SN74HC20PWT

Inverter Gates Overview

The SN74HC20PWT is a dual 4-input positive-NAND gate manufactured by Texas Instruments in the HC logic family. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -40°C to +85°C. The device features buffered standard CMOS inputs and balanced push-pull outputs capable of driving up to 10 LSTTL loads. Propagation delay ranges from 11 ns to 140 ns depending on voltage, with a typical power dissipation capacitance of 25 pF per gate.

Inverter Gates Feature Summary

• Contains two independent 4-input NAND gates performing Boolean function Y = A · B · C · D
• Balanced CMOS push-pull outputs allow similar sourcing and sinking currents
• Standard CMOS inputs provide high impedance characteristics

Inverter Gates Applications

• Alarm or tamper detect circuits
• S-R latch configurations

Inverter Gates Procurement Notes

Verify the specific ordering suffix against the manufacturer's current package option addendum. Confirm that the component status aligns with project requirements, as availability may vary between active production and obsolete classifications for certain packaging variants.

Inverter Gates Selection Notes

Select this component when designing circuits requiring dual 4-input NAND functionality within the HC logic family. Ensure the design accommodates the specified input transition times to prevent excessive current consumption and oscillations during operation.

Inverter Gates Part Context

This part belongs to the SNx4HC20 series of dual 4-input NAND gates. It is distinct from other logic families such as HCT or LV due to its specific voltage thresholds and performance characteristics defined by the HC technology standards.

Inverter Gates Replacement Considerations

SN74HC20PWR

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 pull-up or pull-down resistors to prevent undefined operational states.

What are the input signal edge rate requirements?

Input signals require fast edge rates as defined in the Recommended Operating Conditions. Slow edge rates can cause oscillations and damaging shoot-through current.