SN74ALS273DWRIn StockTexas Instruments
The SN74ALS273DWR is an octal D-type positive-edge-triggered flip-flop IC with clear, featuring 35 MHz max frequency, 50 pF load capacitance, and 8-bit parallel storage. From $0.30 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74ALS273DWR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2992(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) D-type positive-edge-triggered flip-flops with active-low asynchronous clear for simultaneous reset of all outputs
- High-speed ALS logic family with 35 MHz maximum operating frequency, ideal for demanding digital signal processing applications
- 20-pin SOIC (R-PDSO-G20) package with 24 mA output sink current and 50 pF load capacitance for robust drive capability
- Pb-free (e4) compliant construction meeting JESD-609 environmental standards for modern RoHS-compliant designs
Applications
The SN74ALS273DWR is widely used in microprocessor bus interfacing and data buffering applications where reliable 8-bit parallel data latching is required. It is commonly employed in address/data bus registers, memory interface circuits, and I/O port expansion in embedded systems. Its high-speed ALS logic and SOIC packaging also make it suitable for industrial control boards and programmable logic controller (PLC) designs requiring compact, noise-immune flip-flop arrays.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | ALS |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 35000000Hz |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| 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) | 29mA |
| Prop. Delay@Nom-Sup | 15ns |
| Propagation Delay (tpd) | 15ns |
| 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 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 70MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| 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 maximum operating frequency of the SN74ALS273DWR?
The SN74ALS273DWR supports a maximum clock frequency of 35 MHz at nominal supply voltage, making it suitable for high-speed digital logic designs. Its ALS (Advanced Low-power Schottky) technology ensures fast propagation delays while maintaining low power consumption compared to standard TTL devices.
How does the clear function work on the SN74ALS273DWR?
The SN74ALS273DWR features an active-low asynchronous clear (CLR) input that resets all eight flip-flop outputs (Q0–Q7) to logic LOW simultaneously, independent of the clock signal. This allows instantaneous system initialization or fault recovery without waiting for a clock edge, which is critical in safety-sensitive embedded control applications.
What are the typical applications for the SN74ALS273DWR?
This device is commonly used in microprocessor address and data bus registers, memory interface latches, I/O port expansion circuits, and industrial control systems. Its 8-bit parallel storage capability and 35 MHz speed make it ideal for data pipeline stages in digital boards requiring synchronized, high-speed storage of parallel data words.
What package does the SN74ALS273DWR come in and what are its key dimensions?
The SN74ALS273DWR comes in a 20-pin Wide Small Outline Package (SOIC/DWR, JESD-30 code R-PDSO-G20), which offers a compact PCB footprint suitable for space-constrained designs. The wide-body SOIC package provides good thermal performance and is compatible with standard SMT assembly processes, simplifying board manufacturing.
Is the SN74ALS273DWR RoHS compliant?
Yes, the SN74ALS273DWR is Pb-free and carries the JESD-609 code e4, confirming full RoHS compliance. Texas Instruments designates this part with a Pbfree Code of 'Yes,' making it suitable for use in environmentally regulated markets in Europe, Asia, and beyond without any special exemptions.
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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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