TS555CD [STMICROELECTRONICS]
LOW POWER SINGLE CMOS TIMERS; 低功耗，单CMOS定时器
| 型号： | TS555CD |
| 厂家： | 
ST |
| 描述： | LOW POWER SINGLE CMOS TIMERS |
| 文件： | 总12页 (文件大小：87K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS555C,I,M
LOW POWER SINGLE CMOS TIMERS
.
.
.
VERYLOW POWER CONSUMPTION :
100µA typ at VCC = 5V
HIGH MAXIMUM ASTABLE FREQUENCY
2.7MHz
PIN-TO-PIN AND FUNCTIONALLY
COMPATIBLE WITH BIPOLAR NE555
VOLTAGERANGE : +2V to +18V
HIGH OUTPUT CURRENT CAPABILITY
SUPPLY CURRENT SPIKES REDUCED
DURING OUTPUT TRANSITIONS
HIGH INPUT IMPEDANCE : 1012 Ω
OUTPUT COMPATIBLE WITH TTL,CMOS
AND LOGIC MOS
.
N
DIP8
(Plastic Package)
D
SO8
.
.
.
(Plastic Micropackage)
.
.
P
TSSOP8
(Thin Shrink Small Outline Package)
ORDER CODES
Package
Temperature
Range
Part Number
N
●
●
●
D
●
●
●
P
●
●
●
TS555C
TS555I
0oC, +70oC
-40, +125oC
-55, +125oC
TS555M
Examples : TS555CD , TS555IN
PIN CONNECTIONS (top view)
DESCRIPTION
The TS555 is a single CMOS timer which offers
very low consumption (Icc(TYP) TS555 = 100µA
Icc(TYP) NE555 = 3mA) and high frequency
(f(max.) TS555 = 2.7MHz - f(max.) NE555 = 0.1 MHz)
Thus, eitherin Monostable or Astablemode,timing
remains very accurate.
GND
Trigger
Output
Reset
1
2
3
4
8
7
6
5
V
CC
Discharge
Threshold
Control
Voltage
The TS555provides reducedsupply current spikes
during output transitions, which enablesthe use of
lower decoupling capacitors compared to those
required by bipolar NE555.
Timing capacitors can also be minimized due to
high input impedance (1012 Ω).
January 1999
1/12
TS555C,I,M
BLOCK DIAGRAM
V
R e se t
C C
8
4
TS555
R
R1
R
3
Q
O utp u t
Thre s ho ld 6
+
Control
Vo lta g e
-
5
A
B
S
R
R
+
Tr ig g e r 2
-
7
Dis cha rge
1
G ro un d
RESET
Low
TRIGGER
x
THRESHOLD
OUTPUT
Low
x
x
High
Low
High
High
High
High
High
Low
Low
High
Previous State
LOW
HIGH
X
↔
↔
↔
Level Voltage ≤ Min voltage specified
Level Voltage ≥ Max voltage specified
Irrelevant
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Parameter
Value
+18
Unit
V
oC
Supply Voltage
TJ
Junction Temperature
+150
THERMAL CHARACTERISTICS
Symbol
Parameter
Value
Unit
oC
TOPER
Operating Temperature Range
TS555C
TS555I
TS555M
0 to +70
-40 to +125
-55 to +125
TSTG
Storage Temperature Range
-65 to +150
oC
2/12
TS555C,I,M
SCHEMATIC DIAGRAM
3/12
TS555C,I,M
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
VCC
Supply Voltage
+2 to +16
V
STATIC ELECTRICAL CHARACTERISTICS
VCC = +2V, Tamb = +25oC, Reset to VCC (unlessotherwise specified)
TS555C-TS555I-TS555M
Symbol
Parameter
Unit
Min.
Typ
Max.
ICC
Supply Current (no load, High and Low States)
Tamb = + 25oC
µA
65
200
200
T
min. ≤ Tamb ≤ Tmax
.
VCL
Vdis
VOL
VOH
Vtrig
Control Voltage
V
V
V
V
V
Tamb = + 25oC
1.2
1.1
1.3
0.05
0.1
1.4
1.5
T
min. ≤ Tamb ≤ Tmax
.
