HEF40244B
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 | VCC (V) | Logic switching levels | Output drive capability (mA) | fmax (MHz) | Nr of bits | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|---|
| HEF40244BT | 3.0 - 15 | CMOS | -62 / +45 | 10 | 8 | medium | -40~85 | SO20 |
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| HEF40244BT | HEF40244BT,653 (933638680653) |
Active | HEF40244BT |
SO20 (SOT163-1) |
SOT163-1 |
WAVE_BG-BD-1
|
Not available |
All type numbers in the table below are discontinued.
| 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Withdrawn / End-of-life | HEF40244BT |
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 |
|
|
All type numbers in the table below are discontinued.
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| HEF40244BT | HEF40244BT,652 | HEF40244BT |
|
|
Documentation (6)
| File name | Title | Type | Date |
|---|---|---|---|
| HEF40244B | Octal buffers with 3-state outputs | Data sheet | 2023-10-20 |
| 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 |
| 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 |
| Nexperia_Selection_guide_2023 | Nexperia Selection Guide 2023 | Selection guide | 2023-05-10 |
| 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 |
Ordering, pricing & availability
Sample
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