SN74LVC4245APW

Translators, Level Shifters Overview

The SN74LVC4245APW is an octal bus transceiver and voltage level shifter from the Texas Instruments 74LVC4245A series. It features dual power supplies: VCCA operates at 4.5 V to 5.5 V, while VCCB supports 2.7 V to 3.6 V. The device provides eight bidirectional channels with three-state outputs in a 24-pin TSSOP package. It enables asynchronous communication between data buses by directing traffic via a direction control input. An output enable input isolates the bus when disabled. The component is designed for low-voltage CMOS applications and maintains pin compatibility with standard 245 devices.

Translators, Level Shifters Feature Summary

• Bidirectional voltage translation between 5-V (VCCA) and 3.3-V (VCCB) logic domains
• Eight-channel configuration with independent direction control for data flow management
• Three-state outputs allowing effective bus isolation via the output enable input
• Enhanced latch-up protection exceeding 250 mA per JESD 78 standards

Translators, Level Shifters Applications

• Asynchronous communication between data buses
• Memory and memory interface systems
• High-density data acquisition systems

Translators, Level Shifters Procurement Notes

Verify the specific suffix 'P' indicates the TSSOP-24 package variant distinct from other packaging options like PW or DW. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure supply chain sources provide original manufacturer documentation to validate authenticity. Check for any recent product change notifications regarding pinout or electrical characteristics before finalizing procurement orders.

Translators, Level Shifters Selection Notes

Select this component when interfacing 5-V systems with 3.3-V systems requiring high channel density. The LVC series offers lower power consumption compared to older logic families. Verify that the operating temperature range of -40°C to 85°C meets environmental constraints. Ensure the package dimensions fit within the available PCB real estate for the TSSOP-24 form factor.

Translators, Level Shifters Part Context

This part belongs to the Texas Instruments 74LVC4245A family of octal bus transceivers. It serves as a bridge for mixed-voltage digital systems, facilitating signal integrity across different logic levels. The device is widely used in embedded systems where space efficiency and voltage translation are critical design parameters.

Translators, Level Shifters Replacement Considerations

SN74LVCC4245APWT

Translators, Level Shifters FAQ

What is the function of the DIR input?

The DIR input determines the direction of data flow. A high logic level directs data from port A to port B, while a low logic level directs data from port B to port A.

How does the OE input affect operation?

The output enable (OE) input controls the state of the outputs. When active, it allows normal transmission; when inactive, it places the outputs in a high-impedance state to isolate the bus.