SN74AHCT16540DGVR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AHCT16540DGGR is a 16-bit buffer and driver with 3-state outputs manufactured by Texas Instruments. It utilizes the EPIC (Enhanced-Performance Implanted CMOS) process and belongs to the Widebus family. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. It features TTL-voltage compatible inputs and distributed VCC and GND pins to minimize high-speed switching noise. The package type is TSSOP (DGG) with 48 pins.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides a high-performance bus interface for wide data paths using 16-bit buffers.
• Features a 3-state control gate implemented as a 2-input AND gate with active-low inputs.
• Incorporates distributed VCC and GND pins to minimize high-speed switching noise.
• Ensures high-impedance state during power-up or power-down when OE is tied to VCC.

Buffers, Drivers, Receivers, Transceivers Applications

• Wide data path bus interfaces
• High-performance buffering applications
• Bus drivers requiring 3-state output control

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package style, as the SN74AHCT16540 series includes multiple options such as DL (SSOP), DGV (TVSOP), and DGGR (TSSOP). Confirm that the selected variant aligns with your PCB footprint requirements and manufacturing specifications. Ensure compatibility with the intended operating temperature range and voltage levels before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring 16-bit non-inverting buffering with 3-state outputs. It is suitable for systems needing TTL-compatible inputs and CMOS outputs. Consider the Widebus architecture benefits for PCB layout optimization. Verify that the 4.5 V to 5.5 V supply voltage range meets system power constraints and that the -40°C to +85°C operating range is sufficient for the environment.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is part of the SN54/74AHCT16540 family of 16-bit buffers/drivers. It is designed using the EPIC process technology. The device is characterized for commercial temperature ranges (-40°C to +85°C), while the SN54 variant covers military ranges. It offers latch-up performance exceeding 250 mA per JESD 17 and ESD protection exceeding 2000 V per MIL-STD-883.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include other SN74AHCT16540 variants with different packages, such as SN74AHCT16540DL (SSOP) or SN74AHCT16540DGV (TVSOP), provided the pinout and electrical characteristics remain identical. Ensure any replacement maintains the same 3-state output functionality and voltage compatibility.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the 3-state control gate function?

The 3-state control gate is a 2-input AND gate with active-low inputs. If either output-enable (OE1 or OE2) input is high, all corresponding outputs enter a high-impedance state.

What is the purpose of distributing VCC and GND pins?

Distributed VCC and GND pins are included to minimize high-speed switching noise within the device.

How should unused inputs be handled?

All unused inputs must be held at VCC or GND to ensure proper device operation, as floating inputs can lead to undefined states.