74HC245D,653

Overview

The Nexperia 74HC245D,653 is an octal bus transceiver with 3-state outputs housed in a SO20 plastic small outline package (SOT163-1). It operates on a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C. The device features non-inverting data transfer controlled by Output Enable (OE) and Direction (DIR) inputs. Propagation delay is specified at 7 ns maximum at 6.0 V supply. Input clamp diodes allow interfacing with voltages exceeding VCC using current limiting resistors.

Feature Summary

• Octal bidirectional bus interface with non-inverting 3-state outputs
• Wide supply voltage range supporting mixed 5 V and 3.3 V applications
• Input clamp diodes enable overvoltage tolerance for interfacing
• High noise immunity and low power CMOS dissipation

Applications

• Telecommunications infrastructure
• Industrial control systems
• Test equipment

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the component meets RoHS compliance standards relevant to your region. Ensure the temperature grade aligns with your operational environment requirements before finalizing procurement orders.

Selection Notes

Select this component when an 8-bit bidirectional interface is required within standard logic families. The HC series offers CMOS input levels suitable for general digital logic applications. Consider the HCT variant if TTL input levels are necessary for system compatibility.

Part Context

This part belongs to the 74HC/HCT245 family of octal bus transceivers manufactured by Nexperia. It provides a standard solution for expanding bus width in digital circuits. The D suffix indicates the SO20 surface-mount package configuration.

Replacement Considerations

The 74HCT245D serves as a functional substitute where TTL input levels are preferred. Other package variants such as 74HC245PW or 74HC245BQ offer alternative form factors while maintaining identical electrical functionality.