SGS Thomson Microelectronics TS555CD, TS555C, TS555MN, TS555MD, TS555IN Datasheet



LOW POWER SINGLE CMOS TIMERS

.

VERYLOW POWERCONSUMPTION:

.

100µA typat VCC=5V

.

HIGH MAXIMUM ASTABLE FREQUENCY

2.7MHz

.

PIN-TO-PINAND FUNCTIONALLY COMPATIBLEWITH BIPOLARNE555

.

VOLTAGERANGE : +2Vto +18V

.

HIGHOUTPUTCURRENTCAPABILITY

.

SUPPLY CURRENT SPIKES REDUCED DURING OUTPUTTRANSITIONS

.

HIGHINPUTIMPEDANCE: 1012Ω

.

OUTPUT COMPATIBLE WITH TTL,CMOS ANDLOGIC MOS

TS555C,I,M

N

DIP8

(Plastic Package)

(Thin Shrink Small Outline Package)

ORDER CODES

Part Number

TS555C 0 TS555I -40, +125oC ●●● TS555M -55, +125oC ●●●

Examples : TS555CD , TS555IN

(Plastic Micropackage)

P

TSSOP8

Temperature

Range

o

C, +70oC ●●●

D

SO8

Package

NDP

DESCRIPTION

The TS555 is a single CMOS timer which offers very low consumption (Icc Icc (f Thus,eitherinMonostableorAstablemode,timing remainsvery accurate. The TS555providesreducedsupplycurrentspikes during output transitions,which enables the use of lower decoupling capacitors compared to those required by bipolar NE555. Timing capacitors can also be minimized due to high input impedance (10

January 1999

NE555= 3mA) and high frequency

(TYP)

TS555= 2.7MHz - f

(max.)

TS555= 100µA

(TYP)

NE555= 0.1 MHz)

(max.)

12

Ω).

PIN CONNECTIONS (top view)

GND

Trigger

Output

Reset

1 2 3 4

8 7 6 5

V

CC

Discharge Threshold

Control Voltage

1/12

TS555C,I,M

BLOCK DIAGRAM

Threshold

Control

Voltage

Tr igger

V

CC

84

R

6

5

2

Ground

+

-

R

+

-

R

1

Reset

R1

Q

A

B

R

S

TS555

3

Output

7

Discharge

RESET TRIGGER THRESHOLD OUTPUT

Low x x Low High Low x High High High High Low High High Low Previous State

LOW HIGH X

↔ Level Voltage ≤ Min voltage specified ↔ Level Voltage ≥ Max voltage specified ↔ Irrelevant

ABSOLUTEMAXIMUM RATINGS

Symbol Parameter Value Unit

V

CC

T

J

SupplyVoltage +18 V JunctionTemperature +150

THERMALCHARACTERISTICS

Symbol Parameter Value Unit

Operating Temperature Range

TS555C TS555I TS555M

0 to +70

-40 to +125

-55 to +125

Storage Temperature Range -65 to +150

2/12

T

OPER

STG

o

C

o

C

o

C

SCHEMATIC DIAGRAM

Τ34

TS555C,I,M

Output

Τ35

Τ33

Discharge

Τ31

Τ32

Τ29

Τ27 Τ30

Τ26

Τ25

Τ21

CC

V

Τ20

Trigger

Τ24

Τ28

Τ23

Τ17

Τ22

RESET

Τ16

GND

Τ18 Τ19

Τ15

Τ12 Τ13

Τ14

Τ11

R7

Τ10

Τ2

Threshold

Τ9

Τ7

Τ8

Τ4

Τ5 Τ6

Τ1

Ω

R1

50k

Ω

R2

50k

Control Voltage

Ω

50k

R4

50k Ω

R3

Ω

R5

50k

R6

50k Ω

3/12

TS555C,I,M

OPERATINGCONDITIONS

Symbol Parameter Value Unit

V

STATIC ELECTRICAL CHARACTERISTICS

V

CC

Symbol Parameter

I

V

I I

V

reset

I

reset

I

Supply Voltage +2 to +16 V

CC

= +2V, T

=+25oC, Resetto VCC(unlessotherwise specified)

amb

TS555C-TS555I-TS555M

Min. Typ Max.

Supply Current (no load, High and Low States)

CC

Control Voltage

CL

Discharge Saturation Voltage (I

dis

Low Level Output Voltage(I

OL

High Level Output Voltage (I

OH

TriggerVoltage

trig

Trigger Current 10 pA

trig

Threshold Current 10 pA

TH

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

≤T

max

65 200

.

1.2

.

= 1mA)

dis

1.1

1.3 1.4

0.05 0.2

.

= 1mA)

sink

0.1 0.3

.

= -0.3mA)

source

.

1.5

0.4

0.3

1.9

0.67 0.95

Reset Voltage

T

amb

T

min

=+25oC

. ≤ T

amb

≤T

max

.

