ICM7555 General Purpose CMOS Timer DIP

Description

ICM7555 General Purpose CMOS Timer DIP The ICM7555 is a low-power CMOS implementation of the industry-standard 555 timer in a compact DIP-8 package. It is designed to produce accurate time delays and stable oscillations using only a few external components. Compared with bipolar 555 devices, the ICM7555 significantly reduces quiescent current and power-spike behavior during output transitions, making it a better fit for battery-powered and low-power instrumentation. In operation the chip can be configured as either a monostable (one-shot) or astable (oscillator) timer; a single resistor–capacitor pair controls timing in monostable mode, while two resistors plus a capacitor set frequency and duty cycle in astable mode. The device provides TTL/CMOS-compatible output levels at 5 V and maintains stable timing characteristics across its recommended supply range, simplifying integration into mixed-logic systems. Mechanically offered in DIP-8, SOP-8, MSOP-8 and DFN-8 packages, the ICM7555 balances compact footprint with straightforward through-hole or surface-mount assembly. Its low leakage on trigger/threshold/reset pins, modest thermal ratings and predictable switching times make it useful for a wide range of control and timing tasks where low standby current and stable timing are important. Features: Very low supply current (typical ~80 µA). Steady-state frequency capability up to 500 kHz. Wide recommended supply range: 4.5–15 V. TTL/CMOS-compatible outputs at 5 V. Extremely low trigger/threshold/reset currents (≈20 pA typical). Low supply-current spikes during output transitions. Pin-compatible with standard 555 timers. Specifications: Specification Value Recommended supply voltage (VCC): 4.5 – 15 V. Absolute maximum VCC: 15 V. Supply current (Is): VCC=5 V: 30 – 50 µA; VCC=10 V: 60 – 100 µA; VCC=15 V: 90 – 150 µA. Control voltage (VCTRL): VCC=5 V: 3.28 – 3.38 V (typ 3.33 V). Discharge saturation voltage (VDIS): VCC=5 V, IDIS=10 mA: 100 – 400 mV. Output low (VOL): VCC=5 V, IO=3.2 mA: 0.1 – 0.4 V. Output high (VOH): VCC=5 V, IO=−2 mA: 4.0 – 4.5 V. Trigger voltage (VTRIG): VCC=5 V: 1.55 – 1.70 V (typ 1.66 V). Trigger current (ITRIG): VCC=5 V: ≈ 10 pA. Reset voltage (VRES): VCC=5 V: 0.4 – 1.2 V (typ ≈0.7 V). Reset/threshold leakage currents: ≈ 10–20 pA (typical). Discharge leakage (IDIS): VCC=12 V: 1 – 100 nA. Output rise/fall times (tr / tf): VCC=5 V, RL=10 MΩ, CL=10 pF: typ 35–40 ns, max 75 ns. Maximum steady-state frequency (Fmax): 500 kHz. Operating temperature (Topr): −40 to +85 °C. Junction temperature (Tj): Up to 150 °C. Storage temperature (Tstg): −50 to +150 °C. Pinout Diagram: Footprint Diagram: Applications: Pulse generator. Precise timing. Delay generation. Pulse-width modulation (PWM). Package Contents: 1x ICM7555 General Purpose CMOS Timer DIP Datasheet

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