Texas Instruments CD74HC640 High Speed CMOS Logic Octal Inverting Bus Transceivers with 3-State Outputs CD74HC640M

The CD74HC640M is a high-speed CMOS logic octal inverting bus transceiver featuring three-state outputs. It is designed for applications in multiple-data-bus architectures and offers buffered inputs for improved signal integrity. The device operates over a wide voltage range of 2 V to 6 V and supports a temperature range from -55°C to 125°C, making it suitable for various environmental conditions. This transceiver can drive up to 10 LSTTL loads on standard outputs and 15 LSTTL loads on bus driver outputs, providing significant fanout capabilities. It features balanced propagation delay and transition times, contributing to efficient data transmission. The CD74HC640M also boasts high noise immunity, with input thresholds defined at 30% of VCC at 5 V, ensuring reliable operation in noisy environments. Engineers considering this product should note its compatibility with both CMOS and LSTTL logic levels, making it versatile for different circuit designs.