74LCXH245MTC

Overview

The onsemi 74LCXH245MTC is a low voltage bidirectional transceiver with bushold, housed in a 20-lead Thin Shrink Small Outline Package (TSSOP). It contains eight non-inverting buffers with 3-state outputs. The device operates within a supply voltage range of 2.0V to 3.6V and supports an operating temperature from -40°C to +85°C. It features 5V tolerant control inputs and provides output drive currents up to ±24mA at VCC = 3.0V. Propagation delay is specified as a maximum of 7.0ns at VCC = 3.3V.

Feature Summary

• Bushold circuitry eliminates the need for external pull-up or pull-down resistors to hold unused or floating data inputs at a valid logic level.
• Implements patented noise and EMI reduction circuitry to minimize signal interference during operation.
• Provides power down high impedance outputs to ensure glitch-free bus loading during power transitions.

Applications

• Bus-oriented applications requiring bidirectional data transfer
• Low voltage (2.5V and 3.3V) system interconnects
• Memory and flash memory interfaces

Procurement Notes

Verify the package type matches the required footprint, specifically the 20-lead TSSOP (Package Number MTC20). Confirm that the ordering code suffix aligns with the desired tape and reel availability if applicable. Ensure the component meets the specific voltage and temperature requirements for the target environment before finalizing procurement.

Selection Notes

Select this component when a bidirectional transceiver with integrated bushold functionality is required to simplify board design by removing external resistors. It is suitable for systems operating between 2.3V and 3.6V where 5V tolerant control inputs are necessary. Consider its propagation delay specifications relative to the system clock speed to ensure timing compliance.

Part Context

This part belongs to the LCXH family of low voltage CMOS logic devices. It is manufactured by onsemi, which acquired Fairchild Semiconductor; consequently, datasheets may reference Fairchild branding. The device serves as a standard octal bus transceiver variant designed for modern low-power digital systems requiring robust signal integrity and simplified input handling.

Replacement Considerations

Public confirmed substitute part numbers: MC74LCX245DWG, MC74LCX245DWR2G.