CD74HC652EN

Overview

The CD74HC652EN is a high-speed CMOS octal-bus transceiver and register manufactured by Texas Instruments. It features non-inverting outputs, independent registers for A and B buses, and three-state outputs capable of driving 15 LSTTL loads. The device operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -55°C to 125°C. It utilizes silicon-gate CMOS technology to achieve speeds similar to LSTTL with low power consumption.

Feature Summary

• Non-inverting octal-bus transceiver with independent storage registers for both data buses
• Three-state outputs designed to drive up to 15 LSTTL loads
• Silicon-gate CMOS technology providing LSTTL-like speeds with standard CMOS power levels

Applications

• Multiplexed transmission of data directly from the data bus or internal storage registers
• Octal-bus management functions involving real-time and stored data transfer
• System designs requiring simultaneous input isolation and output buffering

Procurement Notes

Verify that the specific part number matches the required package type and temperature rating. Confirm the datasheet version aligns with your design requirements. Ensure proper electrostatic discharge handling procedures are followed during assembly and testing. Check for any alternate source recommendations if availability is a concern.

Selection Notes

Select this component when an octal-wide bus interface with storage capability is needed. The HC series offers wide voltage operation suitable for various logic families. Consider the HCT variant if direct compatibility with LSTTL inputs at 5V is strictly required without level shifting.

Part Context

This device belongs to the CD74HC652 family of high-speed CMOS logic components. It is functionally equivalent to the Harris Semiconductor HM52652. The 'EN' suffix indicates a 24-lead PDIP package with an extended industrial temperature range. It serves as a bridge between microprocessors and peripheral devices in complex digital systems.

Replacement Considerations

CD74HCT652M