TS556_08 [STMICROELECTRONICS]
Low-power dual CMOS timer; 低功耗双CMOS计时器
| 型号： | TS556_08 |
| 厂家： | 
ST |
| 描述： | Low-power dual CMOS timer |
| 文件： | 总19页 (文件大小：186K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS556
Low-power dual CMOS timer
Features
■ Very low power consumption:
220 µA typ at V = 5 V
CC
180 µA typ at V = 3 V
CC
N
DIP14
(Plastic package)
■ High maximum astable frequency 2.7 MHz
■ Pin-to-pin and functionally compatible with
bipolar NE556
■ Wide voltage range: 2 V to 16 V
■ Supply current spikes reduced during output
transitions
12
■ High input impedance: 10
Ω
D
SO14
(Plastic micropackage)
■ Output compatible with TTL, CMOS and logic
MOS
Description
The TS556 is a dual CMOS timer which offers a
very low consumption:
Pin connections
(top view)
(I
TS556 = 220 µA at V = +5 V versus
cc(TYP)
CC
I
NE556 = 6 mA),
cc(TYP)
and high frequency:
(f
f
TS556 = 2.7 MHz versus
NE556 = 0.1 MHz).
(max.)
(max.)
Discharge
Threshold
14
13
12
11
10
9
1
2
3
4
5
6
7
+VS
Discharge
Control
In both monostable and astable modes, timing
remains very accurate.
Threshold
Control
Voltage
Voltage
Reset
Output
Trigger
GND
The TS556 provides reduced supply current
spikes during output transitions, which enable the
use of lower decoupling capacitors compared to
those required by bipolar NE556.
Reset
Output
Trigger
8
12
Due to the high input impedance (10 Ω), timing
capacitors can also be minimized.
October 2008
Rev 2
1/19
www.st.com
19
Absolute maximum ratings and operating conditions
TS556
1
Absolute maximum ratings and operating conditions
Table 1.
Symbol
VCC
IOUT
Absolute maximum ratings
Parameter
Value
Unit
Supply voltage
+18
100
V
Output current
mA
Thermal resistance junction to ambient
DIP14 (1)
80
105
Rthja
°C/W
°C/W
SO14 (2)
Thermal resistance junction to case
DIP14(1)
33
31
Rthjc
SO14(2)
Tj
Junction Temperature
+150
-65 to +150
1200
°C
°C
Tstg
Storage Temperature Range
Human body model (HBM)(3)
Machine model (MM)(4)
ESD
200
V
Charged device model (CDM)(5)
1000
1. Short-circuits can cause excessive heating. These values are typical and specified for a single layer PCB.
2. Short-circuits can cause excessive heating. These values are typical and specified for a four layers PCB.
3. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
4. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of
connected pin combinations while the other pins remain floating.
5. Charged device model: all pins plus package are charged together to the specified voltage and then
discharged directly to the ground.
Table 2.
Symbol
VCC
Operating conditions
Parameter
Value
Unit
Supply voltage
2 to 16
V
Output sink current
Output source current
10
50
IOUT
mA
Operating free air temperature range:
TS556C
TS556I
TS556M
0 to +70
-40 to +125
-55 to +125
Toper
°C
2/19
TS556
Schematic diagram
2
Schematic diagram
Figure 1.
Schematic diagram (1/2 TS556)
3/19
Schematic diagram
Figure 2.
TS556
Block diagram
V
Re se t
CC
TS556
14
4 / 10
R
R1
R
2 / 12
Q
O utp ut
Thre sho ld
+
5 / 9
Co ntro l
Vo lta g e
-
A
B
3 / 11
6 / 8
S
R
+
Trig g e r
-
R
7
1 / 13
Disc ha rg e
Gro und
Table 3.
Functions table
Reset
Trigger
Threshold
Output
Low
High
High
High
x
x
Low
High
Low
Low
High
High
x
High
Low
Previous State
Note:
LOW: level voltage ≤ minimum voltage specified
HIGH: level voltage ≥ maximum voltage specified
x: irrelevant.
