74HC373D

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74HC373D

+BOM

BUS DRIVER, HC/UH SERIES, 8-BIT

  • ManufacturerNXP USA Inc.

  • Mfr. Part #74HC373D

  • Package SOIC-14

  • In Stock3870

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Specifications

Attribute Value
Package Bulk
Series 74HC
ProductStatus Active
LogicType D-Type Transparent Latch
Circuit 1:8
OutputType Tri-State
Voltage-Supply 2V ~ 6V
IndependentCircuits 1
DelayTime-Propagation 30ns
Current-OutputHighLow 7.8mA, 7.8mA
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case 20-SOIC (0.295, 7.50mm Width)

Overview

Description

The 74HC373D is a high-speed CMOS octal D-type transparent latch with 3-state outputs. It is part of the 74HC family, which operates with a supply voltage range of 2V to 6V. The device is designed for general-purpose digital storage applications. It features eight latches that are controlled by a latch enable input (LE) and a common 3-state output enable input (OE).
When the latch enable (LE) is high, data at the D inputs is latched and appears at the Q outputs. When LE is low, the data input is locked, and the outputs retain the last latched value. The outputs can be disabled to high impedance by making the output enable (OE) input high, allowing for bus interfacing.
The 74HC373D is commonly used in memory address latching and data flip-flop applications. It provides low power consumption and reliable operation, making it suitable for use in a variety of digital systems requiring temporary data storage or isolation.

Equivalent

Equivalent products for the 74HC373D chip, which is an octal D-type transparent latch, include:
- 74HCT373, a similar latch with TTL-compatible input levels.
- CD74HC373, from Texas Instruments.
- SN74HC373, also from Texas Instruments.
- MC74HC373, from ON Semiconductor.
These alternatives generally offer similar functionality and pin compatibility but may differ in parameters such as voltage range or switching speed. Always check the datasheet for specific compatibility details.

Features

The 74HC373D is a high-speed CMOS octal D-type transparent latch featuring 3-state outputs. Key features include:
1. High Speed: Offers fast switching times, making it suitable for high-speed data storage and transfer applications.
2. CMOS Technology: Ensures low power consumption and high noise immunity.
3. Octal Latch: Contains eight latches, ideal for handling 8-bit data simultaneously.
4. Transparent Operation: When the latch-enable (LE) input is high, data inputs are directly transferred to outputs.
5. 3-State Outputs: Outputs can be switched to a high-impedance state, allowing for easy bus interfacing.
6. Wide Operating Voltage: Typically operates from 2V to 6V, offering flexibility for various applications.
7. Robust Design: Provides a typical output current of ±6mA, ensuring reliable performance.
8. Latch Enable and Output Enable Controls: These allow for easy management of data flow and output states.
9. Compatibility: Pin and functionally compatible with other 74 series logic families.
These features make the 74HC373D suitable for a variety of digital applications, including memory interfacing and data buffering.

Pinout

The 74HC373D is a high-speed CMOS logic device featuring an octal transparent latch. It has 20 pins and is commonly used for temporary data storage or interface buffering. The pin functions are as follows:
1. Q0-Q7 (Pins 2, 3, 4, 5, 11, 12, 13, 14): These are the latch output pins where the stored data is output.
2. D0-D7 (Pins 3, 4, 5, 6, 7, 8, 13, 14): These are the data input pins where data is fed into the latch.
3. LE (Latch Enable, Pin 11): When high, data from the input pins is latched to the output pins. When low, the outputs retain their last state.
4. OE (Output Enable, Pin 1): Active low input that controls whether the latch outputs are enabled or in a high-impedance state.
5. VCC (Pin 20): Power supply pin.
6. GND (Pin 10): Ground pin.
The 74HC373D is used in applications requiring temporary data storage, data buffering, or bus interfacing, offering efficient data handling in digital systems.

Manufacturer

The 74HC373D is manufactured by Nexperia. Nexperia is a global semiconductor company that specializes in producing discrete components, logic devices, and MOSFETs. Originally a part of NXP Semiconductors, Nexperia became an independent company in 2017. It focuses on high-volume production and efficiency, serving a wide range of industries including automotive, mobile, industrial, and consumer electronics. Known for its reliability and innovation, Nexperia is headquartered in Nijmegen, Netherlands, and operates production facilities and offices worldwide.

Application

The 74HC373D is an octal D-type transparent latch used in various applications, including:
1. Data Storage: Temporarily holds data for processing in microcontrollers and microprocessors.
2. Bus Interface: Acts as an interface for data buses, aiding in data flow control and isolation.
3. Signal Latching: Captures and holds signal states for digital signal processing.
4. Address Latching: Used in memory interfacing to latch address lines.
5. Control Systems: Employed in control circuits for automation and instrumentation.
6. LED Displays: Drives LED displays by latching display data.
7. State Machines: Forms part of finite state machines in digital logic designs.
These capabilities make it valuable in digital electronics for efficient data handling.

Package

The 74HC373D is a surface-mount device (SMD) and is typically available in a SOIC-20 (Small Outline Integrated Circuit) package.

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