SN74HCT08DE4

Inverter Gates Overview

The SN74HCT08DE4 is a quadruple 2-input positive-AND gate from the Texas Instruments SN74HCT08 family. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-voltage compatible inputs with low input current (1µA max). The device provides ±4mA output drive at 5V and can drive up to 10 LSTTL loads. Typical propagation delay is 13ns, with maximum values reaching 27ns at 5.5V. It consumes low power, with a maximum ICC of 20µA. The component is housed in a 14-pin SOIC package.

Inverter Gates Feature Summary

• Contains four independent 2-input AND gates performing Boolean function Y = A • B
• Inputs are TTL-voltage compatible for direct interfacing with TTL logic systems
• Outputs capable of driving up to 10 LSTTL loads with ±4mA drive strength
• Low power consumption with maximum supply current of 20µA

Inverter Gates Applications

• Boolean logic implementation requiring positive-AND functions
• Interfacing between CMOS and TTL logic families
• General-purpose digital signal processing circuits

Inverter Gates Procurement Notes

Verify the specific ordering suffix 'E' indicates lead-free/RoHS compliance status as per Texas Instruments documentation. Confirm the package type corresponds to the SOIC (D) drawing provided in the datasheet. Ensure design compatibility with the specified 4.5V to 5.5V operating voltage range and -40°C to 85°C temperature limits before procurement.

Inverter Gates Selection Notes

Select this component when TTL-compatible inputs are required alongside CMOS noise immunity. The SN74HCT08 series is suitable for applications needing moderate speed (typical 13ns delay) and standard drive capabilities. Consider alternative packages like SSOP or TSSOP if space constraints exist, ensuring the selected variant matches the required pin count and thermal characteristics.

Inverter Gates Part Context

The SN74HCT08DE4 belongs to the SN74HCT08 family of quadruple 2-input AND gates manufactured by Texas Instruments. This family utilizes HCT technology to provide CMOS performance with TTL-compatible inputs. The device is part of the broader 74-series logic ecosystem, designed for general-purpose digital applications requiring reliable logic gating within standard industrial temperature ranges.

Inverter Gates Replacement Considerations

SN74HCT08DRG4

Inverter Gates FAQ

What is the typical propagation delay for the SN74HCT08?

The typical propagation delay (tpd) is 13ns at 5V supply voltage.

Can the SN74HCT08 inputs be left floating?

No, all unused inputs must be held at VCC or GND to ensure proper device operation and prevent undefined operational states.