Overview
The SN74AC74DBR is a dual positive-edge-triggered D-type flip-flop integrated circuit produced by Texas Instruments. This device is part of the 74AC series, known for its high-speed and low-power consumption. It operates within a voltage range of 2V to 6V, making it versatile for various digital circuit applications. The SN74AC74DBR is available in a 14-pin SSOP (Shrink Small Outline Package) package, which is compact and suitable for space-constrained designs.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| VCC (Supply Voltage) | V | 2 | 6 | |
| VIH (High-level Input Voltage) at VCC = 5V | V | 3.85 | 3.85 | |
| VIL (Low-level Input Voltage) at VCC = 5V | V | 1.65 | 1.65 | |
| IOH (High-level Output Current) at VCC = 5V | mA | -12 | -12 | |
| fclock (Clock Frequency) at VCC = 5V | MHz | 95 | 125 | 140 |
| tpd (Propagation Delay) at VCC = 5V | ns | 3.5 | 6 | 10 |
| tsu (Setup Time, Data before CLK↑) at VCC = 5V | ns | 3 | 4 | |
| th (Hold Time, Data after CLK↑) at VCC = 5V | ns | 0.5 | 0.5 | |
| TJ (Junction Temperature) | °C | -40 | 85 |
Key Features
- Dual positive-edge-triggered D-type flip-flops.
- Operates over a wide voltage range of 2V to 6V.
- High-speed operation with a maximum clock frequency of up to 140 MHz at VCC = 5V.
- Low power consumption.
- Available in 14-pin SSOP package, suitable for compact designs.
- Inputs accept voltages up to 6V.
- Active low clear and preset inputs.
- Complementary outputs (Q and Q).
Applications
- Digital counters and dividers.
- Shift registers and data storage.
- Sequential logic circuits.
- Timing and control circuits.
- General-purpose digital logic applications.
Q & A
- What is the voltage range for the SN74AC74DBR?
The SN74AC74DBR operates within a voltage range of 2V to 6V.
- What is the maximum clock frequency for the SN74AC74DBR at VCC = 5V?
The maximum clock frequency is up to 140 MHz at VCC = 5V.
- What type of package is the SN74AC74DBR available in?
The SN74AC74DBR is available in a 14-pin SSOP (Shrink Small Outline Package) package.
- What are the input voltage levels for the SN74AC74DBR?
The high-level input voltage (VIH) is 3.85V and the low-level input voltage (VIL) is 1.65V at VCC = 5V.
- What is the propagation delay of the SN74AC74DBR at VCC = 5V?
The propagation delay (tpd) ranges from 3.5 ns to 10 ns at VCC = 5V.
- What are the setup and hold times for the SN74AC74DBR?
The setup time (tsu) is 3 ns to 4 ns, and the hold time (th) is 0.5 ns at VCC = 5V.
- What is the junction temperature range for the SN74AC74DBR?
The junction temperature range is from -40°C to 85°C.
- What are the typical applications of the SN74AC74DBR?
Typical applications include digital counters, shift registers, sequential logic circuits, timing and control circuits, and general-purpose digital logic.
- How should the power supply be configured for the SN74AC74DBR?
The power supply should be any voltage between the minimum and maximum supply voltage rating, with a good bypass capacitor to prevent power disturbance. A 0.1-μF capacitor is recommended.
- What precautions should be taken when handling the SN74AC74DBR?
The device can be damaged by ESD, so it should be handled with appropriate precautions.
