MC74HC245ADW

Overview

The MC74HC245ADW is an octal bus transceiver manufactured by onsemi, belonging to the HC logic series. It features a 20-pin SOIC package and operates within a supply voltage range of 2 V to 6 V. The device provides non-inverting data transfer with three-state outputs capable of driving 15 LSTTL loads. Key electrical parameters include a propagation delay of 38 ns at 5 V, low input current of 1 uA, and output drive currents of +/-7.8 mA. It functions as a bidirectional transceiver for asynchronous communication between data buses.

Feature Summary

• Octal 3-State Noninverting Bus Transceiver
• High-Performance Silicon-Gate CMOS Technology
• Outputs Directly Interface to CMOS, NMOS, and TTL

Applications

• Two-way asynchronous communication between data buses
• Input buffering
• Clock drivers

Procurement Notes

Verify the specific suffix 'DW' corresponds to the SOIC-20 package in official datasheets. Confirm RoHS compliance status via manufacturer documentation. Ensure ESD handling protocols are followed during assembly due to CMOS sensitivity. Cross-reference pinout compatibility with legacy LS245 designs if replacing older components.

Selection Notes

Select this component when high-speed octal data transfer is required with CMOS compatibility. It serves as a direct pin-compatible replacement for LS245 devices. Consider the 2V to 6V operating range for flexible power supply integration. Verify that the 38 ns propagation delay meets system timing requirements.

Part Context

This part belongs to the 74HC family of high-speed CMOS logic devices. It shares functional similarities with other octal transceivers but offers improved speed over standard HC variants. The device is designed for general-purpose digital applications requiring reliable bidirectional data flow control.

Replacement Considerations

MC74HC245ADWR2

FAQ

Is the MC74HC245ADW compatible with LSTTL inputs?

Yes, with pull-up resistors, the inputs are compatible with LSTTL outputs.

What is the function of the Direction control pin?

The Direction control determines whether data flows from port A to port B or from port B to port A.