SN74LVC244APWTIn StockTexas Instruments
SN74LVC244APWT is an octal buffer/driver with 3-state outputs in LVC logic family, featuring 24mA output drive, 50pF load capacitance, and 3.6V max supply. From $0.09 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74LVC244APWT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.0919(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal (8-bit) unidirectional buffer/driver with active-low output-enable control
- LVC logic family: operates from 1.65V to 3.6V supply with 5V-tolerant inputs
- High output drive: 24mA sink / 24mA source current for bus-driving applications
- 3-state outputs allow multiple devices to share a common bus without contention
- Available in TSSOP-20 (PWTR) package for compact PCB layout
Applications
The SN74LVC244APWT is widely used in data bus buffering and signal isolation between logic domains in microcontroller and FPGA-based designs. Its 3-state outputs make it ideal for bidirectional bus expansion, address/data line driving, and level-shifting interfaces between 3.3V and 5V systems. Typical applications include embedded systems, industrial controllers, communication equipment, and consumer electronics where low-voltage bus driving is required.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | LVC/LCX/Z |
| JESD-30 Code | R-PDSO-G20 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR, 13 INCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 7.2ns |
| Propagation Delay (tpd) | 16.4ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 1.65V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74LVC244APWT:
Bus Driver, LVC/LCX/Z Series, 8-Func, 4-Bit, True Output, CMOS, PDSO20
Bus Driver, LVC/LCX/Z Series, 8-Func, 4-Bit, True Output, CMOS, PDSO20
Bus Driver, LVC/LCX/Z Series, 8-Func, 4-Bit, True Output, CMOS, PDSO20
Frequently Asked Questions
What is the operating voltage range of the SN74LVC244APWT?
The SN74LVC244APWT operates from a supply voltage (VCC) of 1.65V to 3.6V, making it suitable for modern low-voltage logic systems. Its inputs are 5V-tolerant, allowing direct interfacing with 5V logic without additional level-shifting components.
What package does the SN74LVC244APWT use and what are its dimensions?
The SN74LVC244APWT uses a 20-pin TSSOP (Thin Shrink Small Outline Package) designated as PWTR by Texas Instruments. This compact surface-mount package has a 0.65mm pin pitch, making it well-suited for space-constrained PCB designs in portable and high-density applications.
What is the maximum output current of the SN74LVC244APWT?
The SN74LVC244APWT provides a maximum IOL (output low current) of 24mA and IOH (output high current) of 24mA. This relatively high drive strength for an LVC-family device enables it to drive bus lines with up to 50pF load capacitance at rated speeds.
How does the 3-state output feature work on the SN74LVC244APWT?
The SN74LVC244APWT has active-low output-enable (OE) pins. When OE is high, all outputs are placed in a high-impedance (3-state) condition, effectively disconnecting the device from the bus. This allows multiple buffer/driver ICs to share a single data bus without signal contention.
What are common alternatives to the SN74LVC244APWT?
Common alternatives include the SN74HC244 (5V CMOS family), SN74HCT244 (TTL-compatible inputs), SN74LVCH244A (with bus-hold), and SN74LVC244A in other packages such as SOIC-20 or QFN. For higher drive strength, the SN74ALVCH244 in the ALVCH family offers faster switching and 3.3V to 5V translation.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7000 | $0.70 |
| 8+ | $0.3500 | $2.80 |
| 30+ | $0.2100 | $6.30 |
| 2015+ | $0.0994 | $200.29 |
| 2620+ | $0.0956 | $250.47 |
| 3265+ | $0.0919 | $300.05 |
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