ZSCT1555N8TA Diodes Zetex, ZSCT1555N8TA Datasheet - Page 8

• Manufacturer Part Number: ZSCT1555N8TA
• Description: IC TIMER PRECISION 555 8-SOIC
• Manufacturer: Diodes Zetex
• Type: 555 Type, Timer/Oscillator (Single)r

Specifications of ZSCT1555N8TA

• Frequency: 330kHz
• Voltage - Supply: 0.9 V ~ 6 V
• Current - Supply: 150µA
• Operating Temperature: -20°C ~ 100°C
• Package / Case: 8-SOIC (3.9mm Width)
• # Internal Timers: 1
• Power Dissipation: 625mW
• Operating Supply Voltage (min): 0.9V
• Operating Supply Voltage (typ): 1.5V
• Operating Supply Voltage (max): 6V
• Package Type: SOIC
• Low Level Output Current: 100mA
• Pin Count: 8
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Count: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Compliant
• Other names: ZSCT1555N8TR

Issue 3 - July 2006
© Zetex Semiconductors plc 2006
Figure 5 shows the monostable mode used as
a pulse width modulator. Here the trigger pin
is supplied with a continuous pulse train, the
resulting output pulse width is modulated by
a signal applied to the control pin.
Figure 6 shows typical waveform examples.
Figure 5
Figure 6
ZSCT1555
Astable operation
The configuration of Figure 7 produces a free
running multivibrator circuit whose frequency
is independent of supply voltage. The ratio of
resistors RA and RB precisely sets the circuit
duty cycle. The capacitor is charged and
discharged between thresholds at 0.2V
0.8V
(d) can be calculated using the following
equations:-
f = 0.62/(RA + 2RB)C
d = RB /(RA + 2RB)
Figure 8 shows the waveforms generated in
this mode of operation.
Figure 7
Figure 8
CC
. Oscillation frequency (f) and duty cycle
T
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CC
and