SN74AHCT08N

Overview

The SN74AHCT08N is a quadruple 2-input positive-AND gate manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to 125°C. The device features TTL-compatible inputs, allowing for up-conversion from 3.3 V logic levels to 5 V. It provides balanced output drive with low-level and high-level output currents of 8 mA each. Propagation delay is specified at a maximum of 9 ns under a 50 pF load condition.

Feature Summary

• TTL-voltage compatible inputs enable seamless up-conversion from 3.3 V to 5 V logic systems.
• Low-drive CMOS architecture minimizes output ringing and overshoot on signal lines.
• Robust electrostatic discharge protection exceeds standard JESD ratings across multiple testing models.

Applications

• Servers
• Network switches
• PCs and notebooks
• Electronic points-of-sale

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current package option addendum to confirm the physical package type and lead finish. Confirm RoHS compliance status and moisture sensitivity level (MSL) rating prior to procurement. Ensure the selected variant matches the required thermal resistance specifications for the intended PCB layout environment.

Selection Notes

Select this component when interfacing 3.3 V logic sources with 5 V bus architectures requiring AND functionality. The AHCT series is appropriate for applications needing TTL input compatibility alongside CMOS power efficiency. Consider the PDIP package for through-hole prototyping or manual assembly processes where surface-mount technology is not feasible.

Part Context

This part belongs to the SNx4AHCT08 family of quadruple 2-input positive-AND gates. The 'H' denotes high-speed CMOS technology, while 'A' indicates advanced process improvements over previous generations. The 'T' signifies TTL-compatible input thresholds, distinguishing it from standard HC series devices that require higher input voltages.

Replacement Considerations

SN74HC08N

FAQ

How does the SN74AHCT08N handle unused inputs?

All unused inputs must be connected to either VCC or GND to prevent undefined operational states caused by floating pins.

What is the purpose of the slow rise and fall times in this device?

The slow transition times are designed to reduce ringing on the output signals, making the device suitable for bus-interface applications where signal integrity is critical.