Datasheet TS556IN, TS556ID, TS556I, TS556CD, TS556CN Datasheet (SGS Thomson Microelectronics)

.

VERYLOW POWERCONSUMPTION:

.

100µA typat VCC=5V

.

HIGH MAXIMUM ASTABLE FREQUENCY

2.7MHz

.

PIN-TO-PINAND FUNCTIONALLY
COMPATIBLEWITH BIPOLARNE555

.

VOLTAGERANGE : +2Vto +18V

.

HIGHOUTPUT CURRENT CAPABILITY

.

SUPPLY CURRENT SPIKES REDUCED
DURING OUTPUTTRANSITIONS

.

HIGHINPUT IMPEDANCE: 1012Ω

.

OUTPUT COMPATIBLE WITH TTL,CMOS
ANDLOGIC MOS

TS556C,I,M

LOW POWER DUALCMOS TIMERS

N

DIP14

(Plastic Package)

ORDER CODES

Part Number

TS556C 0
TS556I -40, +125oC ●●
TS556M -55, +125oC ●●

Examples : TS556CD , TS556IN

(Plastic Micropackage)

Temperature

Range

o

C, +70oC ●●

D

SO14

Package

ND

DESCRIPTION

TheTS556isa dualCMOStimerwhichoffersvery
low consumption(Icc
Icc
(f
Thus, eitherin Monostable or Astable mode, tim­ing remainsvery accurate.
The TS556 provides reduced supply current
spikes during output transitions, which enables
the useof lower decouplingcapacitorscompared
to those required by bipolarNE556.
Timing capacitors can also be minimized due to
high input impedance (10

October 1997

NE556= 6mA) and high frequency

(TYP)

TS556=2.7MHz -f

(max.)

TS556= 200µA

(TYP)

(max.)

12

Ω).

NE556=0.1MHz)

PIN CONNECTIONS (top view)

Discharge

Threshold

Control

Voltage

Reset

Output

Trigger

GND

1
2
3
4
5
6
7

14
13
12
11
10

9
8

+V

S

Discharge
Threshold

Control
Voltage

Reset
Output
Trigger

1/11

TS556C,I,M

BLOCK DIAGRAM

Threshold

Control

Voltage

Tr igger

2/12

3/11

6/8

V

CC

14

R

R

R

7

Ground

+

-

+

-

Reset

4/10

R1

Q

A

B

R

S

TS556

5/9

1/13

Output

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

TS556C
TS556I
TS556M

0 to +70

-40 to +125

-55 to +125

Storage Temperature Range -65 to +150

2/11

T

T

OPER

STG

o

C

o

C

o

C

SCHEMATIC DIAGRAM (1/2 TS556)

Τ34

TS556C,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

R3

R4

50k

R5

50k Ω

50k Ω

Ω

R6

50k

3/11

TS556C,I,M

OPERATINGCONDITIONS

Symbol Parameter Value Unit

V

STATIC ELECTRICAL CHARACTERISTICS

V

CC

Symbol Parameter

I

V

V

V

V

V

I
I

V

reset

I

reset

i

Supply Voltage +2 to +16 V

CC

= +2V, T

=+25oC, Resetto VCC(unlessotherwise specified)

amb

TS556C-TS556I-TS556M

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

≤T

≤T

≤T

≤T

≤T

max

max

max

max

max

max

130 400

.

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

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

400

1.5

0.25

0.35

1.05

2.0

Unit

µA

V

V

V

V

V

V

4/11

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

V

V

V

V

I
I

reset

I

reset

I

=+25oC, Resetto VCC(unlessotherwise specified)

amb

=+25oC

T

amb

T

. ≤ T

≤T

≤T

≤T

≤T

≤T

≤T

≤T

max

max

max

max

max

max

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

TS556C,I,M

TS556C-TS556I-TS556M

Min. Typ Max.

2.9

2.8

4.4

4.4

1.36

1.26

0.4

0.3

220 500

3.3 3.8

0.2 0.3

0.3 0.6

4.6

1.67 1.96

1.1 1.5

500

3.9

0.35

0.8

2.06

2.0

Unit

µA

V

V

V

V

V

V

5/11

TS556C,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

V

V

V

V

I
I

reset

I

reset

I

= +25oC, Reset to VCC(unlessotherwisespecified)

amb

=+25oC

T

amb

T

. ≤ T

≤T

≤T

≤T

≤T

≤T

≤T

≤T

max

max

max

max

max

max

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

TS556C-TS556I-TS556M

Min. Typ Max.

