SN74HC245DBRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC245DBRG4 is an octal bus transceiver from the Texas Instruments SN74HC series, housed in a 20-pin SSOP package. It operates within a supply voltage range of 2 V to 6 V and supports bidirectional data transfer between two buses. The device features three-state outputs with a propagation delay of 22 ns. It provides low-level output current of 6 mA and high-level output current of -6 mA. The component functions at temperatures from -40°C to +85°C with a maximum power supply current of 8 µA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration for simultaneous eight-bit data transmission
• Bidirectional capability controlled by direction input logic levels
• Three-state outputs allow effective bus isolation when disabled

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous communication between data buses
• I/O port expansion in embedded systems
• Memory interface buffering

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix G4 indicates RoHS compliance and green material status as per manufacturer documentation. Confirm the SSOP-20 package dimensions match the target PCB footprint requirements. Ensure the operating temperature range aligns with the environmental conditions of the final assembly. Cross-reference the datasheet revision date to confirm parameter validity.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal, non-inverting bus transceiver is required for CMOS-to-CMOS interfaces. The HC series offers standard switching speeds suitable for general-purpose digital logic applications. Consider the SSOP package size constraints and the 2V to 6V supply voltage compatibility before choosing over other logic families like LVC or ABT.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HC245 family of octal bus transceivers. It serves as a surface-mount variant of the through-hole SN74HC245N. The device is designed for high-density PCB layouts where space is limited compared to DIP packages while maintaining standard logic performance characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC245DWRG4 (SOIC-20 package)

Buffers, Drivers, Receivers, Transceivers FAQ

What controls the direction of data flow?

The Direction (DIR) input determines whether data transfers from A to B or B to A.

How are the outputs isolated from the bus?

The Output Enable (OE) input disables the outputs, effectively isolating the device from the bus lines.