4/19
TS556
Electrical characteristics
3
Electrical characteristics
Table 4.
Static electrical characteristics
= +2 V, T = +25 °C, Reset to V (unless otherwise specified)
V
CC
amb
CC
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current (no load, high and low states)
130
400
400
ICC
µA
Tmin. ≤Tamb ≤Tmax
Control voltage level
1.2
1.1
1.3
1.4
1.5
VCL
V
Tmin. ≤Tamb ≤Tmax
Discharge saturation voltage (Idis = 1 mA)
0.05
0.2
VDIS
IDIS
V
nA
V
Tmin. ≤Tamb ≤Tmax
0.25
Discharge pin leakage current
1
100
Low level output voltage (Isink = 1 mA)
0.1
0.3
VOL
Tmin. ≤Tamb ≤Tmax
0.35
High level output voltage (Isource = -0.3 mA)
1.5
1.5
1.9
VOH
V
V
Tmin. ≤Tamb ≤Tmax
Trigger voltage
0.4
0.3
0.67
0.95
1.05
VTRIG
Tmin. ≤Tamb ≤Tmax
ITRIG
ITH
Trigger current
10
10
pA
pA
Threshold current
Reset voltage
0.4
0.3
1.1
1.5
2.0
VRESET
V
Tmin. ≤Tamb ≤Tmax
IRESET Reset current
10
pA
5/19
Electrical characteristics
Table 5.
TS556
Static electrical characteristics
V
= +3 V, T
= +25 °C, Reset to V (unless otherwise specified)
CC
amb CC
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current (no load, high and low states)
180
460
460
ICC
µA
Tmin ≤Tamb ≤Tmax
Control voltage level
1.8
1.7
2
2.2
2.3
VCL
V
Tmin ≤Tamb ≤Tmax
Discharge saturation voltage (Idis = 1 mA)
0.05
0.2
VDIS
IDIS
V
nA
V
Tmin ≤Tamb ≤Tmax
0.25
Discharge pin leakage current
1
100
Low level output voltage (Isink = 1 mA)
0.1
0.3
VOL
Tmin. ≤Tamb ≤Tmax
0.35
High level output voltage (Isource = -0.3 mA)
2.5
2.5
2.9
1
VOH
V
V
Tmin. ≤Tamb ≤Tmax
Trigger voltage
0.9
0.8
1.1
1.2
VTRIG
Tmin. ≤Tamb ≤Tmax
ITRIG
ITH
Trigger current
10
10
pA
pA
Threshold current
Reset voltage
0.4
0.3
1.1
1.5
2.0
VRESET
V
Tmin. ≤Tamb ≤Tmax
IRESET Reset current
10
pA
6/19
TS556
Electrical characteristics
Table 6.
Symbol
Dynamic electrical characteristics
= +3 V, T = +25 °C, Reset to V (unless otherwise specified)
V
CC
amb
CC
Parameter
Min.
Typ.
Max.
Unit
Timing accuracy (monostable) (1)
%
R = 10 kΩ, C = 0.1 µF VCC=+2 V,
1
1
VCC = +3 V
Timing shift with supply voltage variations
(Monostable) (1)
R = 10 kΩ, C = 0.1 µF, VCC = +3 V 0.3 V
Timing shift with temperature (1)
0.5
75
2
%/V
ppm/°C
MHz
%
Tmin. ≤Tamb ≤Tmax
Maximum astable frequency (2)
fmax
RA = 470 Ω, RB = 200 Ω, C = 200 pF
Astable frequency accuracy (2)
RA = RB = 1 kΩ to 100 kΩ, C = 0.1 µF
5
Timing shift with supply voltage variations
(astable mode) (2)
RA = RB = 10 kΩ, C = 0.1 µF, VCC = +3 to +5 V
0.5
25
%/V
ns
t
Output rise time (Cload = 10 pF)
R
t
Output fall time (Cload = 10 pF)
20
-
ns
F
tPD
Trigger propagation delay
100
350
ns
t
Minimum reset pulse width (Vtrig = +3 V)
ns
RPW
1. See Figure 4.
2. See Figure 6.
7/19
Electrical characteristics
Table 7.
