Wing Shing NE555M, NE555N Datasheet

General Description

isahighlystabledeviceforgeneratingaccurate
time delays or oscillation. Additional terminals are provided
for triggering or resetting if desired. In the time delay mode of
operation, the time is precisely controlled by one external re­sistor and capacitor. For astable operation as an oscillator,
the free running frequency and duty cycle are accurately
controlled with two external resistors and one capacitor. The
circuit may be triggered and reset on falling waveforms, and
the output circuit can source or sink up to 200mA or drive
TTL circuits.

Features

n Direct replacement for SE555/NE555
n Timing from microseconds through hours
n Operates in both astable and monostable modes
n Adjustable duty cycle
n Output can source or sink 200 mA
n Output and supply TTL compatible

n Normally on and normally off output

Applications

n Precision timing
n Pulse generation
n Sequential timing
n Time delay generation
n Pulse width modulation
n Pulse position modulation
n Linear ramp generator

Wing Shing Computer Components Co., (H.K.)Ltd. Tel:[phone] Fax:[phone]
Homepage: http://www.wingshing.com E-mail: [e-mail]

(TA= 25˚C, VCC= +5V to +15V, unless othewise specified)

Parameter Conditions Limits Units

Min Typ Max

Supply Voltage 4.5 16 V

Supply Current V

CC

= 5V, RL=

∞

VCC= 15V, RL=

∞

3

10

6

15 mA

Timing Error, Monostable

Initial Accuracy 1%
Drift with Temperature R

A

= 1k to 100kΩ, 50 ppm/˚C

C = 0.1µF, (Note 5)
Accuracy over Temperature 1.5 %
Drift with Supply 0.1 %/V

Timing Error, Astable

Initial Accuracy 2.25 %
Drift with Temperature R

A,RB

= 1k to 100kΩ, 150 ppm/˚C

C = 0.1µF, (Note 5)
Accuracy over Temperature 3.0 %
Drift with Supply 0.30 %/V

Threshold Voltage 0.667 x V

CC

Trigger Voltage VCC= 15V 5 V

V

CC

= 5V 1.67 V
TriggerCurrent
ResetVoltage
Reset Current 0.1 0.4 mA
ThresholdCurrent(Note6)

Control Voltage Level V

CC

= 15V

V

CC

=5V

9

2.6

10

3.33

11

4

V

Pin 7 Leakage Output High 1 100 nA
Pin 7 Sat (Note 7)

Output Low V

CC

= 15V, I7= 15mA 180 mV

Output Low V

CC

= 4.5V, I7= 4.5mA 80 200 mV

LM555