SN74ALS1245ADW Texas Instruments Integrated Circuit (Other) In Stock
SN74ALS1245ADW is an octal bus transceiver with 3-state outputs and direction control, featuring bidirectional data flow, 50pF load capacitance, and ALS logic family. From $2.86, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS1245ADW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.8600(MOQ 67)
- 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 SN74ALS1245ADW?
- Bidirectional octal bus transceiver with common direction control for flexible data flow management
- Advanced Low-power Schottky (ALS) logic family for optimal speed-power balance in bus interface applications
- 3-state outputs enable easy bus sharing and high-impedance mode for multi-master designs
- 50pF load capacitance rating supports reliable operation in high-capacitance bus environments
- 20-pin SOIC (R-PDSO-G20) package with lead-free (Pb-free) compliance for modern PCB assembly
What is SN74ALS1245ADW used for?
The SN74ALS1245ADW is widely used in microprocessor and microcontroller bus interface designs where bidirectional data transfer between two buses is required. It is ideal for memory systems, backplane bus drivers, and data communication equipment that need controlled, high-drive 8-bit data paths. Industrial control systems and embedded computing platforms also rely on this device to isolate and buffer bidirectional data lines with low propagation delay.
What are the specifications of SN74ALS1245ADW?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON 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) | 0.016A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| 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) | 33mA |
| Prop. Delay@Nom-Sup | 13ns |
| Propagation Delay (tpd) | 13ns |
| 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 | Other |
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 SN74ALS1245ADW datasheet?
SN74ALS1245ADW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS1245ADW?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the direction control mechanism of the SN74ALS1245ADW?
The SN74ALS1245ADW uses a common DIR pin to control data flow direction across all 8 channels simultaneously. When DIR is HIGH, data flows from the B port to the A port; when DIR is LOW, data flows from A to B. An active-LOW Output Enable (OE) pin places all outputs in a high-impedance 3-state condition when deasserted, allowing multiple transceivers to share the same bus.
What are the key electrical specifications of the SN74ALS1245ADW?
The SN74ALS1245ADW operates on a 5V supply and belongs to the ALS (Advanced Low-power Schottky) logic family. It features a rated load capacitance of 50pF, typical propagation delay of around 5–8ns, and IOH/IOL output drive current of ±15mA. These specs make it suitable for high-speed bus buffering in TTL-compatible systems.
What package does the SN74ALS1245ADW come in and is it RoHS compliant?
The SN74ALS1245ADW is housed in a 20-pin wide-body SOIC package (JESD-30 code R-PDSO-G20), which is a surface-mount package suitable for automated PCB assembly. It is Pb-free (lead-free) and carries the JESD-609 e4 designation, confirming RoHS compliance for use in environmentally regulated applications.
What are common applications for the SN74ALS1245ADW?
This device is commonly used in microprocessor system bus interfaces, memory bank switching circuits, industrial I/O expansion boards, and backplane data buffering. Its bidirectional capability and 3-state outputs make it ideal anywhere two data buses must communicate under controlled conditions, such as between a CPU data bus and peripheral expansion logic.
What are suitable pin-compatible or functional alternatives to the SN74ALS1245ADW?
Functional alternatives include the SN74ABT245, SN74HC245, and SN74BCT245 series from Texas Instruments, which offer similar 8-bit bidirectional transceiver functionality with varying logic families and speed grades. For drop-in SOIC 20-pin replacements, the 74ALS245 from other manufacturers such as ON Semiconductor or NXP may also be compatible, though users should verify timing and drive strength specifications before substitution.
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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
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| 150+ | $2.8956 | $434.34 |
| 10000+ | $2.8600 | $28600.00 |
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