MC1455P Precision Timer DIP-8 (MC1455P DIP IC)
The MC1455P is a high-performance monolithic timing circuit that is a direct replacement for the industry-standard NE555. It is capable of producing accurate time delays or oscillation. In the time-delay (monostable) mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator, the free-running frequency and duty cycle are accurately controlled with two external resistors and one capacitor.
This IC is primarily used in precision timing, pulse generation, sequential timing, and pulse width modulation (PWM). It is an essential component for Arduino electronics projects in India, serving as the heart of DIY LED flashers, tone generators, switch debouncers, and clock pulse sources for digital logic circuits.
Key Features
- Direct replacement for NE555/SE555
- Timing from microseconds through hours
- Operates in both astable and monostable modes
- Adjustable duty cycle
- Output can source or sink up to 200mA
- Output and supply TTL compatible
- Temperature stability better than 0.005 percent per degree Celsius
- Normally on and normally off output
Specifications
- IC Type = Precision Timer / Oscillator
- Supply Voltage = 4.5V to 16V
- Max Output Current = 200mA
- Power Dissipation = 600mW
- Rise and Fall Time = 100ns (Typical)
- Package Type = DIP
- Number of Pins = 8
- Mounting Type = Through-Hole
- Operating Temperature = 0 to 70 degrees Celsius
Interfaces
- PIN 1 (GND) = Ground (0V)
- PIN 2 (TRIGGER) = Responsible for transition from Low to High
- PIN 3 (OUTPUT) = Pulse Output
- PIN 4 (RESET) = Active-Low Reset Input
- PIN 5 (CONTROL) = Control Voltage Input
- PIN 6 (THRESHOLD) = Responsible for transition from High to Low
- PIN 7 (DISCHARGE) = Open Collector to discharge timing capacitor
- PIN 8 (VCC) = Positive Supply Voltage (5V-15V)
