100% Original And New Integrated Circuits NE555DR Chip In Stock

These devices are precision timing circuits capable of
1• Timing From Microseconds to Hours
producing accurate time delays or oscillation. In the
• Astable or Monostable Operation time-delay or mono-stable mode of operation, the
• Adjustable Duty Cycle timed interval is controlled by a single external
• TTL-Compatible Output Can Sink or Source resistor and capacitor network. In the a-stable mode
Up to 200 mA of operation, the frequency and duty cycle can be
controlled independently with two external resistors
• On Products Compliant to MIL-PRF-38535, and a single external capacitor. All Parameters Are Tested Unless Otherwise
Noted. On All Other Products, Production The threshold and trigger levels normally are twoProcessing Does Not Necessarily thirds and one-third, respectively, of VCC. These Include
levels can be altered by use of the control-voltage Testing of All Parameters. terminal. When the trigger input falls below the trigger
level, the flip-flop is set, and the output goes high. If 2 Applications the trigger input is above the trigger level and the
• Fingerprint Biometrics threshold input is above the threshold level, the flipflop is reset and the output is low. The reset (RESET) • Iris Biometrics
input can override all other inputs and can be used to
• RFID Reader initiate a new timing cycle. When RESET goes low,
the flip-flop is reset, and the output goes low. When
the output is low, a low-impedance path is provided
between discharge (DISCH) and ground.
The output circuit is capable of sinking or sourcing
current up to 200 mA. Operation is specified for
supplies of 5 V to 15 V. With a 5-V supply, output
levels are compatible with TTL inputs.