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HEF40244BT

Octal buffers with 3-state outputs

The HEF40244B is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Wide supply voltage range from 3.0 to 15.0 V

  • CMOS low power dissipation

  • High noise immunity

  • Complies with JEDEC standard JESD 13-B

  • ESD protection

    • HBM ANSI/ESDA/JEDEC JS-001 exceeds 2000 V

    • MM EIA/JESD22-A115-A exceeds 200 V

  • Specified from −40 °C to +85 °C

Parametrics

Type number Product status VCC (V) Logic switching levels Output drive capability (mA) fmax (MHz) Nr of bits Power dissipation considerations Tamb (°C) Rth(j-a) (K/W) Rth(j-c) (K/W) Package name
HEF40244BT Production 3.0 - 15 CMOS -62 / +45 10 8 medium -40~85 76 52 SO20

PCB Symbol, Footprint and 3D Model

Model Name Description

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
HEF40244BT HEF40244BT,653
(933638680653)
Active HEF40244BT SOT163-1
SO20
(SOT163-1)
SOT163-1 WAVE_BG-BD-1
Not available

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
HEF40244BT HEF40244BT,652
(933638680652)
Withdrawn / End-of-life HEF40244BT SOT163-1
SO20
(SOT163-1)
SOT163-1 WAVE_BG-BD-1
Not available

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
HEF40244BT HEF40244BT,653 HEF40244BT rohs rhf rhf

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type number Orderable part number Chemical content RoHS RHF-indicator
HEF40244BT HEF40244BT,652 HEF40244BT rohs rhf rhf
Quality and reliability disclaimer

Documentation (8)

File name Title Type Date
HEF40244B Octal buffers with 3-state outputs Data sheet 2023-10-20
AN11051 Pin FMEA HEF4000 family Application note 2019-01-09
SOT163-1 3D model for products with SOT163-1 package Design support 2020-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
familyhef4000specification HEF/HEC4000B family specification overview Other type 2012-05-23
SOT163-1 plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body Package information 2022-06-20
HEF40244BT_Nexperia_Product_Reliability HEF40244BT Nexperia Product Reliability Quality document 2023-05-29
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

Support

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Models

File name Title Type Date
SOT163-1 3D model for products with SOT163-1 package Design support 2020-01-22

PCB Symbol, Footprint and 3D Model

Model Name Description

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
HEF40244BT HEF40244BT,653 933638680653 Active SOT163-1_653 2,000 Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
HEF40244BT HEF40244BT,653 933638680653 SOT163-1 Order product