SN74LVTH646IPWREP

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH646IPWREP is an 8-bit bus transceiver and register designed for 3.3-V VCC operation with TTL interface capability to 5-V systems. It supports mixed-mode signal operation, unregulated battery operation down to 2.7 V, and hot insertion via Ioff and power-up 3-state features. The device includes bus hold on data inputs, latch-up performance exceeding 500 mA per JESD 17, and ESD protection exceeding 2000-V human-body model. It operates within a temperature range of -40°C to 85°C in a 24-pin TSSOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports multiplexed transmission of data directly from the input bus or from internal registers using select-control inputs.
• Provides active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs without external resistors.
• Enables hot-insertion applications through Ioff and power-up 3-state support that prevents damaging current backflow and driver conflict.
• Features enhanced diminishing manufacturing sources support and controlled baseline qualification pedigree.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus management functions involving real-time and stored data transfer between buses
• Mixed-mode signal operation interfacing 5-V input/output voltages with 3.3-V VCC systems
• Unregulated battery operation environments requiring stable performance down to 2.7 V

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the orderable part number SN74LVTH646IPWREP matches the required TSSOP-24 package and tape-and-reel quantity of 2000 units. Confirm the eco-plan classification is Green (RoHS & no Sb/Br) and lead finish is CU NIPDAU. Ensure the operating free-air temperature range of -40°C to 85°C aligns with system requirements. Check for any specific qualification pedigree details if used in critical applications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring 8-bit bidirectional data transfer with storage capabilities at 3.3 V. It is suitable for interfaces bridging 5-V and 3.3-V domains due to its TTL compatibility. Consider its hot-insertion features for systems where modules are frequently connected or disconnected. Verify that the 150 MHz clock frequency meets the timing requirements of the target application.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments SN74LVTH646 family of 8-bit bus transceivers and registers. It is distinct from the catalog version SN74LVTH646 and the military-grade SN54LVTH646. The 'EP' suffix indicates enhanced product specifications, including controlled baseline and diminished manufacturing sources support, ensuring long-term availability and reliability.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include the catalog version SN74LVTH646 and the military-grade SN54LVTH646. Verify pinout and electrical characteristics match before substitution. The SN74LVTH646IPWREP is specifically noted as active for new designs.