ICM7555IPA+: General-purpose CMOS timer, 2V to 18V supply, low power consumption
Analog Devices

The ICM7555IPA+ from Analog Devices is a monolithic, CMOS timer providing a reliable solution for generating accurate time delays or frequencies. It is designed to operate over a wide supply voltage range of 2V to 18V, making it suitable for battery-powered applications. The device is characterized by its extremely low supply current, which is essential for power-sensitive designs.

This timer supports a variety of applications, including pulse generation, precision timing, sequential timing, time delay generation, and more. It features adjustable duty cycle, low threshold, trigger, and reset currents, and is TTL compatible. The ICM7555IPA+ offers improved performance over standard bipolar timers, particularly in terms of power consumption and output transition spikes.

Key Specifications and Features

  • Supply Voltage Range: 2V to 18V
  • Supply Current: 60 to 300µA (depending on V+)
  • Timing Error Initial Accuracy: ±2.0 to 5.0%
  • Drift with Temperature: 50 to 100 ppm/°C
  • Drift with Supply Voltage: 1.0 to 3.0 %/V
  • Threshold Voltage: 0.63 to 0.67 V+
  • Trigger Voltage: 0.29 to 0.34 V+
  • Maximum Oscillation Frequency: 500 kHz

ICM7555IPA+ Datasheet

ICM7555IPA+ datasheet (PDF)

ICM7555IPA+ Substitutes
Equivalent alternate parts that may serve as a substitute for ICM7555IPA+, most popular parts first

Applications

  • Pulse generation
  • Precision timing
  • Sequential timing
  • Time delay generation
  • Pulse-width modulation

Category

IC

General information

General-purpose timers, such as the ICM7555IPA+ from Analog Devices, are integral components in electronic circuits for generating precise time delays or frequencies. These devices can be configured in various modes, including monostable, astable, and bistable, to suit a wide range of applications from simple delay circuits to complex pulse generators and oscillators.

When selecting a general-purpose timer, it is important to consider the supply voltage range, power consumption, timing accuracy, and the maximum operating frequency. The supply voltage range determines the compatibility with other circuit components, while low power consumption is crucial for battery-powered or energy-efficient applications. Timing accuracy and maximum operating frequency affect the precision and range of timing functions the timer can perform.

General-purpose timers are widely used in applications such as pulse generation, timing control, and signal modulation. They are favored for their versatility, ease of use, and the ability to operate across a wide voltage range. Engineers should also pay attention to the specific requirements of their application, such as the need for adjustable duty cycles or compatibility with TTL logic levels, when choosing a timer.

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