Overview
The SN74LV165A device, produced by Texas Instruments, is a parallel-load, 8-bit shift register designed for operation within a voltage range of 2 V to 5.5 V. This device is suitable for applications requiring serial or parallel data transfer and is fully specified for partial-power-down operations. The SN74LV165A features a clock-inhibit function and a complemented serial output, making it versatile for various digital circuit designs. Although the SN74LV165APWT is marked as obsolete, it remains relevant for existing designs and educational purposes.
Key Specifications
| Specification | Value |
|---|---|
| Function | Parallel or Serial to Serial |
| Logic Type | Shift Register |
| Number of Bits per Element | 8 |
| Number of Elements | 1 |
| Output Type | Complementary |
| Package | 16-TSSOP (0.173", 4.40mm Width) |
| Operating Temperature | -40°C to 125°C |
| Voltage - Supply | 2 V ~ 5.5 V |
| Maximum tpd at 5 V | 10.5 ns |
| Maximum Frequency at 5 V | 110 MHz (CL = 15 pF) |
Key Features
- VCC operation of 2 V to 5.5 V, making it suitable for a wide range of applications.
- Maximum propagation delay (tpd) of 10.5 ns at 5 V, ensuring high-speed data transfer.
- Support for mixed-mode voltage operation on all ports, enhancing flexibility in system design.
- Ioff circuitry supports partial-power-down mode operation, reducing power consumption and preventing backflow currents.
- Latch-up performance exceeds 250 mA per JESD 17, ensuring robust operation under various conditions.
- Clock-inhibit function and complemented serial output (QH), providing additional control and output options.
Applications
- Increasing the number of inputs on a microcontroller by using the shift register to serialize data from multiple parallel inputs.
- Serial communication systems where data needs to be converted from parallel to serial format.
- Digital circuit designs requiring high-speed data transfer and low power consumption.
- Partial-power-down applications where power management is critical).
Q & A
- What is the primary function of the SN74LV165A device?
The SN74LV165A is a parallel-load, 8-bit shift register designed to shift data from parallel inputs to a serial output.
- What is the voltage range for the SN74LV165A?
The device operates within a voltage range of 2 V to 5.5 V.
- What is the maximum propagation delay (tpd) at 5 V for the SN74LV165A?
The maximum propagation delay is 10.5 ns at 5 V.
- Does the SN74LV165A support partial-power-down mode?
- What is the operating temperature range for the SN74LV165A?
The operating temperature range is -40°C to 125°C.
- What package types are available for the SN74LV165A?
The device is available in several package types, including 16-TSSOP, SOIC, SSOP, and others.
- Does the SN74LV165A have a clock-inhibit function?
- How does the Ioff circuitry work in the SN74LV165A?
The Ioff circuitry disables the outputs when the device is powered down, preventing damaging current backflow.
- What are some common applications of the SN74LV165A?
- Is the SN74LV165APWT still in production?
