SN74ALVCH16903DGGR

Overview

The SN74ALVCH16903DGGR is a 3.3-V, 12-bit universal bus driver featuring parity checking and dual 3-state outputs. It operates within a supply voltage range of 2.3 V to 3.6 V and supports clock frequencies up to 125 MHz. The device includes active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors. It is characterized for operation from 0 °C to 70 °C and utilizes an EPIC submicron CMOS process.

Feature Summary

• Checks parity on APAR input and produces YERR output one cycle later
• Operates as either a buffer or an edge-triggered register via MODE pin
• Active bus-hold circuitry maintains valid logic levels on floating inputs
• Dual 3-state outputs allow cascading with a second SN74ALVCH16903

Applications

• High-speed bus drivers requiring parity verification
• Edge-triggered register applications in digital systems
• Cascaded bus architectures utilizing parity summing

Procurement Notes

Verify the specific package type matches the design requirements, as the DGGR suffix indicates a TSSOP-56 reel format. Confirm that the operating temperature range of 0 °C to 70 °C aligns with the intended 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 a 12-bit universal bus driver with integrated parity checking is required. It is suitable for designs needing both buffering and latching capabilities controlled by a single MODE pin. The inclusion of active bus-hold simplifies interface design by removing the necessity for external pullup or pulldown resistors on data lines.

Part Context

This part belongs to the Texas Instruments Widebus family and is manufactured using the Enhanced-Performance Implanted CMOS (EPIC) submicron process. It provides robust ESD protection exceeding 2000 V per MIL-STD-883 and latch-up performance exceeding 250 mA per JESD 17. The device is designed for reliable operation in 3.3-V systems.

Replacement Considerations

Public confirmed substitute part numbers: SN74ALVCH16903DL, SN74ALVCH16903DL.B.