SN74LVCC4245ADBRE4

Translators, Level Shifters Overview

The SN74LVCC4245ADBRE4 is an octal dual-supply bus transceiver with configurable output voltage and 3-state outputs. It operates with VCCA at 4.5V to 5.5V and VCCB at 2.7V to 5.5V. The device provides 24mA drive strength at a 3V supply. It features robust, glitch-free power supply sequencing and VCC isolation capabilities. The package is SSOP-24.

Translators, Level Shifters Feature Summary

• Glitch-free power supply sequencing allows either supply rail to be powered on or off in any order without producing glitches on the I/Os.
• VCC isolation feature disables all I/O outputs when either VCCA or VCCB input is below 100mV or left floating.
• Control inputs VIH and VIL levels are referenced to the VCCA voltage.

Translators, Level Shifters Applications

• Data concentrators
• Three phase UPS
• Servo drive power stage module

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix 'E4' against the manufacturer's current documentation to confirm compliance status and manufacturing details. Ensure the SSOP-24 package dimensions match the design constraints. Confirm that the VCCA and VCCB supply requirements align with the system power architecture before finalizing procurement.

Translators, Level Shifters Selection Notes

Select this component for applications requiring asynchronous communication between data buses with different voltage domains. The dual-supply design supports translation from 3.3V to 5V environments and vice versa. Consider the high drive strength for heavier loads and longer traces. Ensure unused inputs are tied to VCC or GND to prevent undefined operational states.

Translators, Level Shifters Part Context

This device belongs to the SN74LVCC4245A family of octal bus transceivers. It is designed for use in systems where bus interface type applications require significant output drive or involve long PCB traces. The pinout allows designers to switch to standard 3.3V or 5V devices without redesigning the board layout.

Translators, Level Shifters Replacement Considerations

The SN74LVC4245A is listed as compatible with this device. Verify functional equivalence regarding voltage levels and drive strength before substitution.

Translators, Level Shifters FAQ

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

The device is fully specified for partial-power-down applications using Ioff. This circuitry disables the outputs to prevent damaging current backflow through the device when it is powered down.

What is the function of the DIR and OE inputs?

The direction-control (DIR) input determines whether data is transmitted from the A bus to the B bus or from the B bus to the A bus. The output-enable (OE) input can disable the device to effectively isolate the buses.