74LVT244B; 74LVTH244B
3.3 V octal buffer/line driver; 3-state
The 74LVT244B; 74LVTH244B 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. Bus hold data inputs eliminate the need for external pull-up resistors to define unused inputs.
Features and benefits
Octal bus interface
3-state buffers
Speed upgrade of 74LVT244A
Wide supply voltage range from 2.7 to 3.6 V
BiCMOS high speed and output drive
Output capability: +64 mA and -32 mA
Direct interface with TTL levels
Overvoltage tolerant inputs to 5.5 V
Input and output interface capability to systems at 5 V supply
Bus hold data inputs eliminate need for external pull-up resistors to hold unused inputs
No bus current loading when output is tied to 5 V bus
Power-up 3-state
Live insertion and extraction permitted
IOFF circuitry provides partial Power-down mode operation
Latch-up performance exceeds 500 mA per JESD 78 Class II Level B
Complies with JEDEC standards
JESD8C (2.7 V to 3.6 V)
ESD protection:
HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 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) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74LVT244BD | 2.7 - 3.6 | TTL | -32 / +64 | 150 | 8 | medium | -40~85 | 84 | 25.8 | 60 | SO20 |
| 74LVT244BPW | 2.7 - 3.6 | TTL | -32 / +64 | 150 | 8 | medium | -40~85 | 100 | 4.3 | 44 | TSSOP20 |
| 74LVTH244BD | 2.7 - 3.6 | TTL | -32 / +64 | 150 | 8 | medium | -40~85 | 84 | 25.8 | 60 | SO20 |
| 74LVTH244BPW | 2.7 - 3.6 | TTL | -32 / +64 | 150 | 8 | medium | -40~85 | 100 | 4.3 | 44 | TSSOP20 |
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| 74LVT244BD | 74LVT244BD,118 (935262791118) |
Active | 74LVT244BD |
SO20 (SOT163-1) |
SOT163-1 |
WAVE_BG-BD-1
|
SOT163-1_118 |
| 74LVT244BPW | 74LVT244BPW,118 (935262793118) |
Active | LVT244B |
TSSOP20 (SOT360-1) |
SOT360-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT360-1_118 |
| 74LVTH244BD | 74LVTH244BD,118 (935281741118) |
Active | 74LVTH244BD |
SO20 (SOT163-1) |
SOT163-1 |
WAVE_BG-BD-1
|
SOT163-1_118 |
| 74LVTH244BPW | 74LVTH244BPW,118 (935281743118) |
Active | VTH244B |
TSSOP20 (SOT360-1) |
SOT360-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT360-1_118 |
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| 74LVT244BD | 74LVT244BD,118 | 74LVT244BD |
|
|
| 74LVT244BPW | 74LVT244BPW,118 | 74LVT244BPW |
|
|
| 74LVTH244BD | 74LVTH244BD,118 | 74LVTH244BD |
|
|
| 74LVTH244BPW | 74LVTH244BPW,118 | 74LVTH244BPW |
|
|
Documentation (13)
| File name | Title | Type | Date |
|---|---|---|---|
| 74LVT_LVTH244B | 3.3 V octal buffer/line driver; 3-state | Data sheet | 2024-07-08 |
| AN90063 | Questions about package outline drawings | Application note | 2025-10-22 |
| 001aae463 | Block diagram: 74LVT244BD, 74LVT244BDB, 74LVT244BPW, 74LVTH244BD, 74LVTH244BDB, 74LVTH244BPW | Block diagram | 2009-11-04 |
| mna825 | Block diagram: 74LVT244BD, 74LVT244BDB, 74LVT244BPW, 74LVTH244BD, 74LVTH244BDB, 74LVTH244BPW, 74LVT244AD, 74LVT244ADB, 74LVT244APW, 74LVTH244AD, 74LVTH244ADB, 74LVTH244APW | Block diagram | 2009-11-04 |
| SOT163-1 | 3D model for products with SOT163-1 package | Design support | 2020-01-22 |
| SOT360-1 | 3D model for products with SOT360-1 package | Design support | 2020-01-22 |
| lvt244b | lvt244b IBIS model | IBIS model | 2013-04-09 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| TSSOP20_SOT360-1_mk | plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm body | Marcom graphics | 2017-01-28 |
| 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 | 2024-11-15 |
| SOT360-1 | plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.2 mm body | Package information | 2024-11-15 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
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