SN74LVT543PWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVT543PWR is a 3.3-V ABT octal registered transceiver with 3-state outputs manufactured by Texas Instruments. It utilizes Advanced BiCMOS technology for low static power dissipation and supports mixed-mode signal operation, allowing 5-V input/output voltages with a 3.3-V VCC supply. The device operates down to 2.7 V for unregulated battery applications. It features active bus-hold data inputs to eliminate external pullup resistors and provides ESD protection exceeding 2000 V per MIL-STD-883C. The component is housed in a 24-pin TSSOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation with 5-V tolerant I/O while operating at 3.3 V
• Contains two sets of D-type latches for temporary storage of bidirectional data flow
• Features active bus-hold circuitry to maintain valid logic levels on floating inputs
• Provides independent control of data flow direction via separate latch-enable and output-enable inputs

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-mode signal environments requiring 5-V interface compatibility with 3.3-V systems
• Unregulated battery-powered operations supporting voltage down to 2.7 V
• Live insertion scenarios requiring robust bus-hold functionality
• Bidirectional data buffering with temporary storage capabilities

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the 24-pin Thin Shrink Small-Outline (PW) package configuration. Confirm that the device status aligns with current design requirements, as availability classifications may change. Ensure that the 3.3-V supply voltage range meets the target application's power specifications before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional data transfer requires temporary storage within a 3.3-V system environment. It is suitable for designs needing 5-V tolerance on inputs and outputs without level shifting. Consider its ABT technology for lower power consumption compared to standard CMOS alternatives. Verify that the 24-pin TSSOP footprint fits the available printed-circuit-board area constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN54/74LVT543 family of octal registered transceivers. The 'SN74' prefix indicates commercial temperature range operation from -40°C to 85°C, distinguishing it from the military-grade SN54 variant. The 'LVT' designation identifies it as a Low-Voltage TTL-compatible device utilizing Advanced BiCMOS technology.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute: SN74LVTH543PWR.