SN74AS244ADWIn StockTexas Instruments
SN74AS244ADW is an octal buffer and line driver IC with active-low enable control, featuring 64mA output sink current and 50pF load capacitance in AS logic family. From $2.31, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74AS244ADW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.3130(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal (8-bit) buffer and line driver with unidirectional data flow for high-speed bus interfacing
- Active-low output enable control for flexible bus management and tri-state operation
- High output sink current of 64mA (IOL) for driving heavy capacitive loads
- Advanced Schottky (AS) logic family offering high-speed switching with reduced power consumption
- 20-pin SOIC (R-PDSO-G20) package suitable for space-constrained PCB designs
Applications
The SN74AS244ADW is widely used in data bus buffering and line driving applications in embedded systems, industrial controllers, and communication equipment. Its high-speed AS logic family and strong drive capability make it ideal for address bus drivers in microprocessor systems and memory interfaces. It is also suitable for signal isolation and level restoration in backplane buses and multi-board digital systems.
Specifications
| Date Of Intro | 1986-01-01 |
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | AS |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.064A |
| 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 | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 24mA |
| Prop. Delay@Nom-Sup | 6.2ns |
| Propagation Delay (tpd) | 6.2ns |
| 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 | TTL |
| Temperature Grade | COMMERCIAL |
| 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 | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output drive capability of the SN74AS244ADW?
The SN74AS244ADW provides a maximum output sink current (IOL) of 64mA per output, making it suitable for driving heavy capacitive loads up to 50pF. This high drive capability enables reliable signal integrity in bus-oriented digital systems.
What logic family does the SN74AS244ADW belong to and what are its speed characteristics?
The SN74AS244ADW belongs to the Advanced Schottky (AS) logic family, introduced in 1986. AS-series devices offer high switching speeds compared to standard TTL, with reduced propagation delays, making them ideal for high-performance bus driver applications in microprocessor and memory systems.
What package type is the SN74AS244ADW available in?
The SN74AS244ADW is available in a 20-pin wide-body SOIC package (JESD-30 code R-PDSO-G20), which is suitable for surface-mount assembly. This package provides a compact footprint while maintaining thermal performance for typical digital logic applications.
What are common applications for the SN74AS244ADW?
Common applications include address and data bus buffering in microprocessor systems, memory interface line driving, signal isolation between PCB sections, and backplane bus driving in industrial and communication equipment. The active-low enable pins allow easy integration into bus arbitration designs.
Is the SN74AS244ADW RoHS compliant?
Yes, the SN74AS244ADW carries JESD-609 code e4, indicating it is manufactured with lead-free, RoHS-compliant materials. This makes it suitable for use in modern environmentally-regulated electronic products and systems.
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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+ | $5.7825 | $5.78 |
| 66+ | $4.5100 | $297.66 |
| 70+ | $2.5058 | $175.41 |
| 201+ | $2.3130 | $464.91 |
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