Discharge Saturation Voltage (Idis = 1mA)
Tamb = + 25oC
0.2
0.25
T
min. ≤ Tamb ≤ Tmax.
Low Level Output Voltage (Isink = 1mA)
Tamb = + 25oC
0.3
0.35
T
min. ≤ Tamb ≤ Tmax.
High Level Output Voltage (Isource = -0.3mA)
Tamb = + 25oC
1.5
1.5
1.9
T
min. ≤ Tamb ≤ Tmax
.
.
Trigger Voltage
Tamb = + 25oC
0.4
0.3
0.67
0.95
1.05
T
min. ≤ Tamb ≤ Tmax
Itrig
ITH
Trigger Current
Threshold Current
10
10
pA
pA
V
Vreset
Reset Voltage
Tamb = + 25oC
0.4
0.3
1.1
1.5
2.0
T
min. ≤ Tamb ≤ Tmax
.
Ireset
Idis
Reset Current
10
1
pA
nA
Discharge Pin Leakage Current
100
4/12
TS555C,I,M
STATIC ELECTRICAL CHARACTERISTICS (continued)
VCC = +5V, Tamb = +25oC, Reset to VCC (unlessotherwise specified)
TS555C-TS555I-TS555M
Symbol
Parameter
Unit
Min.
Typ
Max.
ICC
Supply Current (no load, High and Low States)
Tamb = + 25oC
µA
110
250
250
T
min. ≤ Tamb ≤ Tmax
.
VCL
Vdis
VOL
VOH
Vtrig
Control Voltage
V
V
V
V
V
Tamb = + 25oC
2.9
2.8
3.3
0.2
3.8
3.9
T
min. ≤ Tamb ≤ Tmax
.
Discharge Saturation Voltage (Idis = 10mA)
Tamb = + 25oC
0.3
0.35
T
min. ≤ Tamb ≤ Tmax.
Low Level Output Voltage (Isink = 8mA)
Tamb = + 25oC
0.3
0.6
0.8
T
min. ≤ Tamb ≤ Tmax.
High Level Output Voltage (Isource = -2mA)
Tamb = + 25oC
4.4
4.4
4.6
T
min. ≤ Tamb ≤ Tmax
.
.
Trigger Voltage
Tamb = + 25oC
1.36
1.26
1.67
1.96
2.06
T
min. ≤ Tamb ≤ Tmax
Itrig
ITH
Trigger Current
Threshold Current
10
10
pA
pA
V
Vreset
Reset Voltage
Tamb = + 25oC
0.4
0.3
1.1
1.5
2.0
T
min. ≤ Tamb ≤ Tmax
.
Ireset
Idis
Reset Current
10
1
pA
nA
Discharge Pin Leakage Current
100
5/12
TS555C,I,M
STATIC ELECTRICAL CHARACTERISTICS (continued)
VCC = +12V, Tamb = +25oC, Reset to VCC (unlessotherwise specified)
TS555C-TS555I-TS555M
Symbol
Parameter
Unit
Min.
Typ
Max.
ICC
Supply Current (no load, High and Low States)
Tamb = + 25oC
µA
170
400
400
T
min. ≤ Tamb ≤ Tmax
.
VCL
Vdis
VOL
VOH
Vtrig
Control Voltage
V
V
V
V
V
Tamb = + 25oC
7.4
7.3
8
0.09
1.2
11
8.6
8.7
T
min. ≤ Tamb ≤ Tmax
.
Discharge Saturation Voltage (Idis = 80mA)
Tamb = + 25oC
1.6
2.0
T
min. ≤ Tamb ≤ Tmax.
Low Level Output Voltage (Isink = 50mA)
Tamb = + 25oC
2
2.8
T
min. ≤ Tamb ≤ Tmax.
High Level Output Voltage (Isource = -10mA)
Tamb = + 25oC
10.5
10.5
T
min. ≤ Tamb ≤ Tmax
.
.
