HEF40240BT,653

Description：IC BUFFER INVERT 15V 20SO
Series：4000B
Mfr：NXP USA Inc.
Package：Tape & Reel (TR)

SKU:f179d38ad8ce Category: Buffers, Drivers, Receivers, Transceivers Brand: NXP USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC BUFFER INVERT 15V 20SO
Series：4000B
Mfr：NXP USA Inc.
Package：Tape & Reel (TR)
Logic Type：Buffer, Inverting
Number of Elements：2
Number of Bits per Element：4
Input Type：-
Output Type：3-State
Current - Output High, Low：62mA, 45mA
Voltage - Supply：3V ~ 15V
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：20-SOIC (0.295", 7.50mm Width)
Supplier Device Package：20-SO
Grade：-
Qualification：-

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HEF40240BT,653

Overview

The HEF40240BT,653 is an octal inverting buffer with 3-state outputs manufactured by NXP USA Inc. It operates within a recommended VDD power supply range of 3 V to 15 V referenced to VSS. The device features Schmitt-trigger inputs for improved noise immunity and tolerance to slow input rise and fall times. It utilizes a plastic small outline package (SO20) with 20 leads and a body width of 7.5 mm, conforming to the SOT163-1 version. The component supports ambient temperatures from -40 °C to +85 °C.

Feature Summary

Octal inverting buffers with 3-state outputs controlled by active LOW enable inputs
Schmitt-trigger action on all inputs provides high tolerance to slow input transition rates
Output stages designed with high current capability suitable for driving highly capacitive loads

Applications

Driving highly capacitive loads
Replacing TTL '240' devices due to pin and functional compatibility
Systems requiring noise immunity through hysteresis on inputs

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the HEF40240B family includes both DIP20 and SO20 variants. Confirm that the procurement channel sources directly from authorized distributors or NXP Semiconductors to ensure product authenticity. Check the latest datasheet revision for any updates to static or dynamic characteristics before finalizing design integration.

Selection Notes

Select this component when an octal inverting buffer with tri-state control is required. Ensure the application voltage falls within the 3 V to 15 V operating range. Consider the SO20 package dimensions if space constraints exist, noting the 7.5 mm body width. Verify that the load capacitance requirements align with the specified output drive capabilities and propagation delay formulas.

Part Context

This part belongs to the HEF40240B logic family, which consists of octal inverting buffers with 3-state outputs. The family is standardized to be compatible with TTL '240' devices, facilitating direct replacement in existing designs. The series offers symmetrical output characteristics and is rated for operation across a wide temperature range, supporting various industrial and commercial applications.