Overview
The 74AC74MTR is a dual D-type flip-flop integrated circuit produced by STMicroelectronics, although it is noted that this specific part number might be obsolete or sourced from other manufacturers like Fairchild Semiconductor. This component is part of the 74AC and 74ACT series, known for their high-speed CMOS logic and TTL-compatible inputs. The device features asynchronous clear and set inputs, along with complementary outputs (Q and Q).
Key Specifications
| Parameter | Description | Typical Value | Guaranteed Limits |
|---|---|---|---|
| Supply Voltage (VCC) | AC: 2.0V to 6.0V, ACT: 4.5V to 5.5V | - | - |
| Operating Temperature (TA) | -40°C to +85°C | - | - |
| Input Voltage (VI) | 0V to VCC | - | - |
| Output Voltage (VO) | 0V to VCC | - | - |
| Maximum Clock Frequency | AC: 100 MHz @ 3.3V, ACT: 145 MHz @ 5.0V | - | - |
| Propagation Delay (CP to Q) | AC: 4.5 ns @ 3.3V, ACT: 4.0 ns @ 5.0V | - | - |
| Output Source/Sink Current (IO) | ±24 mA | - | - |
| Input Leakage Current (IIN) | ±1.0 µA | - | - |
| Quiescent Supply Current (ICC) | 20.0 µA | - | - |
Key Features
- Dual D-type positive edge-triggered flip-flop with asynchronous clear and set inputs.
- Complementary outputs (Q and Q).
- High-speed CMOS logic with TTL-compatible inputs.
- Reduced ICC by 50% compared to previous generations.
- Output source/sink current up to ±24 mA.
- Available in various packages including SOIC, SOP, TSSOP, and PDIP.
Applications
- High-speed digital circuits requiring edge-triggered flip-flops.
- Sequential logic circuits in computing and communication systems.
- Memory and register applications.
- Timing and control circuits in various electronic systems.
Q & A
- What is the 74AC74MTR?
The 74AC74MTR is a dual D-type flip-flop integrated circuit with asynchronous clear and set inputs and complementary outputs.
- What are the supply voltage ranges for the 74AC and 74ACT series?
The supply voltage ranges are 2.0V to 6.0V for the 74AC series and 4.5V to 5.5V for the 74ACT series.
- What is the maximum clock frequency for the 74AC74?
The maximum clock frequency is 100 MHz at 3.3V for the 74AC series and 145 MHz at 5.0V for the 74ACT series.
- What are the propagation delays for the 74AC74?
The propagation delays are approximately 4.5 ns for the 74AC series at 3.3V and 4.0 ns for the 74ACT series at 5.0V.
- What is the output source/sink current capability of the 74AC74?
The output source/sink current capability is up to ±24 mA.
- What are the typical applications of the 74AC74?
Typical applications include high-speed digital circuits, sequential logic circuits, memory and register applications, and timing and control circuits.
- What packages are available for the 74AC74?
The component is available in SOIC, SOP, TSSOP, and PDIP packages.
- Is the 74AC74 suitable for life support devices?
No, the 74AC74 is not authorized for use as critical components in life support devices or systems without the express written approval of the manufacturer.
- What is the operating temperature range for the 74AC74?
The operating temperature range is -40°C to +85°C.
- What is the storage temperature range for the 74AC74?
The storage temperature range is -65°C to +150°C.
