HEF40244BT,652

Overview

The HEF40244BT,652 is an octal buffer and line driver manufactured by Nexperia USA Inc. It features eight 3-state outputs controlled by two independent output enable inputs (1OE and 2OE). The device operates within a supply voltage range of 3.0 V to 15.0 V and supports ambient temperatures from -40 °C to +85 °C. It is housed in a 20-lead SO plastic small outline package (SOT163-1) with a body width of 7.5 mm. Inputs include clamp diodes for interfacing with voltages exceeding VCC.

Feature Summary

• Provides high noise immunity and low power dissipation characteristics typical of CMOS technology.
• Features robust electrostatic discharge protection compliant with JEDEC standards for both human body model and charged device model.
• Includes input clamp diodes that allow the use of current limiting resistors for interfacing with voltages higher than the supply voltage.

Applications

• Memory address decoding
• Clock buffering
• Carry propagation

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm the temperature grade aligns with system requirements. Ensure ESD handling procedures are followed during assembly. Check for RoHS compliance status relevant to the manufacturing region. Validate pinout compatibility with existing PCB footprints before finalizing procurement.

Selection Notes

Select this component when an octal buffer with tri-state capability is required for bus-oriented systems. Consider the wide supply voltage range for flexibility in mixed-voltage designs. Evaluate the propagation delay specifications against the maximum clock frequency of the application. Ensure the package dimensions fit the available board space constraints.

Part Context

This part belongs to the HEF40244B series of octal buffers with 3-state outputs. It is designed as a general-purpose logic device compatible with standard CMOS families. The device serves as a line driver or buffer for digital signals in various electronic circuits requiring signal isolation or driving capability.

Replacement Considerations

HEF40244BT,653