SN74HC244N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC244N is an octal buffer and line driver featuring three-state outputs, housed in a 20-pin PDIP package. It operates within a supply voltage range of 2V to 6V. The device provides high-current outputs capable of driving up to 15 LSTTL loads. Typical propagation delay is 11ns. Maximum low-level output current is 7.8mA, while maximum high-level output current is -7.8mA. Maximum input current is 1µA, and maximum ICC is 80µA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• High-current outputs drive up to 15 LSTTL loads
• Three-state outputs enable bus lines or memory address registers
• Low power consumption with maximum ICC of 80µA
• Standard CMOS inputs require termination at VCC or GND

Buffers, Drivers, Receivers, Transceivers Applications

• Servers
• LED Displays
• Network Switches
• Telecom Infrastructure
• Motor Drivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and temperature rating. Ensure the selected variant matches the required operating conditions for the target application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-drive capability on bus interfaces where PCB trace length is significant. Consider thermal resistance metrics when designing for dense layouts. Ensure unused inputs are terminated to prevent oscillation and excessive power consumption.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC244 family of octal buffers and line drivers. The 'N' suffix specifically denotes the 20-pin Plastic Dual In-Line Package (PDIP). Other variants exist in surface-mount packages such as SOIC, SSOP, and TSSOP.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC244PWR

Buffers, Drivers, Receivers, Transceivers FAQ

How should unused inputs be handled?

Unused inputs must be held at VCC or GND to ensure proper operation. Leaving them floating can cause excessive power consumption and oscillations.

What is the function of the OE pins?

The Output Enable (OE) pins control the state of the outputs. When OE is low, data passes from A inputs to Y outputs. When OE is high, the outputs enter a high-impedance state.