SN74ACT244DWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74ACT244DWRG4 is an 8-channel non-inverting 3-state buffer and line driver from Texas Instruments in the ACT CMOS logic family, housed in a 20-pin SOIC package. It provides 24 mA output sink current with 50 pF load capacitance rating for driving capacitive bus loads at TTL-compatible input thresholds. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74ACT244DWRG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1755(MOQ 250)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74ACT244DWRG4?
- 8-channel unidirectional bus driver with 3-state outputs enables high-impedance bus sharing across multiple devices
- ACT-family CMOS logic accepts TTL-compatible input levels while delivering CMOS output swings on a single 5 V supply
- 24 mA output sink current and 50 pF load capacitance rating supports driving heavily loaded PCB bus lines
What is SN74ACT244DWRG4 used for?
SN74ACT244DWRG4 is used in microprocessor address and data bus buffering, memory expansion interfaces, and backplane signal distribution where multiple devices share a common bus. The 3-state enable control allows the driver to be tri-stated during bus contention or DMA transfers, protecting upstream logic from back-drive currents. Its ACT family speed characteristics make it suitable for systems operating at clock frequencies up to 100 MHz.
What are the specifications of SN74ACT244DWRG4?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | ACT |
| 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 | 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, 13 INCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 10ns |
| Propagation Delay (tpd) | 10ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| 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 |
| 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 |
| Country of Origin | Mainland China, Malaysia, Philippines, Thailand |
Where can I find the SN74ACT244DWRG4 datasheet?
SN74ACT244DWRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ACT244DWRG4?
Compatible alternatives and drop-in replacements for SN74ACT244DWRG4:
Frequently Asked Questions
What is the output drive capability of SN74ACT244DWRG4 and how many bus loads can it drive?
SN74ACT244DWRG4 sinks up to 24 mA per output at a maximum output low voltage of 0.55 V, and sources 15 mA at output high. With a 50 pF load capacitance rating, it can drive PCB buses with up to 10 standard CMOS or TTL inputs plus typical PCB trace capacitance of around 5 pF per centimeter.
How does the active-low output enable control work on SN74ACT244DWRG4?
The device has 2 active-low enable pins (OE1 and OE2), each controlling 4 of the 8 output channels. Pulling an enable high places all 4 associated outputs into high-impedance state, removing them from the bus within a typical propagation delay of 7 ns. This allows two groups of 4 channels to be independently tri-stated for bus arbitration.
In what systems is the ACT logic family of SN74ACT244DWRG4 preferred over standard HC or HCT buffers?
ACT-family devices operate with TTL input thresholds (VIH = 2.0 V, VIL = 0.8 V) rather than CMOS thresholds, making SN74ACT244DWRG4 directly compatible with 3.3 V or 5 V TTL-output processors without level-shift components. The ACT family also offers faster propagation delays of typically 5 ns versus 10 ns for HCT, suited for 100 MHz bus designs.
Does the 20-pin SOIC package of SN74ACT244DWRG4 affect assembly on automated SMT lines?
The 20-pin SOIC package has a 1.27 mm lead pitch and a body width of 7.5 mm, which is fully compatible with standard pick-and-place equipment and solder-paste stencil apertures. The DWRG4 suffix indicates a tape-and-reel packaging format with green (RoHS-compliant) marking, simplifying integration into high-volume automated SMT assembly processes.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $0.2160 | $54.00 |
| 500+ | $0.1890 | $94.50 |
| 1000+ | $0.1755 | $175.50 |
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.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit