Overview
The SN74AHCT574PWRG4 is an octal edge-triggered D-type flip-flop with 3-state outputs, manufactured by Texas Instruments. This device is designed to drive highly capacitive or relatively low-impedance loads, making it suitable for various applications such as buffer registers, IO ports, bidirectional bus drivers, and working registers. The flip-flops are triggered on the positive transition of the clock (CLK) input, and the outputs can be placed in a high-impedance state using the buffered output-enable (OE) input, which is useful for bus driving without the need for interface or pull-up components.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Pulse duration, LE high (tw) | ns | 5.5 | - | 5.5 |
| Setup time, data before LE↓ (tsu) | ns | 3.5 | - | 3.5 |
| Hold time, data after LE↓ (th) | ns | 1.5 | - | 1.5 |
| Maximum clock frequency (fmax) at CL = 15 pF | MHz | 110 | - | 180 |
| Propagation delay time, CLK to Q (tPLH) at CL = 15 pF | ns | 5.5 | 8.6 | 11 |
| Junction-to-ambient thermal resistance (RθJA) | °C/W | - | - | 116.8 |
| Operating temperature range (TA) | °C | -40 | - | 125 |
Key Features
- TTL-voltage compatible inputs, allowing for translation from 3.3 V to 5 V logic levels.
- 3-state outputs, which can be set to a high-impedance state, reducing the need for interface or pull-up components.
- Slow edges reduce output ringing, improving signal integrity.
- Edge-triggered D-type flip-flops, triggered on the positive transition of the clock (CLK) input.
- Suitable for driving highly capacitive or relatively low-impedance loads.
Applications
- Buffer registers
- IO ports
- Bidirectional bus drivers
- Working registers
- General-purpose logic circuits requiring edge-triggered flip-flops with 3-state outputs.
Q & A
- What is the SN74AHCT574PWRG4? The SN74AHCT574PWRG4 is an octal edge-triggered D-type flip-flop with 3-state outputs, manufactured by Texas Instruments.
- What are the key applications of the SN74AHCT574PWRG4? It is used in buffer registers, IO ports, bidirectional bus drivers, and working registers.
- What is the operating temperature range of the SN74AHCT574PWRG4? The operating temperature range is from -40°C to 125°C.
- What is the maximum clock frequency of the SN74AHCT574PWRG4? The maximum clock frequency is up to 180 MHz at a load capacitance of 15 pF.
- What type of inputs does the SN74AHCT574PWRG4 have? The device has TTL-voltage compatible inputs.
- How do the 3-state outputs of the SN74AHCT574PWRG4 work? The 3-state outputs can be set to a high-impedance state, reducing the need for interface or pull-up components.
- What package type is the SN74AHCT574PWRG4 available in? It is available in a TSSOP (PW) package with 20 pins.
- What is the junction-to-ambient thermal resistance of the SN74AHCT574PWRG4? The junction-to-ambient thermal resistance is 116.8°C/W.
- How does the slow edge feature benefit the SN74AHCT574PWRG4? The slow edges reduce output ringing, improving signal integrity.
- What is the setup time for data before the LE input goes low? The setup time is 3.5 ns.
