74ACT7541QWRKSRQ1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ACT7541-Q1 is an automotive-grade octal buffer or driver featuring open-drain outputs. It operates within a supply voltage range of 4.5V to 5.5V and supports continuous output drive currents of 24mA at 5V, with short burst capabilities up to 75mA. The device provides fast operation with a maximum propagation delay of 9.6ns at VCC = 5V and CL = 50pF. It includes TTL-compatible inputs and dual active-low output enable pins (OE1 and OE2) that control all eight channels simultaneously.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• AEC-Q100 qualified for automotive applications with temperature grade 1 support from -40°C to +125°C
• Features wettable flank QFN package design to improve side wetting and facilitate automatic optical inspection
• Open-drain CMOS outputs allow for wired-AND configurations and level-shifting applications
• TTL-compatible CMOS inputs designed to interface directly with TTL logic devices

Buffers, Drivers, Receivers, Transceivers Applications

• Driving indicator LEDs
• Level-shifting using open-drain outputs
• Controlling relays
• Driving 50Ω transmission lines

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant required, as the RKS (VQFN), PW (TSSOP), and DGS (VSSOP) options share the same core functionality but differ in physical dimensions and thermal characteristics. Confirm that the selected part number suffix matches the desired packaging format. Ensure input signals transition quickly to prevent oscillations and excessive power consumption due to the TTL-compatible input structure.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed buffering with open-drain capability is required in automotive environments. The ACT series offers faster switching speeds compared to standard AHC or AHCT families. Consider the thermal resistance values provided for each package type if significant heat dissipation is expected. Ensure the load capacitance remains within recommended limits to maintain specified performance metrics.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74ACT family of high-speed CMOS logic products. It is specifically engineered for automotive reliability standards, distinguishing it from commercial variants through rigorous qualification processes. The octal configuration allows for efficient bus driving or parallel data buffering in complex electronic systems requiring robust signal integrity.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ACT7541QDGSRQ1 (VSSOP package)

Buffers, Drivers, Receivers, Transceivers FAQ

How do the output enable pins function?

Both OE1 and OE2 must be low for the outputs to be active. If either pin is high, all outputs enter a high-impedance state.

What happens if an input is left floating?

Unused inputs must not be left floating. They should be terminated to VCC or GND to prevent undefined operational states, oscillations, and excessive power consumption.

Can open-drain outputs be connected together?

Yes, open-drain outputs can be connected directly to create a wired-AND configuration or to increase output drive strength.