CD74HC541EE4

Overview

The CD74HC541EE4 is a high-speed CMOS octal buffer and line driver with non-inverting logic and three-state outputs. It operates within a supply voltage range of 2 V to 6 V and supports an extended temperature range from -55°C to +125°C. The device features buffered inputs and provides bus driving capability, capable of driving up to 15 LSTTL loads. Typical propagation delay is 9 ns at VCC = 5 V with a 15 pF load. It utilizes a 20-pin PDIP package.

Feature Summary

• Non-inverting octal buffering with three-state output control
• High noise immunity with balanced propagation delays
• Bus line driving capability for multiple loads

Applications

• Bus-oriented architectures
• Clock distribution circuits
• Memory module data drivers

Procurement Notes

Verify the specific ordering suffix EE4 corresponds to the required lead finish (NIPDAU) and RoHS compliance status. Confirm the package type matches the design requirements, as this part number specifies the PDIP-20 configuration. Ensure the operating environment falls within the specified -55°C to +125°C temperature range for reliable performance.

Selection Notes

Select this component when non-inverting signal buffering with tri-state isolation is required in high-speed digital systems. It is suitable for applications needing direct interface with LSTTL loads while maintaining CMOS low power consumption. Consider the PDIP-20 package constraints regarding board space and thermal dissipation compared to surface-mount alternatives.

Part Context

This device belongs to the Texas Instruments HC series of high-speed CMOS logic. It is functionally compatible with other octal buffers in the family but distinguished by its non-inverting nature and three-state outputs. The EE4 suffix indicates a specific manufacturing variant compliant with environmental standards, distinct from military or standard catalog versions.

Replacement Considerations

CD74HC541E

FAQ

How are the three-state outputs controlled?

The outputs are controlled by two active-low enable inputs, OE1 and OE2. Data passes through only when both OE1 and OE2 are LOW; otherwise, the outputs enter a high-impedance state.

What is the input leakage current specification?

The input leakage current is typically ±0.1 μA and maximum ±1 μA at VCC = 6 V across the operating temperature range.