SN74LVC244ANSRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74LVC244ANSRE4 is an octal buffer and line driver with 3-state outputs from Texas Instruments LVC logic family. Supports 50 pF load capacitance with 24 mA sink current in a 20-pin small outline package. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LVC244ANSRE4 Datasheet PDF
- Category
- Integrated Circuit
- 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-channel) unidirectional buffer/driver with active-low output enable for high-density bus driving applications
- LVC-family logic supports 1.65 V to 3.6 V VCC operation with 5 V tolerant inputs for mixed-voltage system interfacing
- 3-state outputs with 24 mA IOL sink current and 50 pF load capacitance, enabling robust driving of heavily loaded data buses
Applications
SN74LVC244ANSRE4 is well-suited for driving address and data buses between microcontrollers and memory devices in embedded systems operating at 3.3 V or lower supply rails. Its 5 V-tolerant inputs make it a popular choice for level-shifting and bus isolation in mixed-voltage designs connecting legacy TTL components to modern LVC logic. The 20-pin SOP package and 3-state control simplify board-level bus arbitration in industrial controllers and communications equipment.
Specifications
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | LVC/LCX/Z |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| 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 | SOP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| 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 |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| 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 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74LVC244ANSRE4:
Bus Driver, LVC/LCX/Z Series, 8-Func, 4-Bit, True Output, CMOS, PDSO20
Bus Driver, LVC/LCX/Z Series, 2-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
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 voltage range does SN74LVC244ANSRE4 support and how does it interface with 5 V legacy logic?
SN74LVC244ANSRE4 operates from a VCC supply of 1.65 V to 3.6 V and features 5 V tolerant inputs. This allows the device to directly receive 5 V logic signals while outputting at 3.3 V or lower, making it a practical level-shifting buffer between legacy 5 V TTL systems and modern low-voltage microcontrollers without extra protection components.
How many channels does SN74LVC244ANSRE4 provide and what is its output drive capability?
SN74LVC244ANSRE4 provides 8 unidirectional buffer channels in a single 20-pin package, controlled by an active-low enable pin. Each output can sink up to 24 mA and source proportionally, driving loads with up to 50 pF capacitance, which accommodates typical PCB trace and memory bus capacitances in embedded systems.
When would SN74LVC244ANSRE4 be preferred over a 74HC244 in a new board design?
SN74LVC244ANSRE4 from the LVC family is preferred over 74HC244 when the system power supply is below 3.3 V, such as 1.8 V or 2.5 V, because HC devices require at least 2 V to 6 V VCC. The LVC variant also offers faster propagation delays and 5 V tolerant inputs at lower supply voltages, making it the better fit in modern low-power embedded and IoT designs.
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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.
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