General purpose timer

The NE555 is CMOS RC timers providing significantly improved

performance over the standard SE/NE555 and 355 timers, while at

the same time being direct replacements for those devices in most

applications. Improved parameters include low supply current, wide

operating supply voltage range, low THRESHOLD, TRIGGER and

RESET currents, no crowbarring of the supply current during output

transitions, higher frequency performance and no requirement to

decouple CONTROL VOLTAGE for stable operation.

Specifically, the NE555 is stable controller capable of producing

accurate time delays of frequencies.

• Exact equivalent in most cases for SE/NE555.

• Low Supply Current.

• High speed operation – 500 kHz guaranteed.

• Wide operation supply voltage range – 2 to 18 volts.

• Timing from microseconds through hours.

• Operates in both astable and monostable modes.

• Adjustable duty cycle.

• High output source/sink driver can drive TTL/CMOS

ORDERING INFORMATION

NE555P DIP-8

NE555F SOP-8

packages.

PIN ASSIGNMENT

OUTPUT

TRIGGER

RESET

NE555

DISCHARGE

V

CC

01

02

03

04

05

06

07

08

THRESHOLD

CONTROL

VOLTAGE

GND

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