74HCT245DB,112

Overview

The Nexperia 74HCT245DB,112 is an octal bus transceiver with 3-state outputs housed in a 20-lead SO plastic small outline package (SOT163-1). It operates within a supply voltage range of 4.5 V to 5.5 V and supports temperatures from -40 °C to +125 °C. The device features TTL input levels, non-inverting data transfer, and direction control via DIR and OE pins. Propagation delay is typically 12 ns at 4.5 V.

Feature Summary

• Octal bidirectional bus interface with non-inverting 3-state outputs
• TTL input levels compatible with standard logic families
• Direction control managed by dedicated DIR and active LOW OE pins

Applications

• Mixed 5 V and 3.3 V applications
• Industrial control systems
• Telecommunications infrastructure

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component for designs requiring robust bidirectional data transfer between microprocessors and peripheral devices. The HCT logic family ensures compatibility with TTL inputs while operating at standard CMOS voltages. Ensure the PCB layout accommodates the SO20 package dimensions and thermal requirements specified in the datasheet.

Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices manufactured by Nexperia. It is functionally equivalent to other octal bus transceivers in the industry but offers specific packaging and electrical characteristics defined by Nexperia's product standards. The DB suffix indicates the SO20 package variant.

Replacement Considerations

Check for pin-compatible alternatives such as the 74HC245D if CMOS input levels are acceptable. Verify that any substitute maintains the same 3-state output capability and direction control functionality.