SN74LVC245APWG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245APWG4 is an octal bus transceiver from the Texas Instruments LVC logic family, housed in a 20-pin TSSOP package. It operates within a supply voltage range of 1.65 V to 3.6 V and supports asynchronous communication between data buses. The device features three-state outputs with a maximum propagation delay of 6.3 ns at 3.3 V. Inputs accept voltages up to 5.5 V, enabling mixed-mode signal operation. It includes Ioff circuitry for partial-power-down support and provides back drive protection.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports bidirectional data transmission between two 8-bit buses controlled by a DIR input
• Provides high-drive capability with balanced output currents for reliable signal integrity
• Features Ioff circuitry to disable outputs during power-down, preventing damaging backflow current
• Includes robust ESD protection exceeding JESD standards for human-body and charged-device models

Buffers, Drivers, Receivers, Transceivers Applications

• Cable modem termination systems
• Servers
• LED displays
• Network switches
• I/O expanders

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'G4' corresponds to lead-free and RoHS-compliant manufacturing requirements. Confirm the package type matches the required PCB footprint dimensions. Ensure the operating temperature range aligns with the system's environmental specifications. Cross-reference the datasheet revision date to confirm the latest electrical characteristics are applied.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring voltage translation between 1.65-V and 3.6-V domains while maintaining compatibility with 5-V input signals. Consider its high drive strength for applications involving long PCB traces or heavy capacitive loads. Evaluate the need for partial-power-down functionality to support live insertion scenarios without causing bus contention or damage.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC245A series of octal bus transceivers. It is manufactured by Texas Instruments and utilizes CMOS technology. The device is designed for general-purpose digital logic applications where high-speed data transfer and voltage level shifting are required. It is available in multiple package options including TSSOP, SOIC, and SSOP.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC245ADWRG4

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial-power-down conditions?

The SN74LVC245APWG4 incorporates Ioff circuitry that automatically disables the outputs when the device is powered down. This prevents damaging current from flowing back through the device into the power supply.

What is the maximum input voltage supported by the device?

The inputs can accept voltage levels up to 5.5 V, regardless of the VCC supply voltage. This allows the device to interface directly with 5-V devices even when operating at lower supply voltages like 3.3 V or 1.8 V.