CD74HCT245EG4

Overview

The CD74HCT245EG4 is a high-speed CMOS logic octal-bus transceiver featuring three-state outputs. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range from -55°C to 125°C (TA). The device provides balanced outputs with a typical propagation delay of 9ns at VCC = 5V. It utilizes a 20-pin DIP package with a lead pitch of 0.300 inches (7.62mm). Output drive capabilities include 4mA for both high and low states.

Feature Summary

• High-speed CMOS technology ensures fast switching performance
• Three-state outputs allow direct connection to bus lines
• Balanced output characteristics maintain signal integrity
• Wide operating temperature range supports industrial environments

Applications

• Memory buffer applications
• Clock drivers
• Bus-oriented transmissions

Procurement Notes

Verify the component marking against the official Texas Instruments datasheet to confirm authenticity. Ensure the package matches the specified 20-DIP dimensions and pin configuration. Check for RoHS compliance markings as indicated in the product documentation. Confirm the manufacturer date code aligns with current production standards to avoid obsolete stock issues during integration.

Selection Notes

Select this component when bidirectional data transfer is required between microprocessors and peripheral devices. It is suitable for systems needing wide temperature stability and robust noise immunity. Consider the 20-pin DIP form factor for through-hole prototyping or legacy board designs requiring manual assembly compatibility.

Part Context

This part belongs to the CD74HCT series of high-speed CMOS logic devices manufactured by Texas Instruments. It serves as an octal bus transceiver, facilitating data movement across multiple lines simultaneously. The HCT series is designed to be compatible with standard TTL logic levels while offering the speed advantages of CMOS technology.

Replacement Considerations

CD74HCT245E is listed as a recommended substitute.