0.4

0.3

1.1 1.5

Reset Current 10 pA Discharge Pin Leakage Current 1 100 nA

dis

200

1.5

0.25

0.35

1.05

2.0

Unit

µA

V

4/12

STATIC ELECTRICAL CHARACTERISTICS (continued)

= +5V, T

V

CC

Symbol Parameter

Supply Current (no load, High and Low States)

CC

Control Voltage

CL

Discharge Saturation Voltage (I

dis

Low Level Output Voltage(I

OL

High Level Output Voltage (I

OH

TriggerVoltage

trig

Trigger Current 10 pA

trig

Threshold Current 10 pA

TH

Reset Voltage

Reset Current 10 pA Discharge Pin Leakage Current 1 100 nA

dis

V

I

V

I I

reset

I

reset

I

=+25oC, Resetto VCC(unlessotherwise specified)

amb

=+25oC

T

amb

T

. ≤ T

≤T

max

.

= 10mA)

dis

.

= 8mA)

sink

.

= -2mA)

source

.

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

TS555C,I,M

TS555C-TS555I-TS555M

Min. Typ Max.

2.9

2.8

4.4

1.36

1.26

0.4

0.3

110 250

3.3 3.8

0.2 0.3

0.3 0.6

4.6

1.67 1.96

1.1 1.5

250

3.9

0.35

0.8

2.06

2.0

Unit

µA

V

5/12

TS555C,I,M

STATIC ELECTRICAL CHARACTERISTICS (continued)

= +12V, T

V

CC

Symbol Parameter

Supply Current (no load, High and Low States)

CC

Control Voltage

CL

Discharge Saturation Voltage (I

dis

Low Level Output Voltage(I

OL

High Level Output Voltage (I

OH

TriggerVoltage

trig

Trigger Current 10 pA

trig

Threshold Current 10 pA

TH

Reset Voltage

Reset Current 10 pA Discharge Pin Leakage Current 1 100 nA

dis

V

I

V

I I

reset

I

reset

I

= +25oC, Reset to VCC(unlessotherwisespecified)

amb

=+25oC

T

amb

T

. ≤ T

≤T

max

.

= 80mA)

dis

.

= 50mA)

sink

.

= -10mA)

source

.

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

T

amb

T

min

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

=+25oC

. ≤ T

amb

TS555C-TS555I-TS555M

Min. Typ Max.

170 400

400

7.4

7.3

8 8.6

8.7

0.09 1.6

2.0

1.2 2

2.8

10.5

11

10.5

3.2

3.1

0.4

0.3

4 4.8

4.9

1.1 1.5

2.0

Unit

µA

V

6/12

DYNAMICELECTRICAL CHARACTERISTICS

=+25oC, Reset to VCC(unlessotherwisespecified)

T

amb

Symbol Parameter

TimingAccuracy (Monostable) - (note 1)

R = 10kΩ , C = 0.1µF

Timing Shift with supply voltage variations (Monostable)

R = 10kΩ , C = 0.1µF, V

Timing Shift with temperature

T

min.

f

max

Maximum astable frequency

= 470Ω ,RB= 200

R

A

Astable frequency accuracy - (note 2)

R

A=RB

Timing Shift with supply voltage variations (Astable mode)

R

A=RB

t

Output Rise Time (VCC=+5V,C

r

Output Fall Time (VCC=+5V,C

t

f

t

rpw

Notes : 1. See Figure 2

TriggerPropagation Delay (VCC= + 5V) 100 ns

pd

Minimum Reset Pulse Width (V

2. See Figure 4

≤T

amb

max.,VCC

=1kΩto 100kΩ,C=0.1µF

=1kΩto 100kΩ, C = 0.1µF,VCC= 5 to+ 12V

= + 5V +/-1V 0.38

CC

=+5V

Ω,

C = 200pF , VCC= + 5V 2.7

= 10pF) 25 ns

load

= 10pF) 20 - ns

load

= + 5V) 350 ns

trig

V V V

V V

CC CC CC

CC CC

=+5V

=+2V =+5V = +12V

= + 12V

TS555C,I,M

TS555C-TS555I-TS555M

Min Typ Max

1 2 4

75

3 3

0.1

Unit

%

%/V

ppm/°C

MHz

%

%/V

7/12

TS555C,I,M

TYPICALCHARACTERISTICS Figure 1 : Supply Current (each timer) versus

SupplyVoltage

300

µ

CC

200

100

SUPPLY CURRENT, I ( A)

0481216

SUPPLY VOLTAGE, V (V)

CC

APPLICATION INFORMATION

MONOSTABLEOPERATION In the monostable mode,the timer functions as a

one-shot. Referringto figure2 the externalcapacitor is initiallyheld discharged by a transistorinside the timer.

