Overview
The TS556IDTTR is a low-power dual CMOS timer produced by STMicroelectronics. It is designed to offer very low power consumption and high frequency capabilities, making it an efficient alternative to traditional bipolar timers like the NE556. The TS556 operates in both monostable and astable modes, ensuring accurate timing in various applications. With its reduced supply current spikes during output transitions and high input impedance, it allows for the use of lower decoupling capacitors and minimized timing capacitors.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | - | 16 | V |
| Supply Current (ICC) at VCC = 5 V | - | 220 | 500 | µA |
| Supply Current (ICC) at VCC = 3 V | - | 180 | 460 | µA |
| Maximum Astable Frequency | - | - | 2.7 | MHz |
| Input Impedance | 10^12 | - | - | Ω |
| Output Sink Current | - | - | 50 | mA |
| Output Source Current | - | - | 10 | mA |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Very low power consumption: 220 µA typ at VCC = 5 V and 180 µA typ at VCC = 3 V.
- High maximum astable frequency of 2.7 MHz.
- Pin-to-pin and functionally compatible with bipolar NE556.
- Wide voltage range: 2 V to 16 V.
- Reduced supply current spikes during output transitions.
- High input impedance: 10^12 Ω.
- Output compatible with TTL, CMOS, and logic MOS.
Applications
The TS556IDTTR is suitable for a variety of applications where low power consumption and high timing accuracy are crucial. These include:
- Timing and pulse generation in low-power systems.
- One-shot generators in monostable mode.
- Multivibrators in astable mode.
- Applications requiring high input impedance and low decoupling capacitor requirements.
Q & A
- What is the typical supply current of the TS556IDTTR at VCC = 5 V?
The typical supply current is 220 µA at VCC = 5 V.
- What is the maximum astable frequency of the TS556IDTTR?
The maximum astable frequency is 2.7 MHz.
- Is the TS556IDTTR compatible with bipolar NE556 timers?
Yes, it is pin-to-pin and functionally compatible with bipolar NE556 timers.
- What is the operating temperature range of the TS556IDTTR?
The operating temperature range is -40°C to 125°C.
- What is the input impedance of the TS556IDTTR?
The input impedance is 10^12 Ω.
- Can the TS556IDTTR be used in both monostable and astable modes?
Yes, it can be used in both monostable and astable modes.
- What is the minimum supply voltage for the TS556IDTTR?
The minimum supply voltage is 2 V.
- How does the TS556IDTTR reduce supply current spikes during output transitions?
The TS556IDTTR reduces supply current spikes during output transitions, allowing for the use of lower decoupling capacitors.
- What types of outputs are compatible with the TS556IDTTR?
The outputs are compatible with TTL, CMOS, and logic MOS.
- Can the TS556IDTTR be used in applications requiring high timing accuracy?
Yes, it is designed to provide accurate timing in both monostable and astable modes.
