Encyclopedia Entry: 74HCT373D-Q100,118

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Storage and Transfer
• Characteristics: High-Speed, Octal Transparent Latch with 3-State Outputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The 74HCT373D-Q100,118 is a latch IC that can store and transfer data in digital systems. It provides eight transparent latches with 3-state outputs, making it suitable for applications requiring temporary storage or data transfer.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Latch Type: D-Type
• Number of Latches: 8
• Output Type: 3-State
• Propagation Delay: 13 ns (typical)

Pin Configuration

The 74HCT373D-Q100,118 IC has a total of 20 pins. 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

• Transparent Latching: The 74HCT373D-Q100,118 allows data to pass through the latch transparently when the latch enable (LE) input is high.
• 3-State Outputs: The IC provides 3-state outputs, allowing multiple devices to share a common bus without interference.
• High-Speed Operation: With a propagation delay of only 13 ns, this IC ensures efficient data transfer in time-critical applications.

Advantages and Disadvantages

Advantages: - High-speed operation enables quick data transfer. - 3-state outputs facilitate bus sharing among multiple devices. - Wide operating temperature range (-40°C to +125°C) makes it suitable for various environments.

Disadvantages: - Limited number of latches (8) may not be sufficient for certain applications requiring more storage capacity. - Requires external control signals for proper functioning.

Working Principles

The 74HCT373D-Q100,118 operates based on the principle of transparent latching. When the latch enable (LE) input is high, the data inputs (D0-D7) are transferred to the corresponding latch outputs (Q0-Q7). The outputs remain in this state until the LE input goes low, freezing the stored data. The 3-state outputs allow the device to disconnect from the bus when the output enable (OE1) input is low, preventing any interference with other devices connected to the same bus.

Application Field Plans

The 74HCT373D-Q100,118 finds applications in various digital systems where temporary data storage or transfer is required. Some potential application fields include: - Microprocessor-based systems - Data communication equipment - Industrial automation systems - Memory address decoding circuits - Control units in automotive electronics

Alternative Models

• 74HC373: Similar latch IC with slightly different electrical characteristics.
• 74LS373: Latch IC with TTL (Transistor-Transistor Logic) compatible inputs and outputs.
• CD74HCT373: Latch IC from a different manufacturer with similar functionality.

These alternative models can be considered based on specific requirements or availability.

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