CD74HC245E

Overview

The CD74HC245E is an octal bus transceiver manufactured by Harris Corporation, belonging to the HC/UH logic series. It features eight bidirectional data channels with true (non-inverted) outputs and three-state capability. The device operates within a supply voltage range of 2.0V to 6.0V and supports a maximum low-level output current of 6mA. It utilizes a 20-pin PDIP package and includes direction control and output enable functions for efficient bus management.

Feature Summary

• Provides bidirectional data transmission across eight parallel channels
• Features non-inverting outputs compatible with standard CMOS logic levels
• Includes dedicated direction control and output enable inputs for bus isolation

Applications

• Bidirectional data bus interfaces in computing systems
• Memory module data routing
• General-purpose I/O expansion circuits

Procurement Notes

Verify the manufacturer designation on the component marking, as Harris Corporation's semiconductor assets were acquired by Texas Instruments. Confirm that the specific part number suffix corresponds to the PDIP-20 package variant. Ensure compliance with relevant RoHS directives if required for the application, noting that older Harris-branded components may have different regulatory status than current TI equivalents.

Selection Notes

Select this component when an octal, non-inverting bus transceiver with three-state outputs is required. It is suitable for applications needing bidirectional data flow controlled by a single direction pin. Verify that the operating temperature range and supply voltage requirements align with the system design constraints before integration.

Part Context

This component is part of the 74HC245 family of octal bus transceivers. It serves as a standard interface solution for connecting microprocessors to peripheral devices or memory banks. The HC series offers speed and power consumption characteristics comparable to Low-Power Schottky TTL while maintaining full CMOS compatibility.