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參數資料
| 型號： | LMC555 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CMOS Timer |
| 中文描述： | 的CMOS定時器 |
| 文件頁數： | 3/12頁 |
| 文件大小： | 318K |
| 代理商： | LMC555 |
Absolute Maximum Ratings
(Notes 2, 3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage, V
+
Input Voltages, V
TRIG
, V
RES
, V
CTRL
,
V
THRESH
Output Voltages, V
O
, V
DIS
Output Current I
O
, I
DIS
Storage Temperature Range
Soldering Information
MDIP Soldering (10 seconds)
SOIC, MSOP Vapor Phase (60
sec)
SOIC, MSOP Infrared (15 sec)
Note:
See AN-450 “Surface Mounting Methods and Their Effect on Product
Reliability” for other methods of soldering surface mount devices.
15V
0.3V to V
S
+ 0.3V
15V
100 mA
65C to +150C
260C
215C
220C
Operating Ratings
(Notes 2, 3)
Termperature Range
Thermal Resistance (
θ
JA
) (Note 2)
SO, 8-lead Small Outline
MSOP, 8-lead Mini Small
Outline
MDIP, 8-lead Molded Dip
8-Bump micro SMD
Maximum Allowable Power
Dissipation
@
25C
MDIP-8
SO-8
MSOP-8
8 Bump micro SMD
40C to +85C
169C/W
225C/W
111C/W
220C/W
1126mW
740mW
555mW
568mW
Electrical Characteristics
Test Circuit, T = 25C, all switches open, RESET to V
S
unless otherwise noted
(Notes 1, 2)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Limits)
I
S
Supply Current
V
S
= 1.5V
V
S
= 5V
V
S
= 12V
V
S
= 1.5V
V
S
= 5V
V
S
= 12V
V
S
= 1.5V, I
DIS
= 1 mA
V
S
= 5V, I
DIS
= 10 mA
V
S
= 1.5V, I
O
= 1 mA
V
S
= 5V, I
O
= 8 mA
V
S
= 12V, I
O
= 50 mA
V
S
= 1.5V, I
O
= 0.25 mA
V
S
= 5V, I
O
= 2 mA
V
S
= 12V, I
O
= 10 mA
V
S
= 1.5V
V
S
= 12V
V
S
= 5V
V
S
= 1.5V (Note 4)
V
S
= 12V
V
S
= 5V
V
S
= 5V
V
S
= 12V
SW 2, 4 Closed
V
S
= 1.5V
V
S
= 5V
V
S
= 12V
V
S
= 5V
±
1V
V
S
= 5V
40C
≤
T
≤
+85C
SW 1, 3 Closed, V
S
= 12V
Max. Freq. Test Circuit, V
S
= 5V
Max. Freq. Test Circuit
V
S
= 5V, C
L
= 10 pF
50
100
150
1.0
3.3
8.0
75
150
0.2
0.3
1.0
1.25
4.7
11.3
0.5
4.0
10
0.7
0.75
10
10
1.0
150
250
400
1.2
3.8
8.6
150
300
0.4
0.6
2.0
μA
V
CTRL
Control Voltage
0.8
2.9
7.4
V
V
DIS
Discharge Saturation
Voltage
Output Voltage (Low)
mV
V
OL
V
V
OH
Output Voltage
(High)
1.0
4.4
10.5
0.4
3.7
V
V
TRIG
Trigger Voltage
0.6
4.3
V
I
TRIG
V
RES
Trigger Current
Reset Voltage
pA
0.4
0.4
1.0
1.1
V
I
RES
I
THRESH
I
DIS
t
Reset Current
Threshold Current
Discharge Leakage
Timing Accuracy
pA
pA
nA
100
0.9
1.0
1.0
1.1
1.1
1.1
0.3
75
1.25
1.20
1.25
ms
t/
V
S
t/
T
Timing Shift with Supply
Timing Shift with
Temperature
Astable Frequency
Maximum Frequency
Output Rise and
Fall Times
%/V
ppm/C
f
A
f
MAX
t
R
, t
F
4.0
4.8
3.0
15
5.6
kHz
MHz
ns
L
www.national.com
3
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