74HCT244DB,112

Overview

The Nexperia 74HCT244DB,112 is an octal buffer and line driver featuring three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL input levels. The device provides two independent output enable inputs (1OE and 2OE), each controlling four outputs. It is housed in a SO20 plastic small outline package with a body width of 7.5 mm.

Feature Summary

• Features non-inverting three-state outputs for bus interface applications
• Includes clamp diodes on inputs to allow current limiting resistors for voltages exceeding VCC
• Provides high noise immunity and low power CMOS dissipation
• Complies with JEDEC standards JESD8C and JESD7A

Applications

• Octal bus interface systems
• Mixed voltage environments requiring level translation
• General-purpose buffering and line driving

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and temperature range. Confirm that the component meets all required electrical specifications for the intended operating conditions before finalizing procurement decisions.

Selection Notes

Select this component when an octal buffer with three-state capability is required for 5 V logic systems. Ensure the application utilizes TTL-compatible input signals. Verify that the SO20 package dimensions fit the available PCB space constraints.

Part Context

This part belongs to the 74HCT series of logic devices, designed for operation at standard 5 V supply voltages. It serves as a buffer or line driver within digital logic circuits, providing signal isolation and drive strength enhancement for connected loads.

Replacement Considerations

The 74HC244D is a compatible alternative within the same family, though it utilizes CMOS input levels rather than TTL levels. Verify input compatibility when substituting HC variants for HCT variants.