MC74VHC245DTG

Overview

The MC74VHC245DTG is an octal bidirectional bus transceiver manufactured by onsemi, belonging to the 74VHC logic family. It features a TSSOP-20 surface-mount package and operates within a supply voltage range of 2.0 V to 5.5 V. The device provides three-state outputs with a maximum propagation delay of 12 ns at 5 V. It supports CMOS input and output levels, ensuring compatibility with standard digital systems while maintaining low power consumption characteristics typical of advanced high-speed CMOS technology.

Feature Summary

• Octal bidirectional data transfer capability between two 8-bit buses
• Direction control via dedicated pin for seamless signal routing
• Three-state outputs allowing direct connection to system buses
• CMOS compatible inputs and outputs for broad logic integration

Applications

• Memory mapping in embedded systems
• Clock drivers and buffer circuits
• Bidirectional data bus interfaces
• I/O port expansion modules

Procurement Notes

Verify the specific suffix 'DTG' confirms the TSSOP-20 package and lead-free status. Confirm the operating temperature range matches your environmental requirements. Ensure ESD handling protocols are followed during assembly. Cross-reference the datasheet revision date to ensure current electrical specifications. Validate that the manufacturer source is authorized to guarantee component authenticity.

Selection Notes

Select this component when an octal bidirectional interface is required with low voltage operation down to 2.0 V. The 74VHC series offers speed comparable to older bipolar technologies but with lower power dissipation. Consider the TSSOP-20 package constraints for PCB layout. Verify that the 12 ns propagation delay meets the timing requirements of your specific application circuit design.

Part Context

This part belongs to the MC74VHC245 series of octal bus transceivers. It shares functional compatibility with other 74VHC logic devices from onsemi. The DTG suffix indicates a specific tape and reel or tube packaging option depending on the distributor. It serves as a critical interface component in digital logic designs requiring high-speed data transfer.

Replacement Considerations

MC74AC245DTG: Offers similar functionality but with AC series performance characteristics. MC74VHCT245ADTG: Provides TTL-compatible inputs instead of CMOS-only inputs. SN74VHC245DWR: Texas Instruments equivalent with identical logical function and pinout.