SN74HC244DWRIn StockTexas Instruments
SN74HC244DWR is an octal buffer and line driver IC with 3-state outputs, featuring HC/UH logic family, 150pF load capacitance, and 7.8mA output current. From $0.10 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74HC244DWR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1013(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal (8-bit) buffer/line driver with 3-state outputs for high-impedance bus isolation
- HC/UH logic family with wide operating voltage range and high noise immunity
- Active-low output enable control for flexible bus management
- 7.8mA output sink current supporting standard TTL and CMOS loads
- SOP-20 (SOIC Wide) package for easy PCB integration and automated assembly
Applications
The SN74HC244DWR is widely used in microprocessor and microcontroller systems as a bus buffer to drive address and data buses over longer traces or across board connectors. It is also applied in memory interface circuits, where 3-state outputs allow multiple devices to share a common bus without contention. Additionally, this device serves in industrial control equipment and communication hardware where signal buffering, level shifting, and bus isolation are required.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 150pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.0078A |
| 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 | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 29ns |
| Propagation Delay (tpd) | 210ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## SN74HC244DWR Alternates Showing results | Image |
| 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, Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HC244DWR:
Frequently Asked Questions
What is the SN74HC244DWR and what does it do?
The SN74HC244DWR is an octal buffer and line driver IC from Texas Instruments with 3-state outputs. It provides 8 unidirectional buffer channels controlled by an active-low enable signal, making it ideal for isolating and driving buses in digital systems with a load capacitance up to 150pF.
What are the key electrical specifications of the SN74HC244DWR?
The SN74HC244DWR belongs to the HC/UH logic family and supports a maximum output sink current (I_ol) of 7.8mA. It operates with a 150pF load capacitance and uses an active-low enable control. The device is RoHS-compliant (Pb-free) and rated for a 15-year estimated time of life (YTEOL).
What package does the SN74HC244DWR come in?
The SN74HC244DWR is available in a 20-pin Small Outline Package (SOP/SOIC Wide), identified by the JESD-30 code R-PDSO-G20. This wide-body SOIC package is compatible with standard SMT assembly processes and offers good thermal and electrical performance.
What are typical applications for the SN74HC244DWR?
Typical applications include address and data bus buffering in microprocessor systems, memory interface circuits, bus isolation in industrial control equipment, and signal buffering in communication hardware. Its 3-state outputs allow multiple drivers to share a common bus without signal contention.
What are common alternatives or compatible replacements for the SN74HC244DWR?
Compatible alternatives include the SN74HC244N (DIP-20 package), SN74HCT244DWR (TTL-compatible input levels), and parts from other manufacturers such as the 74HC244 series from NXP or ON Semiconductor. Ensure voltage and timing compatibility before substituting in your design.
Related Guides
BOM Optimization: How to Reduce Electronic Component Costs Without Sacrificing Quality
Practical strategies for reducing BOM costs by 15-30% through smart component selection, supplier diversification, and procurement optimization.
Apr 9, 2026
Top 10 Microcontrollers in 2025: A Comprehensive Comparison Guide
Detailed comparison of the most popular MCUs in 2025 — STM32, ESP32, RP2040, nRF52, and more. Specs, pricing, ecosystem, and use-case recommendations.
Apr 9, 2026
How to Read an IC Datasheet: A Practical Guide for Engineers
Master the art of reading IC datasheets. Learn what every section means, which specs matter most, and how to extract the information you need for your design.
Apr 9, 2026
Understanding the 2025 Chip Shortage: Which Components Are Affected and What to Do
Analysis of the current semiconductor supply landscape, which components face extended lead times, and strategies for engineers and procurement teams.
Apr 9, 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+ | $0.5255 | $0.53 |
| 150+ | $0.2025 | $30.38 |
| 742+ | $0.1350 | $100.17 |
| 2594+ | $0.1013 | $262.77 |
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.”