SN74VMEH22501DGGR

Overview

The SN74VMEH22501DGGR is an 8-bit universal bus transceiver with two integral 1-bit three-wire bus transceivers, designed for 3.3-V VCC operation with 5-V tolerant inputs. It features D-type latches and flip-flops for transparent, latched, or clocked modes. The device includes a split LVTTL port providing feedback paths for control and diagnostics. B-port outputs provide high drive (-48 mA/64 mA), while Y and A-port outputs offer -12 mA/12 mA drive. It supports live insertion via Ioff, power-up 3-state, and BIAS VCC circuitry.

Feature Summary

• UBT transceiver combines D-type latches and flip-flops for flexible data transfer modes
• Split LVTTL port provides feedback path for control and diagnostics monitoring
• Supports live insertion through Ioff, power-up 3-state, and BIAS VCC circuitry
• High-drive B-port outputs optimized for large capacitive loads

Applications

• VME64x backplane topologies
• 2eVME protocol interfaces
• 2eSST protocol interfaces
• LVTTL logic level card interfaces

Procurement Notes

Verify the ordering suffix DGGR corresponds to the TSSOP-48 package in tape and reel format. Confirm the 'A' variant designation matches the specific electrical characteristics required for your application. Ensure the component meets RoHS3 compliance standards as specified in the manufacturer's documentation.

Selection Notes

Select this component when a single device must replace multiple standard logic functions such as buffers, latches, and registered transceivers. The integrated feedback paths simplify diagnostic implementation. High drive capabilities on the B-port make it suitable for driving distributed backplane loads effectively.

Part Context

This device belongs to the Texas Instruments Widebus family of universal bus transceivers. It is specifically engineered to support VME64, 2eVME, and 2eSST protocols. The architecture minimizes electromagnetic interference and improves signal integrity through dedicated OEC circuitry.

Replacement Considerations

SN74VMEH22501ADGGR