SN74ACT7541DGSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ACT7541DGSR is an octal buffer or driver with open-drain outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs. The device provides continuous output drive currents of ±24mA at 5V, supporting short bursts up to 75mA. It drives 50Ω transmission lines with a maximum propagation delay of 9.6ns at 5V with a 50pF load. Operating temperatures span from -40°C to +125°C. The component is housed in a 20-pin VSSOP (DGS) package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features eight independent buffers with open-drain CMOS outputs that can be simultaneously forced into a high-impedance state via active-low enable inputs.
• Includes TTL-compatible CMOS inputs designed for reduced input voltage thresholds to interface directly with TTL logic devices.
• Capable of driving 50Ω transmission lines and indicator LEDs while providing wired-AND configuration capabilities through the open-drain structure.

Buffers, Drivers, Receivers, Transceivers Applications

• Drive indicator LEDs
• Level-shift using open-drain outputs
• Control relays

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix DGSR corresponds to the VSSOP-20 package variant when sourcing. Confirm RoHS compliance and lead finish specifications against current manufacturer documentation. Ensure design reviews account for the thermal resistance characteristics inherent to the DGS package type during implementation.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring octal buffering with open-drain outputs in a 4.5V to 5.5V environment. It is suitable for systems needing TTL-compatible inputs and high-speed signal transmission. Consider the VSSOP-20 package constraints regarding board space and thermal dissipation requirements for the specific operational temperature range.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ACT7541 family of octal buffers. Other variants include the PW (TSSOP) and RKS (VQFN) packages. The DGSR suffix specifically denotes the VSSOP package with tape-and-reel shipping. All variants share identical electrical characteristics and pinout configurations.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes within the same family include SN74ACT7541PW and SN74ACT7541RKSR. These parts offer identical electrical performance but differ in physical packaging dimensions and thermal properties. Verify mechanical fit and soldering profiles before substitution.

Buffers, Drivers, Receivers, Transceivers FAQ

How do the open-drain outputs function?

The open-drain outputs actively drive low but enter a high-impedance state for the high logical state. They require an external pull-up resistor to define the high voltage level and cannot source current actively.

What happens if inputs are left floating?

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