74LVCH8T245NSRG4

Overview

The SN74LVCH8T245NSRG4 is an 8-bit dual-supply bus transceiver manufactured by Texas Instruments. It features configurable voltage-level shifting and tri-state outputs, enabling seamless communication between systems operating at different voltage levels. The device supports a supply voltage range of 1.65V to 5.5V on both ports A and B. It includes direction control for bidirectional data flow and is housed in a 24-pin NS (SSOP) package.

Feature Summary

• Configurable voltage translation allows operation between diverse logic families without external level-shifting components.
• Bidirectional data transfer capability with common control direction pin simplifies interface design.
• Tri-state outputs isolate the bus when disabled, preventing signal contention.

Applications

• Connecting microcontrollers to memory modules operating at different supply voltages
• Interfacing low-voltage digital logic with legacy 5V or 3.3V peripheral devices
• Voltage bridging in mixed-signal embedded systems

Procurement Notes

Verify the complete part number including suffixes such as 'G4' for lead-free compliance and RoHS status. Confirm the package type matches the required footprint, as variations exist between SSOP and QFN packages within the same logical family. Ensure the specific revision aligns with current manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when interfacing between disparate voltage domains requiring robust bidirectional data transfer. It is suitable for applications needing configurable voltage translation rather than fixed-ratio shifting. Consider the package constraints and thermal requirements relative to the available board space and ambient operating conditions during system integration.

Part Context

This device belongs to the LVCH series of bus transceivers designed for low-voltage CMOS technology. It serves as a bridge between different logic families, offering high performance while maintaining compatibility with standard TTL and LVTTL inputs. The series is widely used in portable electronics and industrial control systems where power efficiency and signal integrity are critical.

Replacement Considerations

Direct replacements include SN74LVCH8T245N and SN74LVCH8T245DWR depending on package preference. Verify pinout compatibility and electrical characteristics against the original design specifications before substitution.