SN74LVC4245APWT

Translators, Level Shifters Overview

The SN74LVC4245APWT is an octal bus transceiver and voltage level shifter from the Texas Instruments 74LVC series. It facilitates asynchronous communication between data buses with independent supply rails: VCCA operates at 4.5 V to 5.5 V, while VCCB supports 2.7 V to 3.6 V. The device features eight bidirectional channels in a 24-pin TSSOP package. Key electrical parameters include a maximum propagation delay of 3.7 ns, output drive capability of 24 mA, and operation across a temperature range of -40°C to +85°C.

Translators, Level Shifters Feature Summary

• Provides bidirectional data transmission between A and B buses controlled by a DIR input signal.
• Enables seamless voltage translation between 5-V and 3.3-V systems without requiring board layout changes.
• Includes an OE input to disable outputs for effective bus isolation.

Translators, Level Shifters Applications

• Mobile phones
• Personal digital assistants
• Handheld terminals

Translators, Level Shifters Procurement Notes

Verify the specific suffix 'PWT' corresponds to the TSSOP-24 package and tape-and-reel orientation. Confirm RoHS compliance status and ensure the VCCA/VCCB voltage requirements align with the target system design before procurement.

Translators, Level Shifters Selection Notes

Select this component when interfacing 5-V logic with 3.3-V logic using an octal bus architecture. Ensure the application requires the specific 2.7-V to 3.6-V VCCB range rather than the wider LVCC variant. Verify pin compatibility with standard 74LS245 footprints if replacing legacy designs.

Translators, Level Shifters Part Context

This part belongs to the 74LVC family of low-voltage CMOS logic devices. It serves as a high-speed, low-power alternative to older LS-series bus transceivers. The device is designed for modern embedded systems requiring efficient voltage level shifting between different logic domains.

Translators, Level Shifters Replacement Considerations

SN74LVCC4245APWT offers similar functionality with a wider VCCB range (up to 5.5 V). SN74LVC4245APWR provides the same electrical characteristics in a reel packaging format.