340 800

800

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

V

V

V

V

V

6/11

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= 200Ω, C = 200pF , VCC= + 5V 2.7

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

t

rpw

Notes : 1. SeeFigure 2

TriggerPropagation Delay (VCC= + 5V) 100 ns

pd

Minimum Reset Pulse Width(V

2. SeeFigure 4

≤T

≤T

amb

max.,VCC

=1kΩto 100kΩ,C=0.1µF

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

= + 5V +/-1V 0.38

CC

=+5V

= 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

TS556C,I,M

TS556C-TS556I-TS556M

Min Typ Max

1
2
4

75

3
3

0.1

Unit

%

%/V

ppm/°C

MHz

%

%/V

7/11

TS556C,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 dischargedby a transistor inside
the timer.

Figure2

Thecircuittriggersona negative-goinginputsignal
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 chargerateand thethreshold
level of the comparator are both directly propor­tional to supplyvoltage, the timing intervalis inde­pendent of supply. Applying a negative pulse
simultaneouslyto the Reset terminal (pin 4 or 10)
and the Trigger terminal (pin 2 or 8) during the
timing cycledischargesthe externalcapacitorand
causesthecycletostart over.Thetimingcyclenow
starts on the positive edge of the reset pulse.
During the time the reset pulse is applied, the
output is driven to its LOWstate.
When a negative trigger pulse is applied to the
trigger terminal, the flip-flop is set, releasing the
shortcircuit acrossthe externalcapacitorand driv­ing the output HIGH. The voltage across the ca­pacitor increases exponentially with the time
constant τ =R xC.
Whenthe voltage across the capacitor equals 2/3
V

, thecomparatorresetsthe flip-flopwhich then

CC

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

Trigger

8/11

V

CC

Out

Reset

1/2

TS556

R

C

Control Voltage

µ

0.01 F

Figure3

t = 0.1 ms / div

INPUT = 2.0V/div

OUTPUT VOLTAGE = 5.0V/div

CAPACITOR VOLTAGE = 2.0V/div

Ω

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

µ

L

Ω

TS556C,I,M

ASTABLEOPERATION
When the circuitis connectedas shown in figure 4

it triggersitselfandfree runsas amultivibrator.The
externalcapacitor chargesthrough R
discharges through R

only. Thus the duty cycle

B

andRBand

A

may be precisely set 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.
Figure5 shows actualwaveformsgeneratedinthis

Figure4

V

CC

Reset

R

A

Out

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

t1 = 0.693 (R

A+RB

)C
and the discharge time (outputLOW) 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 cycle is given by : D =

=

(R

A

1.44
+ 2RB)C

R

B

RA+ 2R

B

Figure5

t = 0.5ms / div

OUTPUTVOLTAGE = 5.0V/div

Control
Voltage

µ

0.01 F

1/2

TS556

R

B

C

CAPACITOR VOLTAGE = 1.0V/div

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

AB

µ

L

ΩΩ

9/11

TS556C,I,M

PACKAGE MECHANICAL DATA

14 PINS- PLASTICDIP

Dimensions

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

Millimeters Inches

a1 0.51 0.020

B 1.39 1.65 0.055 0.065

b 0.5 0.020

b1 0.25 0.010

D 20 0.787
E 8.5 0.335

e 2.54 0.100

e3 15.24 0.600

F 7.1 0.280

i 5.1 0.201

L 3.3 0.130

Z 1.27 2.54 0.050 0.100

PM-DIP14.EPS

DIP14.TBL

10/11

PACKAGE MECHANICAL DATA

14 PINS- PLASTICMICROPACKAGE (SO)

TS556C,I,M

Dimensions

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

Millimeters Inches

A 1.75 0.069
a1 0.1 0.2 0.004 0.008
a2 1.6 0.063

b 0.35 0.46 0.014 0.018

b1 0.19 0.25 0.007 0.010

C 0.5 0.020

c1 45

o

(typ.)
D 8.55 8.75 0.336 0.334
E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 7.62 0.300

F 3.8 4.0 0.150 0.157

G 4.6 5.3 0.181 0.208

L 0.5 1.27 0.020 0.050

M 0.68 0.027

S8

Information furnished is believed tobe accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use of suchinformation nor for any infringement of patents or other rights of third parties which may result
from its use. No license isgranted by implication or otherwiseunder anypatent or patent rights of SGS-THOMSON Microelectronics.
Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
information previously supplied. SGS-THOMSON Microelectronics products are not authorized for useas critical components in life
support devices or systems withoutexpress written approval of SGS-THOMSON Microelectronics.

o

(max.)

SO14.TBL

 1997 SGS-THOMSON Microelectronics – Printed in Italy – AllRights Reserved

SGS-THOMSONMicroelectronics GROUP OF COMPANIES

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ORDER CODE : PM-SO14.EPS

11/11