SN74ACT16PWRQ1

Overview

The SN74ACT16PWRQ1 is an automotive-grade hex Schmitt-trigger inverter featuring open-drain outputs and TTL-compatible inputs. It operates within a supply voltage range of 4.5V to 5.5V, providing continuous output drive of 24mA at 5V and supporting up to 75mA in short bursts. The device ensures fast operation with a maximum propagation delay of 7.2ns. Designed for robust performance, it withstands electrostatic discharge up to ±2000V via the human-body model. It functions reliably across an operating free-air temperature range from -40°C to +125°C.

Feature Summary

• TTL-compatible Schmitt-trigger inputs provide high tolerance for slow and noisy input signals through defined hysteresis.
• Open-drain CMOS outputs allow direct wired-OR configurations and support driving low-voltage relay coils or transmission lines.
• High current drive capability enables continuous 24mA output at 5V and supports short-burst currents up to 75mA.

Applications

• Control indicator LEDs
• Drive low-voltage relay coils
• Wired-OR logic implementations

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the SN74ACT16 family includes both TSSOP and WQFN options. Confirm the Q1 suffix aligns with automotive qualification requirements. Ensure the selected variant meets the necessary thermal and electrical specifications for the target application environment before finalizing procurement.

Selection Notes

Select this component when designing circuits requiring noise immunity for digital signals, as the Schmitt-trigger architecture mitigates signal degradation. The open-drain output configuration is suitable for interfacing with different voltage domains or implementing bus structures. Consider the 24mA continuous drive capability when sizing loads, ensuring total power dissipation remains within absolute maximum ratings to prevent device damage.

Part Context

This device belongs to the SN74ACT16-Q1 series, representing Texas Instruments' automotive-grade extension of the standard ACT logic family. It integrates six independent inverters into a single 14-pin package, specifically engineered for reliability in harsh automotive environments while maintaining compatibility with standard TTL logic levels.

Replacement Considerations

SN74ACT16PW

FAQ

How should unused inputs be handled?

Unused TTL-compatible CMOS inputs must not be left floating. They should be terminated directly to VCC or ground, or connected via a pull-up or pull-down resistor (typically 10kΩ) to ensure a valid logic state.

What is the behavior of the open-drain outputs in the high state?

In the high logical state, the open-drain outputs enter a high-impedance state. They do not source current; the output voltage depends on external factors such as a pull-up resistor or connected load.