |5 74 16| D3 D4 |6 ACT 15| D4 GND |7 573 14| D5 Q7 |8 13| D6 Q6 |9 12| D7 Q5 |10 11| OE2 +-----------+

Functional Features

• The 74ACT573PC is an octal transparent latch, meaning it can store and transfer data on its eight input pins.
• It features 3-state outputs, allowing multiple devices to share a common bus without interfering with each other's signals.
• The latch is enabled by the LE1 (Latch Enable) pin, which controls the transfer of data from the input pins to the output pins.
• The OE1 (Output Enable) and OE2 pins control the output state, enabling or disabling the 3-state outputs.

Advantages and Disadvantages

Advantages: - High-speed operation makes it suitable for applications requiring fast data transfer. - 3-state outputs allow for efficient bus sharing in multi-device systems. - Wide operating voltage and temperature range provide versatility in various environments.

Disadvantages: - Limited number of bits (8) may not be sufficient for certain applications requiring larger data storage. - DIP package may not be as compact as surface-mount alternatives, limiting space-saving possibilities.

Working Principles

The 74ACT573PC operates based on the principle of transparent latching. When the latch enable (LE1) pin is high, the input data is transferred to the output pins. The output enable (OE1 and OE2) pins control the output state, either enabling the outputs to drive external circuitry or placing them in a high-impedance state.

Detailed Application Field Plans

The 74ACT573PC is commonly used in various digital systems where data storage and transfer are required. Some typical application fields include:

1. Microprocessor-based systems
2. Data communication equipment
3. Industrial automation systems
4. Instrumentation and measurement devices
5. Automotive electronics

Detailed and Complete Alternative Models

• 74HC573: Similar octal transparent latch with 3-state outputs, but operates at a lower voltage range (2V to 6V).
• 74LS573: Octal transparent latch with 3-state outputs, compatible with TTL logic levels.
• 74F573: High-speed octal transparent latch with 3-state outputs, suitable for applications requiring faster operation.

These alternative models offer similar functionality to the 74ACT573PC but may have different operating characteristics or voltage requirements.

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