SN74VMEH22501ADGGR

Overview

The SN74VMEH22501ADGGR is an 8-bit universal bus transceiver with two integrated 1-bit three-wire bus transceivers, designed for 3.3-V VCC operation with 5-V tolerant inputs. It supports transparent, latched, and flip-flop modes. The B-port outputs provide high drive of -48 mA/64 mA, while Y and A-port outputs provide -12 mA/12 mA. It operates within a supply voltage range of 3.15 V to 3.45 V and an operating temperature range of -40°C to 85°C.

Feature Summary

• UBT transceiver combines D-type latches and flip-flops for transparent, latched, or clocked data transfer
• Split LVTTL port provides feedback paths for control and diagnostics monitoring
• I/O interfaces are 5-V tolerant and compatible with TTL and 5-V CMOS inputs
• Supports live insertion via Ioff, power-up 3-state, and BIAS VCC circuitry

Applications

• High-speed interface between cards operating at LVTTL logic levels and VME64 backplane topologies
• Interface for VME64x backplane topologies compliant with 2eVME protocols
• Interface for VME320 backplane topologies compliant with 2eSST protocols

Procurement Notes

Verify the package type matches the required design footprint, as this part number corresponds to the DGG (TSSOP) variant. Confirm that the operating environment falls within the specified -40°C to 85°C temperature range. Ensure the system design accommodates the 3.3-V supply voltage requirements and utilizes the 5-V tolerant input specifications correctly.

Selection Notes

Select this component when a single device must replace multiple standard logic functions such as buffers, latches, and registered transceivers. It is suitable for designs requiring split ports for diagnostic feedback and high-drive capabilities on the B-port. Consider its compatibility with VME64x and 2eSST protocols if interfacing with these specific backplane standards.

Part Context

This device belongs to the Texas Instruments Widebus Family. It is pin-for-pin compatible with the SN74VMEH22501 but offers a wider operating temperature range. The UBT architecture allows it to function as a transceiver, buffer, latch, or registered transceiver, consolidating multiple logic roles into one integrated circuit.

Replacement Considerations

The SN74VMEH22501A is pin-for-pin compatible with the SN74VMEH22501.