SN74HC623DWRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC623DWRE4 is an octal bus transceiver manufactured by Texas Instruments in a 20-pin SOIC package. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature from -40°C to +85°C. The device features high-current 3-state outputs capable of driving up to 15 LSTTL loads, with output drive currents of ±6 mA at 5 V. Typical propagation delay is 8 ns, while maximum values reach 27 ns at 6 V. Maximum ICC is 80 µA, and input current is limited to 1 µA max.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Dual-output-enable configuration allows asynchronous two-way communication between data buses
• Lock bus-latch capability enables data storage when both OEAB and OEBA are simultaneously enabled
• High-current 3-state outputs provide robust signal transmission across connected buses

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous two-way communication between data buses
• Bus isolation applications requiring simultaneous enable or disable states
• Data latch functionality for temporary bus state retention

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the component matches the SN74HC623DWRE4 designation, specifically confirming the tape-and-reel packaging format indicated by the suffix. Ensure the manufacturer is Texas Instruments and that the device meets the specified -40°C to +85°C operating temperature range. Cross-reference the datasheet SCLS149C for accurate electrical parameters before integration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when dual-directional bus control and data latching are required within a single IC. The HC logic family ensures compatibility with standard CMOS interfaces. Consider the 20-pin SOIC footprint for PCB layout constraints. Verify that the 2 V to 6 V supply range aligns with the system power architecture.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74HC series of octal bus transceivers. It provides flexible timing control through independent output-enable inputs. The design supports true logic operation and is suitable for general-purpose digital systems requiring bidirectional data transfer with optional storage capabilities on the bus lines.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC623DWR is the equivalent tube-to-tape variant within the same product line.