TS556
Static electrical characteristics
V
= +5 V, T
= +25 °C, Reset to V (unless otherwise specified)
CC
amb CC
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current (no load, high and low states)
220
500
500
ICC
µA
Tmin. ≤Tamb ≤Tmax
Control voltage level
2.9
2.8
3.3
0.2
3.8
3.9
VCL
V
Tmin. ≤Tamb ≤Tmax
Discharge saturation voltage (Idis = 10 mA)
0.3
VDIS
IDIS
V
nA
V
Tmin. ≤Tamb ≤Tmax
0.35
Discharge pin leakage current
1
100
Low level output voltage (Isink = 8 mA)
0.3
0.6
0.8
VOL
Tmin. ≤Tamb ≤Tmax
High level output voltage (Isource = -2 mA)
4.4
4.4
4.6
VOH
V
V
Tmin. ≤Tamb ≤Tmax
Trigger voltage
1.36
1.26
1.67
1.96
2.06
VTRIG
Tmin. ≤Tamb ≤Tmax
ITRIG
ITH
Trigger current
10
10
pA
pA
Threshold current
Reset voltage
0.4
0.3
1.1
1.5
2.0
VRESET
V
Tmin. ≤Tamb ≤Tmax
IRESET Reset current
10
pA
8/19
TS556
Electrical characteristics
Table 8.
Symbol
Dynamic electrical characteristics
= +5 V, T = +25 °C, Reset to V (unless otherwise specified)
V
CC
amb
CC
Parameter
Min.
Typ.
Max.
Unit
Timing accuracy (monostable) (1)
R = 10 kΩ, C = 0.1 µF
2
%
Timing shift with supply voltage variations
(monostable) (1)
R = 10 kΩ, C = 0.1 µF, VCC = +5 V 1 V
Timing shift with temperature (1)
0.38
75
%/V
ppm/°C
MHz
%
Tmin. ≤Tamb ≤Tmax
(2)
Maximum Astable Frequency
fmax
RA = 470 Ω, RB = 200 Ω, C = 200 pF
Astable Frequency Accuracy (2)
2.7
3
RA = RB = 1 kΩ to 100 kΩ, C = 0.1 µF
Timing shift with supply voltage variations
(astable mode) (2)
RA = RB = 1 kΩ to 100 kΩ, C = 0.1 µF,
VCC = +5 to +12 V
0.1
%/V
t
Output rise time (Cload = 10 pF)
Output fall time (Cload = 10 pF)
Trigger propagation delay
25
20
ns
ns
ns
ns
R
t
-
F
tPD
100
350
t
Minimum reset pulse width (Vtrig = +5 V)
RPW
1. See Figure 4.
2. See Figure 6.
9/19
Electrical characteristics
Table 9.
TS556
Static electrical characteristics
= +12 V, T = +25 °C, Reset to V (unless otherwise specified)
V
CC
amb
CC
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current (no load, high and low states)
340
800
800
ICC
µA
Tmin. ≤Tamb ≤Tmax
Control voltage level
7.4
7.3
8
8.6
8.7
VCL
V
Tmin. ≤Tamb ≤Tmax
Discharge saturation voltage (Idis = 80 mA)
0.09
1.6
2.0
VDIS
IDIS
VOL
V
nA
V
Tmin. ≤Tamb ≤Tmax
Discharge pin leakage current
1
100
Low level output voltage (Isink = 50 mA)
1.2
2
Tmin. ≤Tamb ≤Tmax
2.8
High level output voltage (Isource = -10 mA)
10.5
10.5
11
4
VOH
V
V
Tmin. ≤Tamb ≤Tmax
Trigger voltage
3.2
3.1
4.8
4.9
VTRIG
Tmin. ≤Tamb ≤Tmax
ITRIG
ITH
Trigger current
10
10
pA
pA
Threshold current
Reset voltage
0.4
0.3
1.1
1.5
2.0
VRESET
V
Tmin. ≤Tamb ≤Tmax
IRESET Reset current
10
pA
Table 10. Dynamic electrical characteristics
V
= +12 V, T
= +25 °C, Reset to V (unless otherwise specified)
CC
amb CC
Symbol
Parameter
Min.
