74ABT623D,623

Buffers, Drivers, Receivers, Transceivers Overview

The NXP USA Inc. 74ABT623D,623 is an octal bus transceiver utilizing BiCMOS technology. It features non-inverting 3-state outputs and dual enable inputs (OEAB, OEBA) for asynchronous two-way communication between data buses. The device supports a supply voltage range of 4.5 V to 5.5 V with an operating temperature range of -40 °C to +85 °C. Propagation delays are specified at 4.1 ns maximum at 25 °C and 4.6 ns maximum across the full temperature range. Output drive capabilities include +64 mA low-level and -32 mA high-level currents.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bidirectional bus interface with non-inverting 3-state buffers
• Dual enable configuration allowing data storage by simultaneous enabling
• Power-up 3-state functionality to ensure safe initialization
• Latch-up protection exceeding 500 mA per JESD78B class II level A

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous two-way communication between data buses
• Bus-oriented memory and logic implementations
• Clock drivers and buffer applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package type, as the 74ABT623 series includes SO20, SSOP20, and TSSOP20 variants. Confirm that the D suffix corresponds to the SO20 plastic small outline package with a 7.5 mm body width. Ensure compatibility with the intended operating temperature range and supply voltage requirements before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed octal data transfer with flexible timing control is required. The dual enable feature distinguishes it from standard single-enable transceivers by allowing data latching on the bus. Consider the BiCMOS process for its balance of low power dissipation and high output drive strength compared to standard CMOS alternatives.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ABT logic family, which combines the speed of advanced bipolar technology with CMOS low power consumption. The 74ABT623 specifically addresses applications requiring wide bus interfaces with independent direction control. It serves as a bridge between different logic domains or system components requiring isolated yet high-performance data pathways.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

NXP offers the 74ABT623DB (SSOP20) and 74ABT623PW (TSSOP20) for alternative packaging needs. Texas Instruments provides the SN74ABT623 series, including PDIP-20 and SSOP-20 versions, as functional equivalents within the same logic family.