74194 IC 4-Bit Bidirectional Universal Shift Register
A 4-bit bidirectional universal shift register with parallel I/O, synchronous shifting in both directions, and a direct clear function.
20.00 EGP
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The 74LS194 is a monolithic integrated circuit representing a 4-bit bidirectional universal shift register. It is engineered to be a highly versatile component, incorporating a comprehensive set of features that cater to the complex needs of digital system design. Its primary role is to store and move data in a flexible manner, operating on four bits of information simultaneously. The “universal” aspect of its design signifies its ability to handle multiple data movement operations, making it a fundamental building block for various digital logic systems beyond a simple storage register.
This device’s key characteristic is its four distinct modes of operation, which are selected through two mode control inputs. It can perform a synchronous parallel load, where all four data bits are entered at once. Additionally, it can shift data synchronously to the right or to the left, with a dedicated serial input for each direction. The fourth mode inhibits the clock, effectively pausing all operations and maintaining the current data. This multi-mode capability allows it to replace several less-featured components in a design.
Operation is governed by a positive edge-triggered clock, ensuring that all actions are synchronized to a single, precise moment in time. The register also includes a direct overriding clear line, which, when activated, immediately and asynchronously resets all outputs to a low state, regardless of the other input conditions. This combination of synchronous data handling for shifts and loads with an asynchronous clear provides designers with both precise control and an immediate reset capability.
Features:
- Parallel Inputs and Outputs
- Four Operating Modes: Synchronous Parallel Load, Right Shift, Left Shift, and Inhibit Clock (Do Nothing)
- Positive Edge-Triggered Clocking
- Direct Overriding Clear
- Right-Shift and Left-Shift Serial Inputs
Specifications:
| Product Attribute | Attribute Value |
| Product Category: | Counter Shift Registers |
| Counting Sequence: | Serial/Parallel to Parallel |
| Number of Circuits: | 1 |
| Number of Bits: | 4 bit |
| Package/Case: | PDIP-16 |
| Logic Family: | 74LS |
| Logic Type: | Bipolar |
| Number of Input Lines: | 2 / 1 |
| Propagation Delay Time: | 26 ns |
| Supply Voltage – Max: | 5.25 V |
| Minimum Operating Temperature: | 0 C |
| Maximum Operating Temperature: | + 70 C |
| Packaging: | Tube |
| Function: | Shift Register |
| Mounting Style: | Through Hole |
| Number of Output Lines: | 1 |
| Operating Supply Voltage: | 4.75 V to 5.25 V |
| Operating Temperature Range: | 0 C to + 70 C |
| Product Type: | Counter Shift Registers |
Applications:
- Data Shifting and Storage.
- Serial-to-Parallel Conversion.
- Parallel-to-Serial Conversion.
- Ring Counters.
- Sequence Generators.
Package Contents:
- 1x 74194 IC 4-Bit Bidirectional Universal Shift Register
Datasheet
