SN74ALS621ADWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74ALS621ADWG4 is an 8-bit non-inverting bus transceiver from Texas Instruments in the ALS logic family, operating at 5V with independent control for bidirectional data transfer. It supports up to 24mA output sink current with 50pF load capacitance in a 20-pin SOIC package. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS621ADWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74ALS621ADWG4?
- 8-bit bidirectional non-inverting bus transceiver with independent control enabling flexible data bus management between two logic buses
- ALS (Advanced Low-power Schottky) family offering improved speed and lower power compared to standard LS logic for high-frequency bus applications
- 24mA maximum output sink current supporting standard TTL bus loads and driving multiple downstream devices
- 20-pin SOIC package with standard footprint facilitating easy PCB layout and compatibility with industry-standard bus interface designs
What is SN74ALS621ADWG4 used for?
The SN74ALS621ADWG4 is used for bidirectional data bus buffering and signal level management between processors, memory, and peripheral devices in embedded systems and industrial controllers. It is commonly deployed in backplane bus interfaces and multi-board communication architectures where independent direction control and robust drive capability are required. The device is also found in legacy system upgrades and test equipment where ALS-family compatibility and 5V TTL logic levels are specified.
What are the specifications of SN74ALS621ADWG4?
| YTEOL | 0 |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | ALS |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | OPEN-COLLECTOR |
| 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) | 48mA |
| Prop. Delay@Nom-Sup | 33ns |
| Propagation Delay (tpd) | 33ns |
| 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 |
| 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 |
Where can I find the SN74ALS621ADWG4 datasheet?
SN74ALS621ADWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS621ADWG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which designs are a good fit for SN74ALS621ADWG4 from Texas Instruments?
SN74ALS621ADWG4 fits embedded electronics, industrial controls, instrumentation, and production repair builds that need 74A. Engineers should also check 621A and the manufacturer datasheet before releasing the final PCB, module, or power tree.
How should engineers review assembly risk for SN74ALS621ADWG4?
Use the listed Small Outline Packages information together with 621A when checking PCB footprint, thermal clearance, solder process, and second-source constraints for at least 1 approved production build.
What should procurement confirm before ordering SN74ALS621ADWG4?
Confirm lifecycle status, traceability, and lot availability, then compare the required 8-bit against the approved BOM so sourcing does not substitute an incompatible part during 1 purchasing cycle.
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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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