Typ.
Max.
Unit
Timing accuracy (monostable) (1)
R = 10 kΩ, C = 0.1 µF
4
%
Timing shift with supply voltage variations
(monostable)
R = 10 kΩ, C = 0.1 µF, VCC = +5 V 1 V
0.38
75
%/V
ppm/°C
MHz
%
Timing shift with temperature
Tmin. ≤Tamb ≤Tmax., VCC = +5 V
Maximum astable frequency
fmax
RA = 470 Ω, RB = 200 Ω, C = 200 pF, VCC = +5 V
Astable frequency accuracy (2)
2.7
3
RA = RB = 1 kΩ to 100 kΩ, C = 0.1 µF
Timing shift with supply voltage variations
(astable mode)
0.1
%/V
RA = RB = 1 kΩ to 100 kΩ, C = 0.1 µF,
VCC = 5 to +12 V
1. See Figure 4.
2. See Figure 6.
10/19
TS556
Electrical characteristics
Figure 3.
Supply current (per timer) versus supply voltage
300
200
100
0
4
8
12
16
SUPPLY VOLTAGE, VCC (V)
11/19
Application information
TS556
4
Application information
4.1
Monostable operation
In the monostable mode, the timer operates like a one-shot generator. Referring to figure 2,
the external capacitor is initially held discharged by a transistor inside the timer, as shown in
Figure 4.
Figure 4.
Application schematic
V
CC
Reset
R
Trigger
1/2
C
TS556
Out
Control Voltage
μ
0.01
F
The circuit triggers on a negative-going input signal when the level reaches 1/3 V . Once
CC
triggered, 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.
It can be noticed that since the charge rate and the threshold level of the comparator are
both directly proportional to the supply voltage, the timing interval is independent of the
supply. Applying a negative pulse simultaneously to the Reset terminal (pin 4) and the
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 the positive edge of the reset pulse.
While the reset pulse is applied, the output is driven to the LOW state.
When a negative trigger pulse is applied to pin 2, the flip-flop is set, releasing the short
circuit across the external capacitor and driving the output HIGH. The voltage across the
capacitor increases exponentially with the time constant τ = R x C.
When the voltage across the capacitor equals 2/3 V , the comparator resets the flip-flop
CC
which then discharges the capacitor rapidly and drives the output to its LOW state.
Figure 5 shows the actual waveforms generated in this mode of operation.
When Reset is not used, it should be tied high to avoid any possible or false triggering.
Figure 5.
Timing diagram
t = 0.1 ms / div
INPUT = 2.0V/div
OUTPUT VOLTAGE = 5.0V/div
CAPACITOR VOLTAGE = 2.0V/div
μ Ω
Ω
, C = 0.01 F , R = 1.0k
L
R = 9.1k
12/19
TS556
Application information
4.2
Astable operation
When the circuit is connected as shown in Figure 6 (pins 2 and 6 connected) it triggers itself
and runs as a multivibrator. The external capacitor charges through R and R and
A
B
discharges through R only. Thus the duty cycle may be precisely set by the ratio of these
B
two resistors.
In the astable mode of operation, C charges and discharges between 1/3 V and 2/3 V
.
CC
CC
As in the triggered mode, the charge and discharge times and therefore frequency, are
independent of the supply voltage.
Figure 6.
Application schematic
V
CC
Reset
RA
Out
1/2
R
B
TS556
Control
Voltage
C
μ
0.01
F
Figure 7 shows actual waveforms generated in this mode of operation.
