74AC11240PWRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AC11240PWRE4 is an octal buffer and line driver with three-state outputs manufactured by Texas Instruments. It utilizes the EPIC (Enhanced-Performance Implanted CMOS) process to deliver high-speed performance while maintaining low power consumption. The device features symmetrical active-low output-enable inputs and inverting outputs, organized as two independent 4-bit buffers. It operates within a supply voltage range of 3 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. Key electrical characteristics include a maximum propagation delay of 9.5 ns at 5 V and a typical latch-up immunity of 500 mA at 125°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features a flow-through architecture designed to optimize printed circuit board layout efficiency.
• Incorporates center-pin VCC and GND configurations to minimize high-speed switching noise.
• Provides symmetrical active-low output-enable inputs for precise control of three-state bus operations.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus-oriented receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'PWRE4' corresponds to the TSSOP package type and tape-and-reel packaging configuration. Confirm RoHS compliance and lead finish specifications match project requirements. Ensure the component status is listed as Active for new design implementations. Cross-reference the manufacturer part number against official datasheets to validate pinout and electrical parameters before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal buffering with three-state capabilities and inverting logic functions. The AC logic family offers superior speed compared to standard TTL equivalents while maintaining CMOS compatibility. Consider the specific package constraints of the PW variant if space optimization on the PCB is a priority. Evaluate the power dissipation limits relative to the expected load capacitance and switching frequency.

Buffers, Drivers, Receivers, Transceivers Part Context

This component belongs to the 74AC series of logic integrated circuits, which are based on the Advanced CMOS technology. The 74AC11240 specifically addresses the need for high-density, high-performance buffering in digital systems. It serves as a critical interface element between microprocessors, memory arrays, and peripheral devices, ensuring signal integrity across complex bus architectures.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74AC11240DBR is a direct functional substitute available in the SSOP package format. Both parts share identical electrical characteristics and pinouts, differing only in the physical housing dimensions. Designers should verify mechanical fitment and thermal requirements when transitioning between the PW and DB package options.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the OE input?

The OE (Output Enable) input controls the state of the outputs. When OE is low, the device passes inverted data from the A inputs to the Y outputs. When OE is high, the outputs enter a high-impedance state.

How is the device organized internally?

The 74AC11240 is organized as two separate 4-bit buffers/line drivers, each with its own dedicated OE input, allowing for independent control of the two halves of the octal buffer.