Overview
The SN74AC74PW is a dual positive-edge-triggered D-type flip-flop produced by Texas Instruments. This component is part of the 74AC series, known for its high-speed and low-power consumption. The device operates within a voltage range of 2V to 6V, making it versatile for various digital circuit applications. Each flip-flop has a clear (CLR) and preset (PRE) input, allowing for flexible control over the output states. The SN74AC74PW is packaged in a 14-pin TSSOP (Thin Shrink Small Outline Package), which is compact and suitable for modern electronic designs.
Key Specifications
| Parameter | Condition | Min | Max | Unit | |
|---|---|---|---|---|---|
| VCC Operating Voltage | 2 | 6 | V | ||
| Clock Frequency (VCC = 3.3V) | 100 | 125 | 70 | MHz | |
| Clock Frequency (VCC = 5V) | 140 | 160 | 95 | MHz | |
| Setup Time (Data before CLK↑, VCC = 3.3V) | 4 | 5 | ns | ||
| Setup Time (Data before CLK↑, VCC = 5V) | 3 | 4 | ns | ||
| Hold Time (Data after CLK↑, VCC = 3.3V/5V) | 0.5 | 0.5 | ns | ||
| Propagation Delay (CLK to Q, VCC = 3.3V) | 4.5 | 13.5 | ns | ||
| Propagation Delay (CLK to Q, VCC = 5V) | 3.5 | 10 | ns | ||
| Operating Temperature Range | -40 | 85 | °C | ||
| Package Type | TSSOP (14 pins) |
Key Features
- Dual positive-edge-triggered D-type flip-flops
- Operates over a wide voltage range of 2V to 6V
- Inputs accept voltages up to 6V
- Maximum propagation delay of 10 ns at 5V
- Low power consumption
- Clear (CLR) and preset (PRE) inputs for each flip-flop
- Available in various packages including TSSOP, SOIC, SSOP, PDIP, and SOP
Applications
The SN74AC74PW is suitable for a variety of digital circuit applications, including:
- Counters and dividers
- Shift registers
- Memory elements in digital systems
- Timing and control circuits
- General-purpose logic circuits
Q & A
- What is the operating voltage range of the SN74AC74PW?
The SN74AC74PW operates over a voltage range of 2V to 6V.
- What is the maximum clock frequency for the SN74AC74PW at 3.3V and 5V VCC?
The maximum clock frequency is 100 MHz at 3.3V VCC and 140 MHz at 5V VCC.
- What are the setup and hold times for the SN74AC74PW?
The setup time is 4 ns at 3.3V and 3 ns at 5V. The hold time is 0.5 ns for both 3.3V and 5V.
- What is the propagation delay from CLK to Q?
The propagation delay from CLK to Q is 4.5 ns to 13.5 ns at 3.3V and 3.5 ns to 10 ns at 5V.
- What are the package options available for the SN74AC74?
The SN74AC74 is available in TSSOP, SOIC, SSOP, PDIP, and SOP packages.
- What is the operating temperature range of the SN74AC74PW?
The operating temperature range is -40°C to 85°C.
- Does the SN74AC74PW have clear and preset inputs?
Yes, each flip-flop has clear (CLR) and preset (PRE) inputs.
- What are some common applications of the SN74AC74PW?
Common applications include counters, shift registers, memory elements, timing and control circuits, and general-purpose logic circuits.
- Is the SN74AC74PW suitable for high-speed applications?
Yes, the SN74AC74PW is designed for high-speed applications with low propagation delays.
- What is the power consumption of the SN74AC74PW?
The SN74AC74PW has low power consumption, with ICC typically around 20 µA at 5V.
