SN74LVCC4245APWT

Translators, Level Shifters Overview

The SN74LVCC4245APWT 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, enabling translation between 3.3V and 5V environments. The device features robust glitch-free power supply sequencing and VCC isolation, disabling I/Os if either supply drops below 100mV. It provides a high drive strength of 24mA at 3V supply and includes ESD protection exceeding JESD 22 standards.

Translators, Level Shifters Feature Summary

• Glitch-free power supply sequencing allows independent powering on or off of supply rails without generating erroneous output transitions.
• VCC isolation feature automatically disables all I/O outputs and places them in a high-impedance state when either supply voltage falls below 100mV or remains floating.
• High drive capability supports heavier loads and longer PCB traces with 24mA drive strength at the 3V supply level.
• Low input high-level voltage (VIH) specifications facilitate reliable logic translation between 3.3V and 5V systems.

Translators, Level Shifters Applications

• Data concentrators
• Three phase UPS systems
• Servo drive power stage modules
• Air conditioner outdoor units
• String inverters

Translators, Level Shifters Procurement Notes

Verify the specific package suffix 'PW' corresponds to the TSSOP-24 configuration required for your layout. Confirm that the manufacturing date code aligns with your production schedule, as lead times may vary based on current demand. Ensure that the component meets RoHS3 compliance requirements for your target market regulations before finalizing procurement orders.

Translators, Level Shifters Selection Notes

Select this component when asynchronous communication between data buses requires translation between 3.3V and 5V logic levels. It is suitable for designs needing high drive strength for long traces or heavy loads. Consider this part if partial-power-down applications are required, utilizing the Ioff circuitry to prevent backflow currents during power-down states.

Translators, Level Shifters Part Context

This device belongs to the SN74LVCC4245A family of octal bus transceivers. It shares functional similarities with the SN74LVC4245 but offers distinct dual-supply capabilities. The PW suffix indicates a TSSOP-24 package, providing a compact surface-mount solution for space-constrained printed circuit board designs requiring high-density integration.

Translators, Level Shifters Replacement Considerations

SN74LVC4245APWT

Translators, Level Shifters FAQ

How does the device handle power supply sequencing?

The SN74LVCC4245APWT features glitch-free power supply sequencing, allowing either VCCA or VCCB to be powered on or off in any order without producing glitches on the I/Os.

What happens if one supply rail is disconnected while the other is active?

If either VCCA or VCCB is below 100mV or left floating, the VCC isolation feature disables all I/O outputs, placing them in a high-impedance state to prevent damage or unintended signaling.