MC74AC244NG

Overview

The MC74AC244NG is an octal buffer and line driver from the onsemi AC logic series, housed in a 20-pin DIP package. It features non-inverting inputs and three-state outputs capable of sourcing and sinking 24 mA. The device operates within a supply voltage range of 2 V to 6 V, with a maximum operating temperature of +85 °C and a minimum of -40 °C. Propagation delay is specified at 9 ns at 3.3 V and 7 ns at 5 V. Static current is typically 8 uA, while operating power supply current reaches 80 uA.

Feature Summary

• Octal configuration providing eight independent buffering channels for high-density circuit designs.
• Three-state output capability allows direct connection to bus-oriented systems without additional drivers.
• Non-inverting logic function ensures signal polarity preservation across all channels.

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmitter/receiver circuits

Procurement Notes

Verify the suffix 'NG' confirms the through-hole 20-DIP package variant rather than surface-mount options like 'DWG'. Confirm RoHS compliance status via official manufacturer documentation before integration. Ensure moisture sensitivity handling protocols are followed during storage and assembly processes.

Selection Notes

Select this component when through-hole mounting is required for octal buffering applications. Compare against the 'D' suffix variants if surface-mount technology is preferred. Verify input compatibility with the driving logic family, noting that AC inputs may require level shifting if interfacing with TTL-only sources.

Part Context

This part belongs to the MC74AC244 family of octal buffers. It shares functional similarities with the MC74ACT244 but lacks TTL-compatible input thresholds. The NG designation specifically identifies the dual-in-line package form factor, distinguishing it from SOIC or TSSOP alternatives within the same logical family.

Replacement Considerations

MC74AC244DWG (SOIC-20 package)

FAQ

Does the MC74AC244NG have TTL-compatible inputs?

No, the AC series inputs are not TTL compatible. Use the MC74ACT244NG if TTL input levels are required.

What is the maximum output current for this device?

Each output can source or sink up to 24 mA.