SN74LS244NE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74LS244NE4 is an octal buffer and line driver with 3-state outputs from Texas Instruments. Features unidirectional LS-family logic with enable-low control, 45 pF load capacitance, and 20-pin DIP package. From $0.52 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74LS244NE4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5154(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal buffer/line driver with 3-state outputs for high-impedance bus isolation
- Enable-low control input for simplified bus management and reduced glitch risk
- LS-family TTL logic with 45 pF load capacitance for reliable signal integrity
- 20-pin DIP package (PDIP-T20) for easy through-hole PCB integration
- RoHS compliant (e4 JEDEC-609) with REACH compliance and 15-year YTEOL support
Applications
The SN74LS244NE4 is widely used in data bus buffering and line driving applications in microprocessor systems, where its 3-state outputs allow multiple devices to share a common bus without contention. It is commonly found in memory interface circuits, I/O port expansion, and address/data bus isolation in embedded and industrial control designs. The enable-low control and unidirectional drive capability also make it suitable for signal level restoration and fanout improvement in TTL logic systems.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 15 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | LS |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 45pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 4 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 50mA |
| Prop. Delay@Nom-Sup | 18ns |
| Propagation Delay (tpd) | 18ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## SN74LS244NE4 Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74LS244NE4:
suggested
suggested
suggested
suggested
Frequently Asked Questions
What is the SN74LS244NE4 and what does it do?
The SN74LS244NE4 is an octal buffer and line driver IC from Texas Instruments with 3-state outputs. It provides eight independent buffer channels in a 20-pin DIP package, supporting unidirectional LS-family TTL logic with an active-low enable control. It is designed to drive high-capacitance or low-impedance loads on data buses while isolating the bus when outputs are in the high-impedance (3-state) mode.
What are the key electrical specifications of the SN74LS244NE4?
The SN74LS244NE4 operates on a 5V TTL supply and supports a load capacitance (CL) of 45 pF per channel. It belongs to the LS (Low-power Schottky) logic family, offering typical propagation delays around 8–12 ns. The enable-low control input activates all eight outputs simultaneously, making bus enable/disable straightforward in system designs.
What are typical applications for the SN74LS244NE4?
Typical applications include microprocessor address and data bus buffering, I/O port expansion, memory interface driving, and signal fanout improvement in TTL logic systems. Its 3-state outputs allow safe bus sharing among multiple drivers, making it a standard choice in industrial control boards, embedded systems, and legacy digital designs requiring through-hole components.
Is the SN74LS244NE4 RoHS compliant, and what package does it use?
Yes, the SN74LS244NE4 is RoHS compliant, indicated by the 'e4' JEDEC-609 code and REACH compliance status. It comes in a 20-pin dual-in-line (PDIP-T20) through-hole package, which is ideal for prototyping and applications that require robust mechanical mounting. The part also carries a 15-year end-of-life (YTEOL) rating, ensuring long-term supply availability.
Where can I buy the SN74LS244NE4 and what is the price?
The SN74LS244NE4 is available from authorized distributors worldwide, including major component suppliers. Pricing starts from approximately $0.52 per unit at volume, with stock available for immediate worldwide shipping. FindMyChip aggregates inventory from multiple distributors so you can compare prices and lead times to find the best deal.
Related Guides
AMC1202DWVR Reinforced Isolated Amplifier Selection Guide: AMC1202, AMC1302, AMC3302, AMC1311 Compared
How to choose the right TI AMCxxxx reinforced isolated amplifier for motor drives, BMS, and SiC inverters — covering input range, DC/DC integration, CMTI, and precision.
Jun 13, 2026
How to Choose a Capacitance-to-Digital Converter: AD774x Selection Guide
Compare the AD7745, AD7746, and AD7747 CDC ICs. Learn how to select the right Analog Devices capacitance-to-digital converter for your precision sensing design.
Jun 13, 2026
How to Choose Samsung CL32B226KAJNNNE 22uF 25V X7R 1210 MLCC: Selection Guide for Decoupling and Bulk Capacitance
Complete selection guide for the Samsung CL32B226KAJNNNE 22uF 25V X7R 1210 MLCC: DC bias derating, temperature stability, ESR, and AEC-Q200 compliance for industrial decoupling applications.
Jun 12, 2026
How to Choose Samsung CL05A106MP5NUNC 10uF 10V X5R 0402 MLCC: Selection Guide for Compact Decoupling
Complete selection guide for Samsung CL05A106MP5NUNC 10uF 10V X5R 0402 MLCC: DC bias derating, package tradeoffs, and sourcing tips for compact decoupling.
Jun 12, 2026
Why Buy from FindMyChip
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+ | $3.8500 | $3.85 |
| 100+ | $2.8800 | $288.00 |
| 500+ | $0.7820 | $391.00 |
| 740+ | $0.5154 | $381.39 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”