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ICM7555 Datasheet(PDF) 5 Page - NXP Semiconductors

Part No. ICM7555
Description  General purpose CMOS timer
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo NXP - NXP Semiconductors

ICM7555 Datasheet(HTML) 5 Page - NXP Semiconductors

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ICM7555_2
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 3 August 2009
5 of 22
NXP Semiconductors
ICM7555
General purpose CMOS timer
[1]
The supply current value is essentially independent of the TRIGGER, THRESHOLD and RESET voltages.
[2]
Astable timing is calculated using the following equation:
The components are defined in Figure 15.
[3]
RA, RB = 1 kΩ to 100 kΩ; C = 0.1 µF; 5 V < VDD <15V
[4]
Parameter is not 100 % tested.
II
input current
TRIGGER
VDD =Vtrig =Vmax
-50
-
pA
VDD =Vtrig = 5 V
-
10
-
pA
VDD =Vtrig =Vmin
-1
-pA
THRESHOLD
VDD =Vth =Vmax
-50
-
pA
VDD =Vth =5V
-
10
-
pA
VDD =Vth =Vmin
-1
-pA
RESET
VDD =Vrst =Vmax
-
100
-
pA
VDD =Vrst =5V
-
20
-
pA
VDD =Vrst =Vmin
-2
-pA
VOL
LOW-level output voltage
VDD =Vmax; Isink = 3.2 mA
-
0.1
0.4
V
VDD =5V; Isink = 3.2 mA
-
0.2
0.4
V
VOH
HIGH-level output voltage
Isource = −1.0 mA
VDD =Vmax
15.25
15.7
-
V
VDD =5Vmax
4.0
4.5
-
V
Vo
output voltage
DISCHARGE:
VDD =5V; IDIS =10mA
-
0.2
0.4
V
tr(o)
output rise time[4]
RL =10MΩ; CL = 10 pF;
VDD =5V
-45
75
ns
tf(o)
output fall time[4]
-20
75
ns
fosc
oscillator frequency
astable mode
-
-
500
kHz
Table 5.
Characteristics …continued
Tamb =25 °C unless otherwise specified.
Sym
bol
Parameter
Conditions
Min
Typ
Max
Unit
f
1.38
R
A
2R
B
+
()C
---------------------------------
=


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