SN74ABT2245DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN74ABT2245DWG4 is an 8-bit non-inverting bidirectional bus transceiver in the ABT logic family operating at 5 V in a 20-pin SOIC package. Features direction control, 50 pF load drive capability, and 64 mA sink current per output. Available worldwide with reliable supply.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ABT2245DWG4 Datasheet PDF
- Category
- Integrated Circuit
- 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 SN74ABT2245DWG4?
- 8-bit bidirectional non-inverting ABT bus transceiver with direction control enables high-speed 5 V bus interfacing between subsystems
- 64 mA output sink current and 50 pF load capacitance drive capability supports heavy bus loading in backplane and memory systems
- 20-pin SOIC package (R-PDSO-G20) offers a compact SMT footprint compatible with standard PCB assembly and high-volume manufacturing
What is SN74ABT2245DWG4 used for?
The SN74ABT2245DWG4 is used in 5 V data bus buffering applications such as memory address/data bus expansion, microprocessor-to-peripheral interfacing, and backplane bus driving where bidirectional 8-bit transfers at high speed are needed. It suits designs with heavy capacitive bus loads because its 64 mA sink current and ABT output structure maintain fast switching edges even at 50 pF load. Industrial control boards, network equipment, and legacy 5 V embedded systems commonly use this transceiver for board-to-board data isolation and signal conditioning.
What are the specifications of SN74ABT2245DWG4?
| YTEOL | 0 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | ABT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE WITH SERIES RESISTOR |
| 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) | 32mA |
| Prop. Delay@Nom-Sup | 4.5ns |
| Propagation Delay (tpd) | 4.5ns |
| 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 | BICMOS |
| Temperature Grade | INDUSTRIAL |
| 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 SN74ABT2245DWG4 datasheet?
SN74ABT2245DWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ABT2245DWG4?
Compatible alternatives and drop-in replacements for SN74ABT2245DWG4:
Bus Transceiver, ABT Series, 1-Func, 8-Bit, True Output, BICMOS, PDSO20
Frequently Asked Questions
What is the output sink current capability of SN74ABT2245DWG4 and why does it matter for bus loading?
The SN74ABT2245DWG4 can sink up to 64 mA per output at the VOL specification, and it handles 50 pF of load capacitance. This drive strength allows it to maintain fast signal edges on heavily loaded 5 V buses such as memory data lines and microprocessor expansion ports without signal degradation.
How does the direction control feature of SN74ABT2245DWG4 work in a bidirectional bus system?
The SN74ABT2245DWG4 has a dedicated direction control pin that determines whether the 8-bit data flows from the A port to the B port or vice versa. This common control applies to all 8 bits simultaneously, simplifying bus arbitration logic in 5 V microprocessor and memory interfacing designs.
In which legacy or industrial 5 V board designs is SN74ABT2245DWG4 still a preferred bus transceiver choice?
Industrial PLC backplane buses, VME/ISA legacy systems, and 5 V embedded control boards that require an 8-bit bidirectional buffer with 64 mA drive and ABT-speed switching frequently use SN74ABT2245DWG4. Its 20-pin SOIC format also fits space-constrained retrofit designs where through-hole alternatives are no longer practical.
What moisture sensitivity level does SN74ABT2245DWG4 carry and how should it be handled before SMT assembly?
The SN74ABT2245DWG4 carries a JESD-609 code of e4, indicating MSL 4. Devices must be used within 72 hours of opening the dry-pack bag at factory ambient conditions, or they must be baked at 125°C for at least 5 hours before SMT reflow assembly to prevent moisture-induced delamination.
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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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