Overview
The SN74HC166PWR is an 8-bit parallel-load shift register produced by Texas Instruments. This device is part of the HC166 series, known for its wide operating voltage range and low power consumption. It features a single serial input and eight parallel-load inputs, making it versatile for various digital circuit applications. The SN74HC166PWR is available in a TSSOP (Thin Shrink Small Outline Package) with 16 pins, offering a compact solution for modern electronic designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V |
| VIH High-Level Input Voltage (VCC = 2 V) | 1.5 | V | ||
| VIH High-Level Input Voltage (VCC = 4.5 V) | 3.15 | V | ||
| VIH High-Level Input Voltage (VCC = 6 V) | 4.2 | V | ||
| VIL Low-Level Input Voltage (VCC = 2 V) | 0.5 | V | ||
| VIL Low-Level Input Voltage (VCC = 4.5 V) | 1.35 | V | ||
| VIL Low-Level Input Voltage (VCC = 6 V) | 1.8 | V | ||
| ICC Quiescent Current (VI = VCC or 0, IO = 0) | 80 | 160 | μA | |
| tPD Propagation Delay (CLK to QH) | 75 | 150 | 225 | ns |
| fmax Maximum Clock Frequency | 25 | MHz |
Key Features
- Wide operating voltage range of 2 V to 6 V
- Outputs can drive up to 10 LSTTL loads
- Low power consumption, with a maximum ICC of 80 μA
- Typical propagation delay (tpd) of 13 ns
- ±4-mA output drive at 5 V
- Low input current of 1 μA max
- Synchronous load and direct overriding clear
- Parallel-to-serial conversion capability
Applications
The SN74HC166PWR is suitable for a variety of digital circuit applications, including:
- Serial-to-parallel data conversion
- Parallel-to-serial data conversion
- Shift register applications in digital systems
- Data storage and retrieval in digital circuits
- Control and sequencing circuits
Q & A
- What is the operating voltage range of the SN74HC166PWR?
The operating voltage range is from 2 V to 6 V.
- How many parallel-load inputs does the SN74HC166PWR have?
The device has eight parallel-load inputs.
- What is the maximum propagation delay (tpd) of the SN74HC166PWR?
The maximum propagation delay is 225 ns.
- Can the SN74HC166PWR drive LSTTL loads?
Yes, it can drive up to 10 LSTTL loads.
- What is the typical quiescent current (ICC) of the SN74HC166PWR?
The typical quiescent current is 80 μA.
- What is the maximum clock frequency for the SN74HC166PWR?
The maximum clock frequency is 25 MHz.
- Does the SN74HC166PWR have a direct overriding clear function?
Yes, it has a direct overriding clear function.
- What type of package is the SN74HC166PWR available in?
The SN74HC166PWR is available in a TSSOP (Thin Shrink Small Outline Package) with 16 pins.
- What is the junction temperature range for the SN74HC166PWR?
The junction temperature range is from -40°C to 85°C.
- Is the SN74HC166PWR RoHS compliant?
Yes, the SN74HC166PWR is RoHS compliant.
