Texas Instruments

CD74HC244M  

Buffers, Drivers, Receivers, Transceivers

CD74HC244M Description

The CD74HC244M from Texas Instruments is a high-speed CMOS octal buffer and line driver designed for bidirectional bus interface applications. Housed in a 20-SOIC package, this non-inverting buffer operates within a 2V to 6V supply range, making it compatible with TTL and CMOS logic levels. It features two 4-bit elements, each with 3-state outputs, enabling efficient data flow control in multi-bus systems. With 7.8mA output drive capability (both high and low), it ensures robust signal integrity in demanding environments. The device is RoHS3 compliant, REACH unaffected, and rated MSL 1 (Unlimited), ensuring reliability for industrial and commercial applications.

CD74HC244M Features

• High-Speed CMOS Logic: Ensures low power consumption (typical of HC series) while maintaining high noise immunity.
• 3-State Outputs: Allows bus isolation, reducing contention in shared bus architectures.
• Wide Operating Voltage (2V–6V): Supports mixed-voltage systems and interfaces seamlessly with 5V TTL and 3.3V CMOS logic.
• Balanced Output Drive (7.8mA): Delivers symmetrical sink/source current, ideal for driving capacitive loads (e.g., long PCB traces or multiple inputs).
• Industrial-Grade Reliability: MSL 1 rating ensures no moisture sensitivity concerns, while RoHS3 compliance meets environmental standards.
• Low Propagation Delay: Typically 10ns at 5V, ensuring high-speed data transmission for time-critical applications.

CD74HC244M Applications

• Bus Buffering/Line Driving: Ideal for microprocessor/microcontroller interfaces, where signal integrity is critical (e.g., address/data bus buffering).
• Memory Systems: Used in SRAM/DRAM interfaces to isolate and strengthen control signals.
• Industrial Control Systems: Provides noise-resistant buffering for PLCs, motor drivers, and sensor networks.
• Automotive Electronics: Suitable for CAN bus and LIN bus signal conditioning due to its wide voltage range.
• Test & Measurement Equipment: Ensures low-distortion signal routing in oscilloscopes and logic analyzers.

Conclusion of CD74HC244M

The CD74HC244M stands out as a versatile, high-performance buffer for digital systems requiring robust signal conditioning. Its 3-state outputs, symmetrical drive strength, and broad voltage compatibility make it superior to basic buffers (e.g., 74LS244) in noise-sensitive or multi-voltage designs. With Texas Instruments' proven quality and industrial-grade reliability, it is a top choice for embedded systems, automotive, and industrial automation where speed, power efficiency, and signal integrity are paramount.

CD74HC244M Documents

Download datasheets and manufacturer documentation for CD74HC244M

PCN Part Status Change :

Mult Dev Status Chg 25/Apr/2023      

Datasheets :

CD54,74HC(T)240-41,244      

HTML Datasheet :

CD54,74HC(T)240-41,244      

PCN Design/Specification :

Datasheet 07/Nov/2022       Mult Dev 19/Oct/2022