SN74ALVCHR16409GR

Overview

The SN74ALVCHR16409GR is a 9-bit, 4-port universal bus exchanger with 3-state outputs from the Texas Instruments Widebus+ family. It operates at supply voltages between 1.65 V and 3.6 V. The device enables synchronous data exchange between four buses using select inputs (SEL0-SEL4) and a clock input. B-port outputs include equivalent 26-Ω series resistors to reduce overshoot and undershoot without external components. Active bus-hold circuitry maintains valid logic levels on floating inputs. The GR package denotes a tape-and-reel Thin Shrink Small-Outline (DGG) configuration.

Feature Summary

• Enables synchronous data exchange between four distinct buses via dedicated select and clock control inputs.
• Integrates active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors.
• B-port outputs feature built-in equivalent 26-Ω series resistors designed to minimize signal overshoot and undershoot.
• Provides glitch-free data transmission through specialized data-flow control logic.

Applications

• Synchronous data routing between multiple system buses
• High-speed digital interconnects requiring controlled data flow
• Bus arbitration systems utilizing universal bus exchange protocols

Procurement Notes

Verify that the ordering suffix 'GR' corresponds to the DGGR package variant in tape-and-reel format as specified in the datasheet notes. Confirm the component meets the -40°C to 85°C operating temperature range requirements for your specific application environment. Ensure all unused control inputs are tied to VCC or GND to maintain proper device operation and prevent undefined states.

Selection Notes

Select this component when designing systems requiring synchronous multi-bus data exchange within the 1.65-V to 3.6-V voltage domain. The integrated series resistors simplify design by removing the need for external damping components. Consider the 56-pin thin shrink small-outline package constraints for PCB layout. Verify that the clock frequency requirements align with the specified timing parameters for your target supply voltage.

Part Context

This device belongs to the Texas Instruments Widebus+ family, utilizing EPIC submicron process technology. It serves as a universal bus exchanger capable of managing complex data paths across four ports. The part is characterized for industrial temperature ranges and includes robust ESD protection exceeding standard MIL-STD-883 specifications. It supports high-density applications through its compact plastic package options.

Replacement Considerations

The SN74ALVCH16409DL is a pin-compatible alternative available in the DL package. Verify that the package type change does not impact thermal or mechanical design constraints. Ensure that any substitute maintains the same 9-bit, 4-port architecture and voltage operating range.