Trigger Voltage
Tamb = + 25oC
3.2
3.1
4
4.8
4.9
T
min. ≤ Tamb ≤ Tmax
Itrig
ITH
Trigger Current
Threshold Current
10
10
pA
pA
V
Vreset
Reset Voltage
Tamb = + 25oC
0.4
0.3
1.1
1.5
2.0
T
min. ≤ Tamb ≤ Tmax
.
Ireset
Idis
Reset Current
10
1
pA
nA
Discharge Pin Leakage Current
100
6/12
TS555C,I,M
DYNAMIC ELECTRICAL CHARACTERISTICS
Tamb = +25oC, Reset to VCC (unless otherwisespecified)
TS555C-TS555I-TS555M
Symbol
Parameter
Unit
Min
Typ
Max
Timing Accuracy (Monostable) - (note 1)
%
R = 10kΩ , C = 0.1µF
VCC = + 2V
VCC = + 5V
VCC = +12V
1
2
4
Timing Shift with supply voltage variations (Monostable)
%/V
R = 10kΩ , C = 0.1µF, VCC = + 5V +/-1V
0.38
75
Timing Shift with temperature
ppm/°C
Tmin. ≤ Tamb ≤ Tmax., VCC = + 5V
fmax
Maximum astable frequency
MHz
%
RA = 470Ω , RB = 200Ω, C = 200pF , VCC = + 5V
2.7
Astable frequency accuracy - (note 2)
RA = RB = 1kΩ to 100kΩ, C = 0.1µF
3
3
VCC = + 5V
VCC = + 12V
Timing Shift with supply voltage variations (Astable mode)
%/V
0.1
RA = RB = 1kΩ to 100kΩ, C = 0.1µF, VCC = 5 to+ 12V
Output Rise Time (VCC = + 5V , Cload = 10pF)
Output Fall Time (VCC = + 5V , Cload = 10pF)
Trigger Propagation Delay (VCC = + 5V)
tr
tf
25
20
ns
ns
ns
ns
-
tpd
trpw
100
350
Minimum Reset Pulse Width (Vtrig = + 5V)
Notes : 1. See Figure 2
2. See Figure 4
7/12
TS555C,I,M
TYPICAL CHARACTERISTICS
Thecircuit triggers on a negative-goinginput signal
whenthelevelreaches1/3VCC. Oncetriggered,the
circuit remains in this state until the set time has
elapsed,even if it is triggered again during this
interval. The duration of the output HIGH state is
given by t = 1.1 R x C.
Notice that since the charge rate and the threshold
level of the comparator are both directly propor-
tional to supply voltage, the timing interval is inde-
pendent of supply. Applying a negative pulse
simultaneouslytotheResetterminal(pin4) andthe
Trigger terminal (pin 2) during the timing cycle
discharges the external capacitor and causes the
cycle to start over. The timing cycle now starts on
thepositiveedgeofthe reset pulse. Duringthetime
the reset pulse is applied, the output is driven toits
LOW state.
Figure 1 : Supply Current (each timer) versus
Supply Voltage
300
200
100
0
4
8
12
16
When a negative trigger pulse is applied to pin 2,
the flip-flop is set, releasing the shortcircuit across
the externalcapacitor and drivingthe output HIGH.
The voltage across the capacitor increases expo-
nentially with the time constant τ = R x C.
SUPPLY VOLTAGE, VCC (V)
APPLICATION INFORMATION
MONOSTABLE OPERATION
When the voltage across the capacitor equals 2/3
V
CC, the comparator resets the flip-flopwhich then
In the monostable mode,the timer functions as a
one-shot. Referring to figure 2 the external capaci-
tor is initially held discharged by a transistor inside
the timer.
discharges the capacitor rapidly and drives the
output to its LOW state.
Figure 3 shows the actual waveforms generatedin
this mode of operation.
When Reset is not used, it should be tied high to
avoid any possible or false triggering.
