Overview
The 74HCT165DB,112 is an 8-bit serial or parallel-in/serial-out shift register produced by Nexperia USA Inc. This component is part of the 74HCT165 series, which is designed to operate with TTL (Transistor-Transistor Logic) input levels. The device is versatile, allowing for both parallel and serial data input and output, making it suitable for a variety of digital circuit applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 4.5 | 5.0 | 5.5 | V |
| VI Input Voltage | 0 | - | VCC | V |
| VO Output Voltage | 0 | - | VCC | V |
| Tamb Ambient Temperature | -40 | - | 125 | °C |
| VIH HIGH-level Input Voltage | 3.15 | 2.4 | 3.15 | V |
| VIL LOW-level Input Voltage | 1.35 | 1.35 | 1.35 | V |
| IO Output Current | -20 | - | 4.0 | mA |
| CI Input Capacitance | - | - | 3.5 | pF |
| Package Type | - | - | Dual in-line package (DIP) or SO16/SOT109-1 | - |
Key Features
- Asynchronous 8-bit parallel load: Data from D0 to D7 can be loaded into the shift register asynchronously when the parallel load input (PL) is LOW.
- Synchronous serial input: Data enters the register serially at the DS input when PL is HIGH.
- Complementary serial outputs: The device features two complementary serial outputs (Q7 and Q7).
- Input levels: Complies with TTL input levels for the 74HCT165 series.
- ESD protection: High ESD protection with HBM JESD22-A114F exceeding 2000 V and MM JESD22-A115-A exceeding 200 V.
- Overvoltage tolerance: Inputs are overvoltage tolerant up to 15 V, enabling use in level shifting applications.
- Operating temperature range: Specified from -40 °C to +125 °C.
Applications
- Parallel-to-serial data conversion: Ideal for converting parallel data into a serial format, which is useful in various digital communication systems.
- Digital circuit design: Suitable for use in a wide range of digital circuits requiring data shifting and storage.
- Level shifting applications: The overvoltage tolerance makes it suitable for HIGH-to-LOW level shifting applications.
Q & A
- What is the primary function of the 74HCT165DB,112?
The primary function is to act as an 8-bit serial or parallel-in/serial-out shift register.
- What are the input levels for the 74HCT165 series?
The input levels comply with TTL (Transistor-Transistor Logic) standards.
- How does the parallel load input (PL) affect the shift register?
When PL is LOW, data from D0 to D7 is loaded into the shift register asynchronously. When PL is HIGH, data enters the register serially at the DS input.
- What is the operating temperature range of the 74HCT165DB,112?
The device operates from -40 °C to +125 °C.
- Does the 74HCT165DB,112 have ESD protection?
Yes, it has high ESD protection with HBM JESD22-A114F exceeding 2000 V and MM JESD22-A115-A exceeding 200 V.
- What is the package type for the 74HCT165DB,112?
The package types include DIP (Dual in-line package) or SO16/SOT109-1.
- Can the 74HCT165DB,112 be used in level shifting applications?
Yes, the inputs are overvoltage tolerant up to 15 V, making it suitable for HIGH-to-LOW level shifting applications.
- What are the complementary serial outputs of the 74HCT165DB,112?
The device features two complementary serial outputs (Q7 and Q7).
- How does the clock enable input (CE) affect the shift register?
When CE is LOW, data is shifted on the LOW-to-HIGH transitions of the CP input. A HIGH on CE will disable the CP input.
- Is the 74HCT165DB,112 RoHS compliant?
Yes, the device is RoHS compliant.
