74HC373 Octal D-Type Latch 3-State Output IC (DIP-20 Package)

74HC373 Octal D-Type Latch 3-State Output IC is a high-performance CMOS logic integrated circuit designed for temporary data storage, bus interfacing, and digital signal buffering in modern electronic systems. Built using High-Speed CMOS (HC) technology, this IC offers low power consumption, fast switching speeds, and reliable operation, making it an ideal replacement for traditional TTL logic in low-voltage applications.

The 74HC373 consists of eight transparent D-type latches with independent data inputs (D0–D7) and eight latched outputs (Q0–Q7). It features a Latch Enable (LE) pin and an Output Enable (OE) pin that provides 3-state (tri-state) outputs, allowing multiple devices to share a common data bus without interference. This makes the IC highly suitable for microprocessor-based systems, memory addressing, and bus-oriented architectures.

When the Latch Enable (LE) input is HIGH, the latch is transparent and the outputs follow the inputs. When LE goes LOW, the data present at the inputs is stored (latched) and held stable until the next latch cycle. The 3-state outputs can be disabled using the OE pin, placing the outputs in a high-impedance state and preventing bus contention.

Key Features of 74HC373 Octal D-Type Latch IC

• Eight D-Type Transparent Latches for parallel data storage

• 3-State Outputs enable efficient bus sharing

• High-Speed CMOS Technology for fast switching

• Low Power Consumption compared to TTL devices

• Wide Operating Voltage Range (2V to 6V)

• Direct Replacement for 74LS373 and 74HCT373

• High Noise Immunity for stable operation

• Latch Enable (LE) and Output Enable (OE) Control

• TTL-Compatible Inputs at 5V operation

• Available in DIP and SMD Packages

Technical Specifications

• IC Type: Octal D-Type Transparent Latch

• Logic Family: 74HC (High-Speed CMOS)

• Number of Latches: 8

• Output Type: 3-State (Tri-State)

• Supply Voltage (Vcc): 2V to 6V

• Typical Operating Voltage: 5V

• Propagation Delay: ~15 ns at 5V

• Input Logic Levels: CMOS / TTL compatible

• Operating Temperature Range: –40°C to +85°C

• Package Types: DIP-20, SOIC-20, TSSOP-20

• Pin Count: 20

• Function Compatibility: 74HC373, 74HCT373

Applications of 74HC373 IC

The 74HC373 Octal D-Type Latch IC is widely used in digital electronics and embedded systems where data needs to be temporarily stored or buffered. Common applications include:

• Microprocessor and Microcontroller Systems

• Memory Address Latching (Address/Data Bus Demultiplexing)

• Data Bus Buffering and Isolation

• Register Storage and Data Holding Circuits

• I/O Port Expansion

• Industrial Control Systems

• Digital Communication Equipment

• Embedded Development Boards and Prototyping

• Timing and Control Logic Circuits

In microcontroller-based designs, the 74HC373 is frequently used to separate address and data lines in multiplexed buses, ensuring stable addressing during memory access. Its tri-state capability allows seamless integration with shared buses in complex systems.

Why Choose the 74HC373 Octal Latch IC?

The 74HC373 offers an excellent balance of speed, power efficiency, and flexibility, making it a preferred choice for both professional engineers and hobbyists. Its low power dissipation, high reliability, and industry-standard pin configuration ensure easy integration into new designs as well as legacy system upgrades.

Whether you are designing embedded systems, digital logic circuits, or bus-oriented architectures, the 74HC373 Octal D-Type Latch with 3-State Output IC provides a dependable and cost-effective solution for efficient data handling.

Package Includes:

1 x 74HC373 Octal D-Type Latch 3-State Output IC (DIP-20 Package)

FAQ

1. Where can we buy this 74HC373 Octal D-Type Latch 3-State Output IC?

This product is available online  https://aiiottech.in/product/74hc373-octal-d-type-latch-3-state-output-ic/  and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this 74HC373 Octal D-Type Latch 3-State Output IC after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

Video Link: 74HC373 IC eight latches with 3-state outputs