Overview
The 74HC194DB/DG118 is a 4-bit bidirectional universal shift register produced by NXP USA Inc. This integrated circuit is part of the 74HC series and is known for its versatility in handling both serial and parallel data transfer. The device operates within a wide supply voltage range of 2V to 6V and can function across a broad temperature range from -40°C to +125°C, making it suitable for various applications in different environmental conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Package / Case | 16-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ +125°C |
| Supply Voltage | 2V ~ 6V |
| Logic Type | CMOS |
| Number of Bits per Element | 4 |
| Number of Input Lines | 6 |
| Number of Output Lines | 4 |
| Propagation Delay Time | 14 ns (typical at VCC = 4.5V) |
| Function | Universal, Bidirectional Shift Register |
| Output Type | Push-Pull |
Key Features
- Synchronous Operation: The device operates synchronously based on mode select inputs (S0, S1), allowing for parallel load, serial shift left, serial shift right, and hold modes.
- Bidirectional Shift Capability: Data can be shifted in both left and right directions, enabling flexible data transfer.
- Asynchronous Master Reset: The device includes an asynchronous master reset (MR) that overrides all other input conditions and forces the Q outputs LOW.
- ESD Protection: The device features ESD protection, with HBM exceeding 2000 V and MM exceeding 200 V).
- Compliance with JEDEC Standards: The 74HC194 complies with JEDEC standard no. 7A).
Applications
The 74HC194DB/DG118 is versatile and can be used in a variety of applications, including:
- Data Processing and Storage: Its ability to handle both serial and parallel data makes it suitable for data processing and storage systems.
- Communication Systems: It can be used in communication systems where data needs to be shifted and processed efficiently.
- Control Systems: The device is useful in control systems that require synchronous and asynchronous data handling.
- Digital Circuits: It is commonly used in digital circuits that require bidirectional shift register functionality.
Q & A
- Q: What is the operating temperature range of the 74HC194DB/DG118?
A: The operating temperature range is from -40°C to +125°C.
- Q: What is the supply voltage range for this device?
A: The supply voltage range is from 2V to 6V.
- Q: What type of logic does the 74HC194DB/DG118 use?
A: The device uses CMOS logic.
- Q: How many bits can this shift register handle?
A: The device is a 4-bit bidirectional universal shift register.
- Q: What are the different modes of operation for this shift register?
A: The device can operate in parallel load, serial shift left, serial shift right, and hold modes based on the mode select inputs (S0, S1).
- Q: Does the 74HC194DB/DG118 have ESD protection?
A: Yes, the device features ESD protection with HBM exceeding 2000 V and MM exceeding 200 V.
- Q: What is the typical propagation delay time for this device?
A: The typical propagation delay time is 14 ns at VCC = 4.5V.
- Q: What is the package type for the 74HC194DB/DG118?
A: The device comes in a 16-SSOP (0.209", 5.30mm Width) package.
- Q: Is the 74HC194DB/DG118 suitable for surface mounting?
A: Yes, the device is designed for surface mount technology (SMT).
- Q: What is the output type of the 74HC194DB/DG118?
A: The output type is push-pull.
