Overview
The MC1455BDR2G is a highly stable monolithic timing circuit produced by onsemi. It is designed to produce accurate time delays or oscillation and is a direct replacement for the NE555 timers. This component operates in both monostable and astable modes, allowing for versatile use in various timing applications. The MC1455BDR2G features high current output capabilities, temperature stability, and adjustable duty cycle, making it suitable for a wide range of electronic projects.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage (VCC) | 4.5 to 16 | Vdc |
| Operating Temperature Range | -40 to +85 | °C |
| Maximum Operating Die Junction Temperature | +150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Discharge Current (Pin 7) | 200 | mA |
| Supply Current (VCC = 5.0 V, RL = ∞) | 3.0 to 6.0 | mA |
| Threshold Voltage/Supply Voltage | 2/3 VCC | |
| Trigger Voltage | 1/3 VCC | |
| Output Voltage Low (ISink = 200 mA, VCC = 15 V) | 0.1 to 2.5 | Vdc |
| Output Voltage High (ISource = 200 mA, VCC = 15 V) | 12.75 to 13.3 | Vdc |
| Rise Time Differential Output | 100 | ns |
| Fall Time Differential Output | 100 | ns |
Key Features
- Direct replacement for NE555 timers
- Timing from microseconds through hours
- Operates in both monostable and astable modes
- Adjustable duty cycle
- High current output can source or sink up to 200 mA
- Output can drive TTL circuits
- Temperature stability of 0.005% per °C
- Normally ON or Normally OFF output
- Pb-free packages available
Applications
The MC1455BDR2G is versatile and can be used in a variety of applications, including:
- Timing circuits in electronic devices
- Pulse width modulation
- Missing pulse detection
- Solid-state time delay relays
- Oscillators and frequency generators
- Automotive and industrial control systems
Q & A
- What is the operating temperature range of the MC1455BDR2G?
The operating temperature range is -40°C to +85°C.
- What is the maximum discharge current of the MC1455BDR2G?
The maximum discharge current is 200 mA.
- Can the MC1455BDR2G operate in both monostable and astable modes?
- What is the typical supply current when the output is high?
The typical supply current when the output is high is 1.0 mA less than when the output is low.
- How is the time delay calculated in the monostable mode?
The time delay is calculated using the equation t = 1.1 RA C, where RA is the resistance and C is the capacitance.
- What is the threshold voltage for triggering the MC1455BDR2G?
The threshold voltage for triggering is 1/3 VCC.
- Can the MC1455BDR2G drive TTL circuits?
- What is the temperature stability of the MC1455BDR2G?
The temperature stability is 0.005% per °C.
- Are Pb-free packages available for the MC1455BDR2G?
- What is the maximum storage temperature range for the MC1455BDR2G?
The maximum storage temperature range is -65°C to +150°C.
