74AHC1G09W5-7

Overview

The 74AHC1G09W5-7 is a single 2-input positive AND gate with an open drain output manufactured by Diodes Incorporated. It operates within a supply voltage range of 2.0V to 5.5V and provides an 8mA sink current at 5.0V. The device features Schmitt trigger inputs for tolerance to slower input rise and fall times, ensuring stable logic transitions. It is housed in a SOT25 package and supports active-low wired-OR or active-high wired-AND functions when connected to other open-drain outputs.

Feature Summary

• Single 2-input positive AND gate with open drain output
• Schmitt trigger action at all inputs for noise immunity
• CMOS low power consumption design
• ESD protection exceeding 200V machine model and 2000V human body model

Applications

• General purpose logic circuits
• PCs, networking equipment, notebooks, and netbooks
• Computer peripherals including hard drives and CD/DVD ROMs
• TV, DVD, DVR, and set-top boxes
• Personal navigation/GPS devices and MP3 players

Procurement Notes

Verify the specific ordering suffix W5 corresponds to the SOT25 package configuration required for your PCB layout. Confirm that the -7 suffix indicates tape and reel packaging with a quantity of 3000 units per reel. Ensure the application circuit includes an external pull-up resistor, as the open-drain output requires one to achieve a high output state.

Selection Notes

Select this component when an open-drain AND gate is required for wired-logic implementations. The Schmitt trigger inputs make it suitable for environments with noisy signals or slow edge rates. Verify that the system voltage falls within the 2.0V to 5.5V operating range and that the 8mA sink capability meets the load requirements.

Part Context

This part belongs to the 74AHC1G series of advanced high-speed CMOS logic gates. It is designed for general-purpose digital applications requiring low power consumption and high noise immunity. The device is RoHS compliant and halogen-free, meeting environmental standards for modern electronics manufacturing.

Replacement Considerations

Direct substitutes include the SN74AHC1G09DBVR from Texas Instruments. Other compatible options may include parts from Nexperia or onsemi within the same logic family, provided they match the open-drain output characteristic and SOT25 package dimensions.

FAQ

Why is a pull-up resistor required for this device?

The 74AHC1G09W5-7 has an open-drain output structure. It can only pull the output line to ground (low state). A pull-up resistor is necessary to connect the output to the supply voltage to achieve a high logic state.

What is the benefit of the Schmitt trigger inputs?

The Schmitt trigger inputs provide hysteresis, which makes the circuit tolerant to slower input rise and fall times. This improves noise immunity and ensures clean switching even with degraded signal edges.