HD74HC244P

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HD74HC244P

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  • Mfr.부분 #HD74HC244P
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사양

Manufacturer RENESAS
Package DIP-20
Operating Temperature -40℃~+85℃

개요

Description

The HD74HC244P is a high-speed CMOS octal buffer/line driver with 3-state outputs. It is designed for use in a variety of applications, such as memory address driving, clock buffering, or data bus interfacing in digital systems. The device features two sets of four line drivers with separate active-low enable inputs (1G and 2G), allowing for independent control of each 4-bit section. This means you can enable or disable each section as needed, providing flexibility in circuit design.
The HD74HC244P operates on a voltage range of 2V to 6V, making it suitable for use in both 3.3V and 5V systems. It offers high noise immunity and low power consumption inherent to CMOS technology. The device's 3-state output capability allows multiple outputs to connect to a common bus line without interference when the outputs are disabled (in high-impedance state). Its high-speed performance is characterized by fast switching times, making it suitable for high-frequency applications. The HD74HC244P is commonly used in logic level translation, signal buffering, and driving capacitive loads in digital electronics.

Features

The HD74HC244P is a high-speed CMOS octal buffer/line driver with 3-state outputs. Key features include:
1. High-Speed Operation: Utilizes advanced silicon-gate CMOS technology to achieve high speeds similar to equivalent LSTTL.
2. Low Power Consumption: Leverages CMOS technology for lower power dissipation.
3. 3-State Outputs: Provides three-state control for outputs, allowing for direct bus line driving and bidirectional data flow.
4. Wide Operating Voltage Range: Operates effectively over a broad range of supply voltages, typically from 2V to 6V.
5. Input and Output Compatibility: Compatible with TTL and NMOS devices, allowing for flexible interfacing within mixed-technology systems.
6. Noise Immunity: Offers excellent noise immunity due to its CMOS structure.
7. Pin Configuration: Features a standard 20-pin DIP (Dual Inline Package) layout, facilitating easy integration into various circuit designs.
These features make the HD74HC244P suitable for applications needing buffering, driving, or interfacing data lines, particularly in digital circuits where bus line architecture is employed.

Package

The HD74HC244P is a DIP (Dual In-line Package) type integrated circuit. It is a high-speed CMOS logic IC with 20 pins and is used for buffering and driving signals in digital circuits.

Pinout

The HD74HC244P is a 20-pin integrated circuit that functions as an octal buffer/line driver with 3-state outputs. It is commonly used to improve signal integrity by driving high-capacitance loads and to isolate different parts of a circuit. Here is a brief overview of its pin functions:
- Pins 1 & 19: Output enable (OE1 and OE2), active-low inputs that control the output states.
- Pins 2-9: Data inputs (A1 to A8) for the octal buffer.
- Pins 18-11: Corresponding data outputs (Y1 to Y8) for the input signals.
- Pin 10: Ground (GND) for the circuit.
- Pin 20: Supply voltage (VCC) for powering the IC.
The HD74HC244P can be used in various applications requiring signal buffering, level shifting, or driving larger loads. Its 3-state outputs allow for connection to a shared bus without the risk of signal interference, provided the output enable inputs are correctly managed.

Manufacturer

The HD74HC244P is manufactured by Renesas Electronics Corporation. Renesas is a Japanese semiconductor company that designs and manufactures a wide range of semiconductor products, including microcontrollers, mixed-signal integrated circuits, and power management systems. The company is known for its innovations in electronics, providing solutions in various sectors such as automotive, industrial, infrastructure, and consumer electronics. Renesas is one of the largest semiconductor companies globally, formed through the merger of several companies, including the semiconductor operations of Hitachi, Mitsubishi Electric, and NEC Electronics. The company focuses on delivering comprehensive technology solutions that contribute to the advancement of electronics and efficient energy usage.

Application

The HD74HC244P is a high-speed CMOS octal buffer/line driver primarily used for signal amplification and data distribution. Key application areas include memory addressing, bus interfacing, and data communication systems. It is suitable for use in microprocessor systems, peripheral device interfaces, and for driving capacitive loads. Additionally, its capability to manage multiple signals makes it ideal for multiplexing and demultiplexing tasks in digital circuits.

Equivalent

The HD74HC244P is an octal buffer/line driver with 3-state outputs. Equivalent products include:
1. 74HC244 (various manufacturers like Texas Instruments, NXP, ON Semiconductor)
2. SN74HC244N (Texas Instruments)
3. MC74HC244A (ON Semiconductor)
4. CD74HC244E (Texas Instruments)
5. NXP's 74HC244D
These equivalents have similar functionalities and electrical characteristics suited for buffering and driving signals in digital circuits. Always verify the datasheet for exact compatibility.

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