Overview
The SN74LS166ADR is an 8-bit parallel-in or serial-in, serial-out shift register produced by Texas Instruments. This component is part of the 74LS series, known for its low power consumption and compatibility with most other TTL logic families. It is designed for use in a variety of digital circuits where data needs to be shifted or stored in a sequential manner.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | SN74LS166ADR |
| Manufacturer | Texas Instruments |
| Description | Parallel-Load 8-Bit Shift Register |
| Package / Case | 16-SOIC (0.154, 3.90mm Width) |
| Number of Pins | 16 |
| Operating Temperature | 0°C ~ 70°C |
| Supply Voltage | 4.75V ~ 5.25V |
| Propagation Delay | 25 ns |
| Turn On Delay Time | 30 ns |
| Logic Function | Shift Register, OR |
| Direction | Unidirectional |
| Trigger Type | Positive Edge |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Lead Free |
Key Features
- Synchronous Load and Direct Overriding Clear: The shift register features synchronous loading and a direct overriding clear input that sets all flip-flops to zero, regardless of other inputs.
- Parallel to Serial Conversion: It can operate in both parallel-in and serial-in modes, allowing for flexible data input and output configurations.
- Gated Clock Inputs: The clock inputs are gated, allowing for clock-enable or clock-inhibit functions, which can stop the register on command.
- Buffered Inputs: All inputs are buffered to lower drive requirements, minimizing switching transients and simplifying system design.
- Compatibility: Compatible with most other TTL logic families, making it versatile for various digital circuits.
Applications
The SN74LS166ADR is suitable for a wide range of applications, including:
- Digital Data Storage and Shifting: Ideal for systems that require sequential data storage and shifting, such as in digital counters, shift registers, and data buffers.
- Communication Systems: Used in communication systems for serial data transmission and reception.
- Control Systems: Employed in control systems where data needs to be processed sequentially.
- Computing and Embedded Systems: Useful in computing and embedded systems for managing data streams.
Q & A
- What is the primary function of the SN74LS166ADR?
The primary function is to act as an 8-bit parallel-in or serial-in, serial-out shift register. - What is the operating temperature range of the SN74LS166ADR?
The operating temperature range is 0°C to 70°C. - What is the supply voltage range for the SN74LS166ADR?
The supply voltage range is 4.75V to 5.25V. - What type of trigger does the SN74LS166ADR use?
The trigger type is positive edge. - Is the SN74LS166ADR RoHS compliant?
Yes, it is ROHS3 compliant. - What is the propagation delay of the SN74LS166ADR?
The propagation delay is 25 ns. - Can the SN74LS166ADR be stopped on command?
Yes, it can be stopped using the clock inhibit input. - What is the package type of the SN74LS166ADR?
The package type is 16-SOIC. - Is the SN74LS166ADR lead-free?
Yes, it is lead-free. - What logic function does the SN74LS166ADR perform?
The logic function includes shift register and OR operations. - How many equivalent gates does the SN74LS166ADR contain?
The complexity is equivalent to 77 gates on a monolithic chip.
