SN74ALVCH16245DGVR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALVCH16245DGVR is a 16-bit noninverting bus transceiver from the Texas Instruments Widebus family, designed for asynchronous communication between two data buses. It operates within a supply voltage range of 1.65 V to 3.6 V and features 3-state outputs with a maximum propagation delay of 3 ns at 3.3 V. The device provides ±24-mA output drive capability and includes active bus-hold circuitry on data inputs to eliminate external pullup or pulldown resistors. It offers latch-up performance exceeding 250 mA per JESD 17 standards and ESD protection exceeding 2000 V via the human-body model. The component is housed in a 48-pin TVSOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports bidirectional data transmission between A and B ports controlled by DIR and OE signals
• Features active bus-hold circuitry to maintain valid logic states on unused inputs without external components
• Provides high-drive CMOS outputs capable of driving heavy loads and long PCB traces
• Includes input tolerance up to 5.5 V to facilitate down-voltage translation applications

Buffers, Drivers, Receivers, Transceivers Applications

• Cable Modem Termination Systems
• Servers
• LED Displays
• Network Switches
• Telecom Infrastructure
• Motor Drivers
• I/O Expanders

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DGVR' corresponds to the TVSOP-48 package configuration required for your design. Confirm that the manufacturing lot meets RoHS compliance standards as indicated in the orderable addendum. Ensure that the power supply decoupling capacitors are placed close to the VCC terminals to prevent power disturbances during operation. Validate that the input signals do not exceed the absolute maximum ratings to avoid permanent damage.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring 16-bit wide bus interfaces with low power consumption and high-speed performance. It is suitable for applications needing voltage translation from 5 V sources to lower voltage domains like 3.3 V or 1.8 V due to its input tolerance. Consider this part for designs where board space savings are critical, as the integrated bus-hold feature removes the need for discrete resistors. Ensure the operating temperature range of -40°C to 85°C aligns with your environmental requirements.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74ALVCH16245 product line, which is part of Texas Instruments' Widebus family of high-density bus transceivers. The family is characterized by low power consumption and high-speed operation, making it ideal for portable and battery-powered applications. The DGVR suffix specifically denotes the Thin Visual Small Outline Package (TVSOP) with 48 pins, offering a compact footprint for surface-mount assembly.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALVCH16245DGG

Buffers, Drivers, Receivers, Transceivers FAQ

How does the bus-hold circuitry function?

The active bus-hold circuitry holds unused or undriven inputs at a valid logic state, eliminating the need for external pullup or pulldown resistors.

What is the purpose of the DIR input?

The DIR input controls the direction of data flow; when high, data propagates from A to B, and when low, it propagates from B to A.

Can this device be used for voltage translation?

Yes, the 5.5 V input tolerance allows it to be used in down-voltage translation applications, such as translating from 5 V to 3.3 V or 1.8 V.