SN74HCT244NG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT244NG4 is an octal buffer and line driver manufactured by Texas Instruments, belonging to the HCT logic family. It features eight non-inverting outputs with three-state capability, organized as two independent four-bit buffers or drivers. Each group has a separate output enable (OE) input. The device operates within a supply voltage range of 4.5 V to 5.5 V. It provides high current drive capabilities, supporting up to 15 LSTTL loads, with typical propagation delays of 13 ns at 5 V. The component utilizes a 20-pin PDIP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configured as two independent four-bit buffers with separate output enable inputs for flexible bus management
• Features three-state outputs that enter a high-impedance state when the output enable signal is high
• Provides high current drive capability suitable for driving multiple LSTTL loads directly
• Ensures TTL voltage compatibility at the inputs while maintaining low static power consumption

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers in three-state environments
• Clock distribution circuits requiring buffered signals
• Bus-oriented receivers and transmitters
• Buffering memory address registers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'E4' indicates lead-free composition and RoHS compliance according to Texas Instruments documentation. Confirm the package type corresponds to the standard 20-pin PDIP configuration. Ensure the operating temperature range meets the system requirements, typically spanning from -40°C to +85°C for this commercial grade variant. Cross-reference the manufacturer part number with official distributors to ensure authenticity and correct revision level.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal buffering with three-state isolation on a 5 V supply. It is appropriate for applications needing to interface between different logic families due to its TTL-compatible inputs. Consider the through-hole PDIP packaging if prototyping or manufacturing processes require soldering rather than surface mount technology. Evaluate the propagation delay specifications against the maximum clock speeds required by the target application.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HCT244 series of octal buffers and line drivers. The HCT designation signifies compatibility with HC logic levels while offering performance characteristics similar to LS TTL. The series includes various package options such as SOIC, SSOP, and TSSOP, with the NG4 variant specifically denoting the PDIP form factor. This family is widely used in digital systems for data direction control and signal buffering.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HCT244N

Buffers, Drivers, Receivers, Transceivers FAQ

How are the outputs controlled?

The device contains two output enable (OE) inputs. When an OE input is low, the corresponding four outputs transmit data. When high, those outputs enter a high-impedance state.

What is the input voltage compatibility?

The inputs are compatible with TTL voltage levels, allowing direct interfacing with other TTL-based logic devices.