NA555DR Clock Timing & Frequency Management by Texas Instruments


Status: Unknown
Series: -
RoHS: Unknown
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These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or mono-stable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the a-stable 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 twothirds 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 flipflop 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.
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339,794 units
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Frequency 100kHz
Supply Voltage Min 4.5V
Supply Voltage Max 16V
Digital IC Case SOIC
No. of Pins 8Pins
Operating Temperature Min -40°C
Operating Temperature Max 105°C
Product Range -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Clock External Input Yes
No. of Timers 1
Operating Mode Astable Monostable

Alternative Descriptions

Precision Timers | Texas Instruments
NA555DR TI | Elfaro
Standard Timer Single 8-Pin SOIC T/R | Holdelec
SMT TAPE | Component Electronics
IC, TIMER, 8SOIC | Newark Electronics

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The NA555DR is listed under Semiconductors - ICs > Clock Timing & Frequency Management > Timers Oscillators & Pulse Generators.

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