SN74LVCC4245APW

Translators, Level Shifters Overview

The SN74LVCC4245APW is an octal bus transceiver in a 24-pin TSSOP package. It features dual power supplies: VCCA operates at 4.5V to 5.5V, while VCCB supports 2.7V to 5.5V. The device provides 3-state outputs with a propagation delay of 2.7 ns and operates within a temperature range of -40°C to +85°C.

Translators, Level Shifters Feature Summary

• Supports voltage translation between 3.3V and 5V environments using separate supply rails.
• Provides robust glitch-free power sequencing allowing independent power rail operation.
• Includes VCC isolation that disables I/O outputs if either supply drops below 100mV.

Translators, Level Shifters Applications

• Data concentrators
• Communication modules
• PLC, DCS, and PAC systems

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the TSSOP-24 package configuration required for your design. Confirm RoHS compliance status and check for any recent Product Change Notifications (PCN) regarding assembly sites or material updates before finalizing procurement.

Translators, Level Shifters Selection Notes

Select this component when asynchronous communication between buses with different voltage levels is required. Ensure the application utilizes the A port for 5V logic and the B port for configurable voltages. Verify that the control circuitry powered by VCCA aligns with the system's primary logic level.

Translators, Level Shifters Part Context

This part belongs to the SN74LVCC4245A series, designed as a high-drive CMOS solution for bus interface applications. It allows designers to replace standard all-3.3V or all-5V devices without redesigning the board layout, maintaining pin compatibility for data paths.

Translators, Level Shifters Replacement Considerations

SN74LVC4245APW

Translators, Level Shifters FAQ

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

The device includes Ioff circuitry that disables outputs to prevent damaging current backflow when the device is powered down.

What happens if one supply rail is disconnected?

If either VCCA or VCCB is below 100mV or left floating, both I/O ports enter a high-impedance state to isolate the buses.