Overview
The 74LVC595AD, produced by Nexperia USA Inc., is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs. This device is designed to operate in a wide range of voltage levels, from 1.2 V to 5.5 V, making it suitable for mixed 3.3 V and 5 V environments. It features separate clocks for both the shift and storage registers, enabling flexible data transfer and storage. The device includes a serial input (DS) and a serial output (Q7S) for cascading, as well as an asynchronous reset input (MR) and an output enable input (OE) to control the output states.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | 1.2 | - | 5.5 | V |
| Logic Switching Levels | CMOS/LVTTL | - | - | - |
| Output Drive Capability | - | - | ±24 | mA |
| tpd (Propagation Delay) | - | - | 4.0 | ns |
| fmax (Maximum Frequency) | - | - | 180 | MHz |
| Number of Bits | - | - | 8 | - |
| Power Dissipation Considerations | - | - | Low | - |
| Tamb (Ambient Temperature) | -40 | - | 125 | °C |
| Package Name | - | - | SO16 (SOT109-1) | - |
Key Features
- 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs.
- Separate clocks for shift and storage registers.
- Serial input (DS) and serial output (Q7S) for cascading.
- Asynchronous reset input (MR) to reset the shift register.
- Output enable input (OE) to control the output states.
- Inputs can be driven from either 3.3 V or 5 V devices, suitable for mixed voltage environments.
- Fully specified for partial Power-down applications using IOFF circuitry.
- Low power dissipation and high-impedance OFF-state outputs.
Applications
The 74LVC595AD is versatile and can be used in a variety of applications across different industries, including:
- Automotive systems: For data transfer and storage in automotive electronics.
- Industrial control systems: For serial data processing and output control.
- Consumer electronics: In devices requiring serial data handling and storage.
- Mobile and wearable devices: For efficient data transfer in low-power environments.
- Computing and networking: For serial data communication and storage in computing systems.
Q & A
- What is the primary function of the 74LVC595AD?
The 74LVC595AD is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs.
- What is the voltage range for the 74LVC595AD?
The device operates within a voltage range of 1.2 V to 5.5 V.
- Can the 74LVC595AD be used in mixed voltage environments?
- How does the asynchronous reset input (MR) function?
A LOW on the MR input resets the shift register.
- What is the purpose of the output enable input (OE)?
The OE input controls the output states; a LOW on OE enables the outputs, while a HIGH causes the outputs to assume a high-impedance OFF-state.
- What are the key features of the IOFF circuitry in the 74LVC595AD?
The IOFF circuitry disables the output, preventing damaging backflow current through the device when it is powered down.
- What is the maximum frequency of operation for the 74LVC595AD?
The maximum frequency of operation is up to 180 MHz.
- What is the ambient temperature range for the 74LVC595AD?
The device operates within an ambient temperature range of -40°C to +125°C.
- In what package types is the 74LVC595AD available?
The device is available in SO16 (SOT109-1), TSSOP16, and DHVQFN16 packages.
- What are some common applications for the 74LVC595AD?
The device is used in automotive, industrial, consumer electronics, mobile, and computing applications.
