Overview
The SN74AHCT574PW, produced by Texas Instruments, is an octal edge-triggered D-type flip-flop integrated circuit with 3-state outputs. 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 edge of the clock input, and the outputs can be placed in a high-impedance state using the output-enable (OE) input, which is beneficial for bus driving without the need for interface or pull-up components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 20-TSSOP (0.173", 4.40mm Width) | |
| Function | D-Type Flip-Flop | |
| Output Type | Tri-State, Non-Inverted | |
| Number of Bits per Element | 8 | |
| Clock Frequency | 115 MHz | |
| Max Propagation Delay @ V, Max CL | 10.6 ns @ 5V, 50pF | |
| Trigger Type | Positive Edge | |
| Current - Output High, Low | 8 mA, 8 mA | |
| Voltage - Supply | 4.5 V ~ 5.5 V | |
| Current - Quiescent (Iq) | 4 µA | |
| Input Capacitance | 3 pF | |
| Operating Temperature | -40°C ~ 85°C (TA) | |
| Mounting Type | Surface Mount |
Key Features
- TTL inputs with lowered switching threshold, allowing translation from 3.3 V to 5 V.
- Slow edges reduce output ringing.
- 3-state outputs that can be placed in a high-impedance state, reducing bus loading and the need for interface or pull-up components.
- Suitable for driving highly capacitive or relatively low-impedance loads.
Applications
- Buffer registers
- IO ports
- Bidirectional bus drivers
- Working registers
Q & A
- What is the SN74AHCT574PW used for? The SN74AHCT574PW is used as an octal edge-triggered D-type flip-flop with 3-state outputs, suitable for applications such as buffer registers, IO ports, bidirectional bus drivers, and working registers.
- What is the package type of the SN74AHCT574PW? The package type is 20-TSSOP (0.173", 4.40mm Width).
- What is the maximum clock frequency of the SN74AHCT574PW? The maximum clock frequency is 115 MHz.
- What is the supply voltage range for the SN74AHCT574PW? The supply voltage range is 4.5 V to 5.5 V.
- What is the operating temperature range for the SN74AHCT574PW? The operating temperature range is -40°C to 85°C.
- How many bits per element does the SN74AHCT574PW have? The SN74AHCT574PW has 8 bits per element.
- What type of trigger does the SN74AHCT574PW use? The SN74AHCT574PW uses a positive edge trigger.
- What is the maximum propagation delay for the SN74AHCT574PW? The maximum propagation delay is 10.6 ns at 5V with a 50pF load capacitance.
- What is the quiescent current (Iq) of the SN74AHCT574PW? The quiescent current (Iq) is 4 µA.
- Is the SN74AHCT574PW suitable for surface mounting? Yes, the SN74AHCT574PW is suitable for surface mounting.