Figure2

Thecircuittriggersona negative-goinginput signal whenthelevelreaches1/3V

. Oncetriggered,the

CC

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. Noticethat sincethe chargerate and thethreshold level of the comparator are both directly proportional to supply voltage, the timing intervalisindependent of supply. Applying a negative pulse simultaneouslyto theResetterminal(pin4) andthe Trigger terminal (pin 2) during the timing cycle dischargesthe external capacitor and causes the cycle to start over. The timing cycle now starts on thepositiveedgeof theresetpulse.Duringthetime the resetpulseis applied,the output is driven toits LOW state. When a negative trigger pulse is applied to pin 2, the flip-flopis set,releasing the shortcircuit across theexternalcapacitoranddrivingtheoutputHIGH. The voltage across the capacitor increases exponentiallywith the time constant τ =RxC. Whenthe voltage across the capacitor equals 2/3 V

, thecomparatorresetsthe flip-flopwhich then

CC

discharges the capacitor rapidly and drives the output to its LOW state. Figure3 showsthe actualwaveformsgeneratedin this mode of operation. When Reset is not used, it should be tied high to avoid any possible or false triggering.

V

CC

Trigger

Out 3

8/12

Reset

48

2

TS555

1

7

6

5

Control Voltage

R

C

0.01 F

Figure3

t = 0.1ms / div

INPUT = 2.0V/div

OUTPUT VOLTAGE = 5.0V/div

µ

CAPACITOR VOLTAGE = 2.0V/div

Ω

R = 9.1k , C= 0.01 F , R = 1.0k

µ

Ω

L

TS555C,I,M

ASTABLEOPERATION When the circuitis connectedas shownin figure 4

(pin 2 and 6 connected) it triggers itself and free runs as a multivibrator. The external capacitor charges through R through R

only.Thus the duty cycle may be pre-

B

and RBand discharges

A

ciselyset by the ratio of these two resistors. In the astable mode of operation, C charges and dischargesbetween1/3 V

and2/3 VCC.Asinthe

CC

triggered mode, the charge and discharge times and therefore frequency, are independent of the supplyvoltage. Figure5showsactualwaveformsgeneratedin this

Figure4

V

CC

Reset

R

A

8

7

Out

4

3

mode of operation. The charge time (output HIGH)is givenby :

t1 = 0.693 (R

A+RB

)C and the dischargetime (output LOW) by : t2 = 0.693 (R

B

)C Thus the total period T is given by : T = t1 + t2 = 0.693 (R

+2RB)C

A

The frequencyof oscillationis then :

1

f

=

T

The duty cycleis given by : D

=

(R

A

1.44

+ 2RB)C

=

RA+ 2R

R

B

Figure5

t = 0.5 ms / div

OUTPUTVOLTAGE = 5.0V/div

Control Voltage

µ

0.01 F

R

TS555

5

1

6

2

B

C

CAPACITOR VOLTAGE = 1.0V/div

R = R = 4.8 k , C = 0.1 F , R = 1.0k

AB

µ

L

ΩΩ

9/12

TS555C,I,M

PACKAGE MECHANICAL DATA

8 PINS- PLASTICDIP

Dimensions

A 3.32 0.131

a1 0.51 0.020

B 1.15 1.65 0.045 0.065

b 0.356 0.55 0.014 0.022

b1 0.204 0.304 0.008 0.012

D 10.92 0.430 E 7.95 9.75 0.313 0.384

e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300

F 6.6 0260

i 5.08 0.200 L 3.18 3.81 0.125 0.150 Z 1.52 0.060

Min. Typ. Max. Min. Typ. Max.

Millimeters Inches

10/12

PACKAGE MECHANICAL DATA

8 PINS- PLASTICMICROPACKAGE (SO)

TS555C,I,M

Dimensions

A 1.75 0.069 a1 0.1 0.25 0.004 0.010 a2 1.65 0.065 a3 0.65 0.85 0.026 0.033

b 0.35 0.48 0.014 0.019

b1 0.19 0.25 0.007 0.010

C 0.25 0.5 0.010 0.020

c1 45

D 4.8 5.0 0.189 0.197

E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 3.81 0.150

F 3.8 4.0 0.150 0.157

L 0.4 1.27 0.016 0.050 M 0.6 0.024 S8

Min. Typ. Max. Min. Typ. Max.

Millimeters Inches

o

(typ.)

o

(max.)

11/12

TS555C,I,M

PACKAGE MECHANICAL DATA

8 PINS- THIN SHRINK SMALL OUTLINEPACKAGE

Dim.

Min. Typ. Max. Min. Typ. Max.

Millimeters Inches

A 1.20 0.05

A1 0.05 0.15 0.01 0.006 A2 0.80 1.00 1.05 0.031 0.039 0.041

b 0.19 0.30 0.007 0.15

c 0.09 0.20 0.003 0.012 D 2.90 3.00 3.10 0.114 0.118 0.122 E 6.40 0.252

E1 4.30 4.40 4.50 0.169 0.173 0.177

e 0.65 0.025

k0

o

8

o

0

o

8

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 products arenot authorized for useas critical components in life support devices orsystems without express written approval of STMicroelectronics.

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12/12

SGS Thomson Microelectronics TS555CD, TS555C, TS555MN, TS555MD, TS555IN Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual