| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Frequency | 500 kHz |
| Number of Pins | 14 Pin |
| Supply Voltage (DC) | 4.50 V (min) |
| Current Rating | 20.0 A |
| Case/Package | SOIC |
| Supply Current | 18.0 mA |
| Quiescent Current | 4.00 mA |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Cut Tape (CT) |
The NE556D is a dual Precision Timer can be operated in the astable or the monostable mode with external resistor-capacitor (RC) timing control. The basic timing provided by the RC time constant can be controlled actively by modulating the bias of the control-voltage input. The threshold (THRES) and trigger (TRIG) levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by using the control voltage (CONT) terminal. When the trigger input falls below 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 the discharge (DISCH) terminal and ground (GND).
● Astable or monostable operation
● TTL-compatible output can sink or source up to 150mA
● Active pull-up or pull-down
● Green product and no Sb/Br
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