Advanced Linear Devices ALD7555 / ALD7556 CMOS Analog RC Timers
Advanced Linear Devices ALD7555 / ALD7556 CMOS Analog RC Timers offer improved performance in speed, leakage currents, supply current, stability, temperature voltage stability, and discharge output drive compared to NE555 / NE556, SE555, TLC555, and ICM7555 / ICM7556 timers. The ALD7555 and ALD7556 feature high input impedance, which allows smaller timing capacitors and a longer timing cycle, high speed, and low power dissipation for battery-operated environments. This feature also offers reduced supply current spikes, allowing smaller and lower cost decoupling capacitors. These single/dual monolithic analog RC timing circuits offer a guaranteed low operating supply voltage of 2V to 10V, and a high discharge sinking current of 80mA at 5V.
Advanced Linear Devices ALD7555 / ALD7556 CMOS Analog RC Timers are ideal for use in a variety of applications, including battery technology, power supplies, gaming devices, and handheld wireless devices.
Features
- Improved accuracy and temperature stability
- High-speed operation: 2.5MHz typical oscillation at 5V
- High discharge sinking current of 80mA at 5V
- Guaranteed 2V to 10V operating supply voltage
- Functional equivalent to and same pin-out as NE555 / NE556, SE555, TLC555, and ICM7555 / ICM7556
- Greatly expanded high and low-frequency ranges
- High speed, low power, monolithic CMOS technology
- Low supply current spikes
- Low supply current
- 50µA typical for ALD7555
- 100µA typical for ALD7556
- Extremely low trigger, threshold, and reset currents (10pA typical)
- Operates in both monostable and astable modes
- Fixed 50% duty cycle or adjustable duty cycle
- CMOS-, NMOS, and TTL--compatible input/output
- Rail-to-rail output
Applications
- High-speed one-shot (monostable)
- Precision sequential timing
- Long delay timer
- Frequency divider
- Pulse width and pulse position modulation
- Missing pulse detector
- Synchronized timer
Published: 2010-12-16
| Updated: 2022-03-11