TI NE555P IC Precision Timer / Astable (Pk of 4)

Manufactured by Texas Instruments - DIL8 Package 

FEATURES

 

These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor.


The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to 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. 8 Pin DIL package

Our Ref: #0565 - B35


Combined Postage

I will combine postage where several different items are purchased at the same time. I only charge one single postage charge, that of the most expensive shipping rate, and will then include all other items for that single rate. Most items are small and attract just a basic shipping charge to cover post & packaging but some heavier items may be charged at a higher rate.

If you purchase more than one product please add it to your basket (if possible) and then request a total for your combined purchases. (I believe this only works on ebay.co.uk desktop website and not on mobile devices or some other country websites). I will then send you a total with just the one postage charge. If you cannot follow this process then I will refund the excess postage when I process the order.

In most cases you can order as many of a single item as you want for the same postage as buying one, and combine other items within this single charge. For some heavier items such as transformers, there may be an additional postage charge for the second and subsequent items. Please feel free to contact us if you have any queries

International Postage

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Shipping

Orders placed by 1pm Mon - Fri will usually be shipped the same day but this is not guaranteed.