Figure 2
Figure 3
V
CC
t = 0.1 ms / div
Reset
INPUT = 2.0V/div
R
4
8
Trigger
7
6
2
OUTPUT VOLTAGE = 5.0V/div
C
TS555
5
Out
3
Control Voltage
1
µ
0.01 F
CAPACITOR VOLTAGE = 2.0V/div
µ
Ω
Ω
R = 9.1k , C = 0.01 F , R = 1.0k
L
8/12
TS555C,I,M
ASTABLE OPERATION
mode of operation.
The charge time (output HIGH) is given by :
t1 = 0.693 (RA + RB) C
When the circuit is connected as shown in figure 4
(pin 2 and 6 connected) it triggers itself and free
runs as a multivibrator. The external capacitor
charges through RA and RB and discharges
through RB only. Thus the duty cycle may be pre-
cisely set by the ratio of these two resistors.
In the astable mode of operation, C charges and
dischargesbetween1/3 VCC and2/3 VCC. As inthe
triggered mode, the charge and discharge times
and therefore frequency, are independent of the
supply voltage.
and the discharge time (output LOW) by :
t2 = 0.693 (RB) C
Thus the total period T is given by :
T = t1 + t2 = 0.693 (RA + 2RB) C
The frequency of oscillation is then :
1
T
1.44
(RA + 2RB)C
f =
=
RB
RA + 2R
Figure 5 shows actual waveformsgeneratedin this
The duty cycle is given by : D =
B
Figure 4
Figure 5
t = 0.5 ms / div
V
CC
OUTPUT VOLTAGE = 5.0V/div
Reset
RA
8
4
3
7
6
Out
R
B
TS555
Control
Voltage
5
1
2
C
µ
0.01
F
CAPACITOR VOLTAGE = 1.0V/div
µ
= R = 4.8 kΩ, C = 0.1 F , R = 1.0kΩ
R
L
A
B
9/12
TS555C,I,M
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC DIP
Millimeters
Inches
Typ.
Dimensions
Min.
Typ.
Max.
Min.
Max.
A
a1
B
3.32
0.131
0.51
1.15
0.020
0.045
0.014
0.008
1.65
0.55
0.065
0.022
0.012
0.430
0.384
b
0.356
0.204
b1
D
E
0.304
10.92
9.75
7.95
0.313
e
2.54
7.62
7.62
0.100
0.300
0.300
e3
e4
F
6.6
0260
0.200
0.150
0.060
i
5.08
3.81
1.52
L
3.18
0.125
Z
10/12
TS555C,I,M
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC MICROPACKAGE (SO)
Millimeters
Dimensions
Inches
Typ.
Min.
Typ.
Max.
1.75
0.25
1.65
0.85
0.48
0.25
0.5
Min.
Max.
0.069
0.010
0.065
0.033
0.019
0.010
0.020
A
a1
a2
a3
b
0.1
0.004
0.65
0.35
0.19
0.25
0.026
0.014
0.007
0.010
b1
C
c1
D
45o (typ.)
4.8
5.8
5.0
6.2
0.189
0.228
0.197
0.244
E
e
1.27
3.81
0.050
0.150
e3
F
3.8
0.4
4.0
1.27
0.6
0.150
0.016
0.157
0.050
0.024
L
M
S
8o (max.)
11/12
TS555C,I,M
PACKAGE MECHANICAL DATA
8 PINS - THIN SHRINK SMALL OUTLINE PACKAGE
Millimeters
Dim.
Inches
Typ.
Min.
Typ.
Max.
1.20
0.15
1.05
0.30
0.20
3.10
Min.
Max.
0.05
A
A1
A2
b
0.05
0.80
0.19
0.09
2.90
0.01
0.031
0.007
0.003
0.114
0.006
0.041
0.15
1.00
0.039
c
0.012
0.122
D
E
3.00
6.40
4.40
0.65
0.118
0.252
0.173
0.025
E1
e
4.30
4.50
0.169
0.177
k
0o
8o
0o
8o
l
0.50
0.60
0.75
0.09
0.0236
0.030
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied.STMicroelectronics productsare not authorized for useas critical components in life support devices orsystems
without express written approval of STMicroelectronics.
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