The charge time (output HIGH) is given by:
t1 = 0.693 (R + R ) C
A
B
and the discharge time (output LOW) by:
t2 = 0.693 x R x C
B
Thus the total period T is given by:
T = t1 + t2 = 0.693 (R + 2R ) C
A
B
The frequency of oscillation is then:
1
T
1.44
(RA + 2RB)C
f = --- = -------------------------------------
The duty cycle is given by:
RB
D = ---------------------------
RA + 2RB
Figure 7.
Timing diagram
t = 0.5 ms / div
OUTPUT VOLTAGE = 5.0V/div
CAPACITOR VOLTAGE = 1.0V/div
μ
Ω Ω
= R = 4.8 k , C = 0.1 F , R = 1.0k
L
B
R
A
13/19
Package information
TS556
5
Package information
In order to meet environmental requirements, STMicroelectronics offers these devices in
®
ECOPACK packages. These packages have a lead-free second level interconnect. The
category of second level interconnect is marked on the package and on the inner box label,
in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics
trademark. ECOPACK specifications are available at: www.st.com.
14/19
TS556
Package information
5.1
DIP14 package information
Figure 8.
DIP14 package mechanical drawing
Table 11. DIP14 package mechanical data
Dimensions
Millimeters
Typ.
Inches
Ref.
Min.
Max.
Min.
Typ.
Max.
A
A1
A2
b
5.33
0.21
0.38
2.92
0.36
1.14
0.20
18.67
7.62
6.10
0.015
0.11
3.30
0.46
1.52
0.25
19.05
7.87
6.35
2.54
15.24
7.62
4.95
0.56
1.78
0.36
19.69
8.26
7.11
0.13
0.018
0.06
0.009
0.75
0.31
0.25
0.10
0.60
0.30
0.19
0.022
0.07
0.01
0.77
0.32
0.28
0.014
0.04
b2
c
0.007
0.73
D
E
0.30
E1
e
0.24
e1
eA
eB
L
10.92
3.81
0.43
0.15
2.92
3.30
0.11
0.13
Note:
D and E1 dimensions do not include mold flash or protrusions. Mold flash or protrusions
shall not exceed 0.25 mm.
15/19
Package information
TS556
5.2
SO-14 package information
Figure 9.
SO-14 package mechanical drawing
Table 12. SO-14 package mechanical data
Dimensions
Millimeters
Typ.
Inches
Typ.
Ref.
Min.
Max.
Min.
Max.
A
A1
A2
B
1.35
0.10
1.10
0.33
0.19
8.55
3.80
1.75
0.25
1.65
0.51
0.25
8.75
4.0
0.05
0.004
0.04
0.068
0.009
0.06
0.01
0.02
C
0.007
0.33
0.009
0.34
D
E
0.15
0.15
e
1.27
0.05
H
5.80
0.25
0.40
6.20
0.50
1.27
0.22
0.009
0.015
0.24
0.02
0.05
h
L
k
8° (max.)
ddd
0.10
0.004
Note:
D and F dimensions do not include mold flash or protrusions. Mold flash or protrusions must
not exceed 0.15 mm.
16/19
TS556
Ordering information
6
Ordering information
Table 13. Order codes
Order code
TS556CN
Temperature range
Package
Packaging
Marking
DIP14
Tube
TS556CN
0°C, +70°C
TS556CD
Tube or
Tape & reel
SO-14
DIP14
SO-14
DIP14
SO-14
556C
TS556IN
556I
TS556CDT
TS556IN
Tube
-40°C, +125°C
-55°C, +125°C
TS556ID
Tube or
Tape & reel
TS556IDT
TS556MN
Tube
TS556MN
556M
TS556MD
Tube or
Tape & reel
TS556MDT
17/19
Revision history
TS556
7
Revision history
Table 14. Document revision history
Date
Revision
Changes
01-Feb-2003
1
Initial release.
Document reformatted.
Added output current, ESD and thermal resistance values in
Table 1: Absolute maximum ratings.
28-Oct-2008
2
Added output current values in Table 2: Operating conditions.
Updated Section 5.1: DIP14 package information and
Section 5.2: SO-14 package information.
18/19
TS556
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2008 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
19/19
相关型号：
©2020 ICPDF网 联系我们和版权申明