TECHNICAL DATA
1
I N T E G R A L
CMOS general purpose timer
The ILC555 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 ILC555 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
ILC555
N SUFFIX
PLASTIC
1
8
ORDERING INFORMATION
ILC555N Plastic
IZC555
Chip
T
A
= -20
to 70 C for
the package
PIN ASSIGNMENT
OUTPUT
TRIGGER
RESET
ILC555N
DISCHARGE
V
CC
01
02
03
04
05
06
07
08
THRESHOLD
CONTROL
VOLTAGE
GND
ILC555
2
I N T E G R A L
TRUTH TABLE
THRESHOLD
TRIGGER
RESET
OUTPUT
DISCHARGE
X
X
L
L
ON
> 2/3
V
CC
> 1/3
V
CC
H
L
ON
< 2/3
V
CC
> 1/3
V
CC
H
STABLE
STABLE
X
< 1/3
V
CC
H
H
OFF
MAXIMUM RATINGS
AND RECOMMENDED OPERATING CONDITIONS
Recommended operating
conditions
Maximum ratings
Value
Value
Parameter, unit
Symbol
min
max
min
max
Supply Voltage, V
V
CC
2.0
18.0
0
18.0
Output Current, m
I
O
-
20
-
100
Input Voltage, V
V
TH,
V
TRIG,
V
RST
-
-
-0.3
V
CC
+0.3
Power Dissipation, mW
P
D
-
-
-
200
Operating Temperature,
T
OPR
-20
70
-20
85
Storage Temperature,
T
STG
-
-
-65
150
Lead Temperature, 1 mm from
Case for 10 Seconds,
T
SOLDER
-
-
260
ILC555
4
I N T E G R A L
AC ELECTRICAL CHARACTERISTICS
Test Conditions
Value
Parameter, unit
Symbol
R
L
, C
L
V
CC,
V
Min
Max
Tempe-
rature,
Rise (Fall) Time of Output,
ns
t
THL
, t
TLH
R
L
= 10
, C
L
= 10 pF
5.0
35
75
25
10
70
150
-20, 70
Guaranteed Max Osc Freq,
kHz
f
MAX
Astable Operation
500
25
10
2.0-
18.0
200
-20, 70
Initial accuracy
, %
5
Drift with Temperature
,
%/
f
5.0
0.02
-20, 70
10.0
0.03
15.0
0.06
Drift with Supply Voltage,
f
5.0
3
25
10
%/
R
L
= 1 - 100 k
,
C
L
= 0.1 F
6
-20, 70
Figura 1. Block Diagram
t
THL
t
TLH
t
HL
TRIGGER
GND
V
CC
GND
V
CC
OUTPUT
0.9
0.1
0.1
0.9
0.9
0.1
Figura 2. Switcing Waveforms
COMPARATOR A
THRESHOLD
TRIGGER
COMPARATOR B
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