74HCT541DB,112

Overview

The Nexperia 74HCT541DB,112 is an octal non-inverting buffer and line driver featuring three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V. The device includes two active LOW output enable inputs (OE1 and OE2) that force outputs into a high-impedance state when HIGH. Inputs incorporate clamp diodes for interfacing with voltages exceeding VCC. It utilizes the SO20 plastic small outline package (SOT163-1).

Feature Summary

• Octal non-inverting buffer/line driver architecture with three-state outputs.
• Dual active LOW output enables (OE1 and OE2) for independent control.
• Input clamp diodes allow interface to voltages exceeding VCC using current limiting resistors.

Applications

• High-noise immunity signal buffering in industrial environments.
• Driving bus lines requiring three-state isolation capabilities.
• Line driving applications where TTL input levels are required.

Procurement Notes

Verify the specific ordering suffix ',112' corresponds to the tape and reel packaging format. Confirm the component status remains 'Production' as listed in the datasheet revision history. Ensure compatibility with the specified SO20 package dimensions during PCB layout verification.

Selection Notes

Select this component when TTL-compatible input thresholds are necessary alongside CMOS drive capabilities. The dual enable pins provide flexible control over data flow direction and bus isolation requirements. Verify that the operating temperature range meets the application's environmental constraints.

Part Context

This part belongs to the 74HCT logic family, designed for operation with standard TTL logic levels while utilizing CMOS technology. It serves as a direct functional equivalent to other octal buffers within the same series, providing robust signal transmission across digital systems.

Replacement Considerations

Check for alternative packages such as TSSOP20 if pin spacing differs. Verify that substitute parts maintain identical HCT input threshold specifications and three-state functionality to ensure circuit compatibility without redesign.

FAQ

How do the OE1 and OE2 pins function?

Both OE1 and OE2 are active LOW inputs. When either pin is driven HIGH, all outputs enter a high-impedance OFF-state regardless of the input data levels.

What is the purpose of the input clamp diodes?

The clamp diodes enable the use of current-limiting resistors, allowing the inputs to safely interface with voltages exceeding the VCC supply level.