555 Type, Timer/Oscillator (Single) IC 2.1MHz 8-PDIP
Like the NE555, the TLC555 has a trigger level equal
to approximately one-third of the supply voltage and
a threshold level equal to approximately two-thirds of
the supply voltage. These levels can be altered by
use of the control voltage terminal (CONT). When
the trigger input (TRIG) falls below the trigger level,
the flip-flop is set and the output goes high. If TRIG
is above the trigger level and the threshold input
(THRES) is above the threshold level, the flip-flop is
reset and the output is low. The reset input (RESET)
can override all other inputs and can be used to
initiate a new timing cycle. If RESET is low, the
flip-flop is reset and the output is low. Whenever
the output is low, a low-impedance path is provided
between the discharge terminal (DISCH) and GND.
All unused inputs must be tied to an appropriate logic
level to prevent false triggering.
• Very low power consumption:
– 1mW typical at VDD = 5V
• Capable of operation in astable mode
• CMOS output capable of swinging rail to rail
• High output current capability
– Sink: 100mA typical
– Source: 10mA typical
• Output fully compatible with CMOS, TTL, and
MOS
• Low supply current reduces spikes during output
transitions
• Single-supply operation from 2V to 15V
• Functionally interchangeable with the NE555; has
same pinout
• ESD protection exceeds 1000V per ANSI/ESDA/
JEDEC JS-001
• Available in Q-temp automotive
– High-reliability automotive applications
– Configuration control and print support
– Qualification to automotive standards
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