74HCT573D

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74HCT573D

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Specifications

Brand Nexperia
Product Type Latches
Subcategory Logic ICs
Logic Family HCT

Overview

Description

The 74HCT573D is a high-speed CMOS device that functions as an octal D-type transparent latch with 3-state outputs, part of the 74HCT logic family. It consists of eight latches with separate D-type inputs and 3-state outputs. The device is controlled by two pins: a latch enable (LE) and an output enable (OE). When LE is high, the data on the D inputs is latched, allowing the outputs to reflect the input data. When LE is low, the latches store the data that was present at the time of transition. The OE pin, when asserted, enables the outputs, while a deasserted state places the outputs in a high-impedance state, allowing for bus line sharing.
The 74HCT573D operates within a supply voltage range of 4.5V to 5.5V, making it compatible with TTL logic levels. It is typically used in applications requiring temporary data storage, such as microprocessor memory interfacing, data buffering, and data multiplexing. The device is available in various surface-mount and through-hole package options, facilitating its integration into diverse circuit designs.

Features

The 74HCT573D is a high-speed CMOS device from the 74HCT series, functioning as an octal D-type transparent latch with 3-state outputs. Key features include:
1. Operating Voltage: It operates with a voltage range from 4.5V to 5.5V, making it compatible with TTL logic levels.
2. Latch Function: The device consists of eight latches, with data transparency when the Latch Enable (LE) input is high. When LE is low, the data is latched.
3. 3-State Outputs: The outputs can be set to a high-impedance state, controlled via the Output Enable (OE) pin. This feature allows for efficient bus interfacing and multiplexing.
4. High-Speed Operation: As part of the HCT family, it is designed for high-speed applications, with propagation delay optimized for quick logic level transitions.
5. Low Power Consumption: The CMOS design ensures lower power dissipation compared to traditional TTL counterparts.
6. Package Options: Available in multiple package types, including SOIC and TSSOP, which offer flexibility for different circuit board designs.
7. Latch Output Capability: Capable of driving up to 15 LSTTL loads, enabling robust signal handling.
These features make the 74HCT573D suitable for applications in data storage, data interfacing, and memory management.

Package

The 74HCT573D is a high-speed CMOS device with an octal D-type transparent latch. It comes in a plastic SO (Small Outline) package, type SOT108-1, which is surface-mountable.

Pinout

The 74HCT573D is a 20-pin integrated circuit that functions as an octal D-type transparent latch with 3-state outputs. It is part of the 74HCT logic family and operates with a high-speed CMOS process. The key functions of the 74HCT573D include:
1. Latch Functionality: It holds data on the inputs once the latch-enable (LE) pin is active, allowing data to be stored temporarily.
2. 3-State Outputs: This feature allows multiple outputs to connect to a common bus without interference. The outputs can be in a high, low, or high-impedance state controlled by the output-enable (OE) pin.
3. Pin Configuration:
- Pins 1–8 and 19 are used for the data inputs (D0–D7).
- Pins 11–18 are the 3-state outputs (Q0–Q7).
- Pin 9 is the latch-enable (LE) control.
- Pin 10 is the output-enable (OE) control.
- Pin 20 is the VCC (power supply).
- Pin 10 is GND (ground).
This configuration makes the 74HCT573D suitable for data storage, buffering, and bus interfacing applications.

Manufacturer

The 74HCT573D is manufactured by Nexperia, a global semiconductor company. Nexperia specializes in producing discrete components, logic, and MOSFETs, focusing on efficiency and miniaturization. They provide essential semiconductor elements that serve a wide range of applications across various industries, including automotive, industrial, computing, and consumer electronics. Nexperia was formed as an independent company in 2017, having been previously part of NXP Semiconductors. The company is headquartered in Nijmegen, Netherlands, and operates with a commitment to high-volume production and consistent supply chain management.

Application

The 74HCT573D is an octal D-type transparent latch with 3-state outputs. It is commonly used in applications such as data storage and transfer, buffering, and driving LEDs or displays. It is useful in microprocessor and microcontroller systems for temporary data storage or isolation. Additionally, it can be used in digital systems for address latching or interfacing input/output ports with peripheral devices.

Equivalent

The 74HCT573D is an octal D-type transparent latch with 3-state outputs. Equivalent products include:
1. SN74HCT573N (Texas Instruments)
2. MM74HCT573 (ON Semiconductor)
3. CD74HCT573 (Texas Instruments)
4. MC74HCT573 (ON Semiconductor)
5. TC74HCT573 (Toshiba)
These are similar in terms of functionality, pin configuration, and electrical characteristics. Always verify the datasheets for compatibility in your specific application.

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