SN74ALS273NS Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74ALS273NS is an octal D-type flip-flop with clear from Texas Instruments ALS logic family in SOIC-20 package. Features 8 edge-triggered D flip-flops with active-low master reset and TTL-compatible operation. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SN74ALS273NS Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal D-type flip-flop with 8 independent storage elements and single-pin master clear reset
- ALS (Advanced Low-power Schottky) family provides fast switching speed with reduced power consumption
- Edge-triggered positive-clock D flip-flops for reliable synchronous data storage and register applications
- SOIC-20 surface-mount package provides compact form factor for high-density PCB designs
Applications
The SN74ALS273NS octal D flip-flop is used for data storage, address latching, and pipeline register applications in microprocessor interface circuits and digital control systems. Its 8-bit width and master clear function make it ideal for output port registers, data bus latches, and state machine registers in embedded system designs. The device is widely employed in industrial automation, test equipment, and legacy digital systems requiring reliable synchronous data capture and storage.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74ALS273NS:
D Flip-Flop, ALS Series, 8-Func, Positive Edge Triggered, 8-Bit, True Output, TTL, PDSO20
D Flip-Flop, ALS Series, 8-Func, Positive Edge Triggered, 8-Bit, True Output, TTL, PDSO20
Frequently Asked Questions
How many flip-flops does the SN74ALS273NS contain?
The SN74ALS273NS contains 8 positive-edge-triggered D-type flip-flops in a single 20-pin SOIC package. All 8 flip-flops share a common clock input and active-low master clear (CLR) pin, making the device suitable for 8-bit register and data latch applications.
What is the clear function in the SN74ALS273NS?
The SN74ALS273NS has an active-low asynchronous master clear input that resets all 8 flip-flop outputs to logic low (0) regardless of clock state. This allows the entire 8-bit register to be cleared instantly upon system power-up or during error recovery, without waiting for a clock edge.
What logic family is the SN74ALS273NS from?
The SN74ALS273NS belongs to the ALS (Advanced Low-power Schottky) logic family, which was developed as an improvement over the original LS (Low-power Schottky) family. ALS devices offer approximately twice the speed of LS logic while consuming less power, with propagation delays typically around 7-10 ns.
What package is the SN74ALS273NS in?
The SN74ALS273NS is packaged in a 20-pin SOIC (Small Outline Integrated Circuit) surface-mount package, indicated by the 'NS' suffix. The SOIC-20 has a 1.27mm pin pitch and is a standard footprint used across many logic IC families, enabling easy substitution with equivalent parts.
Can the SN74ALS273NS be used as an output port register for a microcontroller?
Yes, the SN74ALS273NS is ideal as an output port register for microcontrollers and microprocessors. Its 8 D flip-flops can latch 8-bit data bus values on a clock edge and hold that value stable at the outputs, allowing the processor to perform other operations while the output data remains constant for peripheral devices.
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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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