74HCT245DB,118

Overview

The Nexperia 74HCT245DB,118 is an octal bus transceiver with three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL input levels. The device includes output enable (OE) and direction control (DIR) pins for managing data flow between two buses. It provides non-inverting transmission with high noise immunity and low power dissipation. The component is housed in a 20-lead SO plastic small outline package (SOT163-1).

Feature Summary

• Octal bidirectional bus interface with non-inverting three-state outputs.
• TTL input levels compatible with standard logic families.
• Integrated clamp diodes on inputs allow interfacing with voltages exceeding VCC using current limiting resistors.

Applications

• High-noise industrial environments requiring robust signal transmission.
• Systems utilizing mixed 5 V and 3.3 V logic levels.
• Complex PCB layouts demanding improved signal integrity through controlled impedance.

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the application environment remains within the specified temperature range and voltage limits. Ensure proper ESD handling procedures are followed during assembly. Check for any recent product change notices regarding manufacturing sites or material composition updates.

Selection Notes

Select this component when TTL-compatible inputs are required for an octal bus architecture. The device is suitable for applications needing bidirectional data transfer with active high-impedance states. Consider the thermal performance and package dimensions relative to available board space. Validate that the propagation delay characteristics meet the system timing requirements.

Part Context

This part belongs to the 74HCT series of CMOS logic devices manufactured by Nexperia. It is functionally similar to other octal bus transceivers but specifically optimized for TTL input thresholds. The family offers various package options including TSSOP and leadless QFN variants for different spatial constraints.

Replacement Considerations

Public confirmed substitute part numbers include 74HC245D,118 and 74HCT245PW,118. Verify pin compatibility and electrical specifications before substitution.