Overview
The MC74HC574ADW, produced by onsemi, is a high-performance Silicon-Gate CMOS octal 3-state noninverting D flip-flop. This device is identical in pinout to the LS574 and is designed to facilitate PC board layout by having the flip-flop inputs on the opposite side of the package from the outputs. It is part of the HC series, known for its compatibility with standard CMOS outputs and, with pull-up resistors, LSTTL outputs. The MC74HC574ADW is particularly useful in applications requiring data storage and transfer, especially where output enable control is necessary.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | −0.5 to +6.5 | V |
| DC Input Voltage (VIN) | −0.5 to VCC + 0.5 | V |
| DC Output Voltage (VOUT) | −0.5 to VCC + 0.5 | V |
| Operating Voltage Range | 2.0 to 6.0 V | V |
| Maximum Clock Frequency (50% Duty Cycle) | Up to 35 MHz | MHz |
| Maximum Propagation Delay, Clock to Q | 27 ns (at VCC = 6.0 V) | ns |
| Maximum Propagation Delay, Output Enable to Q | 26 ns (at VCC = 6.0 V) | ns |
| Low Input Current | 1.0 μA | μA |
| Output Drive Capability | 15 LSTTL Loads | |
| Storage Temperature Range | −65 to +150 °C | °C |
| Junction Temperature Under Bias | +150 °C | °C |
Key Features
- Output Drive Capability: 15 LSTTL Loads
- Outputs Directly Interface to CMOS, NMOS, and TTL
- Operating Voltage Range: 2.0 to 6.0 V
- Low Input Current: 1.0 μA
- In Compliance with the Requirements Defined by JEDEC Standard No. 7A
- Chip Complexity: 286 FETs or 71.5 Equivalent Gates
- Pb-Free and RoHS Compliant
- AEC-Q100 Qualified and PPAP Capable for automotive and other applications requiring unique site and control change requirements
Applications
The MC74HC574ADW is suitable for a variety of applications, including:
- Data Storage and Transfer Systems: The device's ability to store data even when outputs are not enabled makes it ideal for applications requiring data retention.
- PC Board Layout: The flip-flop inputs on the opposite side of the package from the outputs facilitate easier board design.
- Interface Applications: It can act as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs.
- Automotive and Industrial Control Systems: AEC-Q100 qualification and PPAP capability make it suitable for automotive and other demanding environments.
Q & A
- What is the operating voltage range of the MC74HC574ADW?
The operating voltage range is 2.0 to 6.0 V.
- What is the maximum clock frequency of the MC74HC574ADW?
The maximum clock frequency is up to 35 MHz at 50% duty cycle.
- How many LSTTL loads can the MC74HC574ADW drive?
The device can drive up to 15 LSTTL loads.
- Is the MC74HC574ADW compatible with TTL outputs?
Yes, with pull-up resistors, the inputs are compatible with LSTTL outputs.
- What is the storage temperature range of the MC74HC574ADW?
The storage temperature range is −65 to +150 °C.[
- Is the MC74HC574ADW Pb-Free and RoHS Compliant?
Yes, the device is Pb-Free and RoHS Compliant.[
- What is the junction temperature under bias for the MC74HC574ADW?
The junction temperature under bias is +150 °C.[
- Can the MC74HC574ADW be used in automotive applications?
Yes, it is AEC-Q100 Qualified and PPAP Capable, making it suitable for automotive and other demanding environments.[
- How does the Output Enable input affect the device outputs?
The Output Enable input does not affect the states of the flip-flops but forces all device outputs to the high-impedance state when high.[
- What is the minimum setup time for data to clock?
The minimum setup time for data to clock is 10 ns at VCC = 6.0 V.[
