SN74AS824ANT

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AS824ANT is a 9-bit bus-interface flip-flop with 3-state outputs manufactured by Texas Instruments. It belongs to the AS logic series and features inverting D-type inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of 0°C to 70°C. Key electrical parameters include a high-level output current of -24 mA and a low-level output current of 48 mA. Propagation delays from CLK to Q are specified between 3.5 ns and 13 ns under standard load conditions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features 3-state outputs designed for driving highly capacitive or low-impedance loads without interface components.
• Includes power-up high-impedance state capability to permit live insertion into systems.
• Utilizes buffered control inputs to reduce DC loading effects on system buses.
• Outputs incorporate undershoot-protection circuitry for enhanced signal integrity.

Buffers, Drivers, Receivers, Transceivers Applications

• Implementing wider buffer registers for expanded data paths
• Serving as bidirectional bus drivers in parallel communication architectures
• Functioning as working registers in microprocessor-based systems
• Facilitating parity bus interfacing for error detection circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific ordering suffix 'NT' corresponds to the standard plastic DIP package variant required for your assembly process. Confirm that the component meets the commercial temperature specifications (0°C to 70°C) rather than military grades, as this part number denotes the industrial version. Ensure compatibility with existing PCB footprints for 24-pin through-hole mounting before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select the SN74AS824ANT when inverting data latching is required for 9-bit wide interfaces. This component is appropriate for applications needing high drive strength (48 mA sink current) to manage heavy bus loads. Consider the SN74AS823A if non-inverting logic behavior is preferred instead. Evaluate the propagation delay characteristics against your system clock speeds to ensure timing margins are sufficient for reliable data capture.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the SN54AS/74AS family of high-speed Schottky logic products. It is functionally equivalent to AMD's AM29824. The SN74AS824A specifically provides inverting outputs, distinguishing it from the non-inverting SN74AS823A. Both devices share identical pinouts and electrical characteristics except for the logic polarity of the data inputs.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AS823ANT serves as a direct functional substitute if non-inverting logic is acceptable. Verify package compatibility and thermal ratings when substituting with other manufacturers' equivalents such as the AMD AM29824.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the difference between SN74AS823A and SN74AS824A?

The primary difference is the data input polarity. The SN74AS823A has non-inverting D inputs, while the SN74AS824A has inverting D inputs. All other electrical characteristics and pinouts remain identical.

How does the Output Enable (OE) pin affect operation?

Taking the OE input high places the nine outputs in a high-impedance state, effectively disconnecting them from the bus. This allows new data to be entered or old data to be retained without loading the bus lines.