SN74HCS09DR

Inverter Gates Overview

The SN74HCS09DR is a quadruple 2-input AND gate featuring open-drain outputs and Schmitt-trigger inputs. It operates within a supply voltage range of 2 V to 6 V, with an ambient temperature rating from -40°C to +125°C. The device provides ±7.8-mA output drive capability at 5 V. Propagation delay ranges from 9 ns to 15 ns depending on voltage. It is housed in a 14-pin SOIC package.

Inverter Gates Feature Summary

• Schmitt-trigger inputs provide tolerance for slow or noisy input signals.
• Open-drain CMOS outputs allow for wired-AND connections without bus contention.
• Low power consumption with typical supply current of 100 nA.

Inverter Gates Applications

• Combining power good signals
• Enabling digital signals

Inverter Gates Procurement Notes

Verify the specific ordering suffix 'DR' corresponds to the SOIC-14 package and tape-and-reel carrier format. Confirm RoHS compliance and lead finish specifications match project requirements. Ensure the operating temperature range aligns with environmental constraints.

Inverter Gates Selection Notes

Select this component when open-drain logic functionality is required for multiple independent AND operations. The Schmitt-trigger inputs are suitable for environments with signal noise or slow rise times. Verify that external pull-up resistors are included in the design to manage the high-impedance state of the outputs.

Inverter Gates Part Context

This part belongs to the Texas Instruments HCS logic family, designed for low-power applications. It serves as a specialized variant of standard logic gates by incorporating open-drain outputs and Schmitt triggers, distinguishing it from push-pull output counterparts like the SN74HC09.

Inverter Gates Replacement Considerations

SN74HCS09-Q1 is the automotive qualified version of this device.

Inverter Gates FAQ

How should unused inputs be handled?

Unused inputs must not be left floating; they should be terminated to either VCC or ground using a resistor, typically 10 kΩ, to prevent undefined operational states.

Can the outputs be connected directly together?

Yes, the open-drain outputs can be directly connected to form a wired-AND function because they cannot source current, preventing bus contention.