74LCX245MSA

Overview

The onsemi 74LCX245MSA is an octal bus transceiver designed for asynchronous bidirectional data communication. It operates within a supply voltage range of 2 V to 3.6 V and features low input current, typically 1 µA. The device provides large current tri-state outputs capable of driving bus lines or up to 15 LSTTL loads. Key electrical parameters include a propagation delay of 9.5 ns and output currents of ±24 mA. It utilizes an SSOP-24 package and supports LVTTL/TTL inputs with LVCMOS outputs.

Feature Summary

• Enables asynchronous bidirectional data transfer between two buses via direction control
• Provides high-drive tri-state outputs for direct bus interfacing
• Features low input current to minimize power consumption

Applications

• Mobile phone applications
• Consumer products requiring low voltage operation
• Computing systems
• Telecommunications equipment

Procurement Notes

Verify the specific suffix 'MSA' against the manufacturer's official datasheet to confirm the SSOP-24 package type and tape-and-reel orientation. Confirm RoHS compliance status directly from the component documentation. Ensure the operating temperature range matches your system requirements before procurement.

Selection Notes

Select this component when designing systems requiring 2V to 3.6V operation with high drive capability. It serves as a suitable replacement for higher voltage transceivers in space-constrained designs. Verify that the input logic levels are compatible with the source devices, as it accepts LVTTL and TTL signals.

Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices. It is functionally similar to other octal bus transceivers but optimized for lower voltage supplies. The LCX family offers faster switching speeds compared to standard HC series devices while maintaining compatibility with legacy logic families.

Replacement Considerations

Check for pin-compatible alternatives such as the SN74LVC245 or NXP variants. Ensure substitute parts support the same 2V to 3.6V supply range and SSOP-24 packaging. Verify that the replacement maintains the required 24 mA output drive strength.