Datasheet

ManualsBrandsST ManualsClockSingle CMOS Timer, 2.7MHz, 100mA

This is information on a product in full production.

June 2015 DocID4077 Rev 4 1/19

TS555

Low-power single CMOS timer

Datasheet - production data

Features

• Very low power consumption:

– 110 µA typ at V

= 5 V

– 90 µa typ at V

= 3 V

• High maximum astable frequency of 2.7 MHz

• Pin-to-pin functionally-compatible with bipolar

NE555

(a)

• Wide voltage range: +2 V to +16 V

• Supply current spikes reduced during output

transitions

• High input impedance: 10

• Output compatible with TTL, CMOS and logic

MOS

Description

The TS555 is a single CMOS timer with very low

consumption:

cc(TYP)

TS555 = 110 µA at V

= +5 V versus

cc(TYP)

NE555

(a)

= 3 mA),

and high frequency:

f(max.)

TS555 = 2.7 MHz versus

(max)

NE555

(a)

= 0.1 MHz).

Timing remains accurate in both monostable and

astable mode.

The TS555 provides reduced supply current

spikes during output transitions, which enable the

use of lower decoupling capacitors compared to

those required by bipolar NE555

(a)

With the high input impedance (10

Ω), timing

capacitors can also be minimized.

a. Terminated product

















*1'

7ULJJHU

2XWSXW

5HVHW

&RQWURO

9ROWDJH

'LVFKDUJH

7KUHVKROG

SO8

(plastic micropackage)

Pin connections

(top view)

www.st.com

Summary of content (19 pages)

PAGE 1
TS555 Low-power single CMOS timer Datasheet - production data Description The TS555 is a single CMOS timer with very low consumption: (Icc(TYP) TS555 = 110 µA at VCC = +5 V versus Icc(TYP) NE555(a) = 3 mA), SO8 (plastic micropackage) and high frequency: (ff(max.) TS555 = 2.7 MHz versus f(max) NE555(a) = 0.1 MHz). Pin connections (top view) *1' 9&& 7ULJJHU 'LVFKDUJH 2XWSXW 7KUHVKROG 5HVHW &RQWURO 9ROWDJH Timing remains accurate in both monostable and astable mode.
PAGE 2
Contents TS555 Contents 1 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 2 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5 4.1 Monostable operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 3
TS555 1 Absolute maximum ratings and operating conditions Absolute maximum ratings and operating conditions Table 1.
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5 4/19 5 DocID4077 Rev 4 N 7 5 N 7 5 N 7 5 N 7 5 &RQWURO 9ROWDJH N 7 4 4 4 4 4 7KUHVKROG 4 4 4 5 4 4 4 4 4 4 4 *1' 4 4 5(6(7 4 4 7ULJJHU 4 4 4 4 4 4 4 4 4 4 4 4 4 4 'LVFKDUJH 4 2XWSXW 2 N 7 9 && Schematic diagrams TS555 Schematic diagrams Figure 1.
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TS555 Schematic diagrams Figure 2. Block diagram 6## 2ESET 76 5 5 4HRESHOLD 4 /UTPUT $ISCHARGE 5 #ONTROL 6OLTAG E $ 6 5 4RIGGER % 5 'ROUND Table 3.
PAGE 6
Electrical characteristics 3 TS555 Electrical characteristics Table 4. Static electrical characteristics VCC = +2 V, Tamb = +25 °C, reset to VCC (unless otherwise specified) Symbol Min. Typ. Max. Unit 65 200 200 µA 1.3 1.4 1.5 0.05 0.2 0.25 1 100 0.1 0.3 0.
PAGE 7
TS555 Electrical characteristics Table 5. Static electrical characteristics VCC = +3 V, Tamb = +25 °C, reset to VCC (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit 90 230 230 µA 2 2.2 2.3 0.05 0.2 0.25 1 100 0.1 0.3 0.
PAGE 8
Electrical characteristics TS555 Table 6. Dynamic electrical characteristics VCC = +3 V, Tamb = +25 °C, reset to VCC (unless otherwise specified) Symbol Parameter Min. Timing accuracy (monostable)(1) R = 10 kΩ, C = 0.1 µF VCC = 2 V VCC = 3 V fmax 0.5 Timing shift with temperature (1) Tmin ≤Tamb ≤Tmax 75 Maximum astable frequency (2) RA = 470 Ω, RB = 200 Ω, C = 200 pF Timing shift with supply voltage variations (astable mode) (2) RA = RB = 1 kΩ to 100 kΩ, C = 0.1 µF, VCC = 3 to 5 V — 2 5 0.
PAGE 9
TS555 Electrical characteristics Table 7. Static electrical characteristics VCC = +5 V, Tamb = +25 °C, reset to VCC (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit 110 250 250 µA 3.3 3.8 3.9 0.2 0.3 0.35 1 100 0.3 0.6 0.
PAGE 10
Electrical characteristics m TS555 Table 8. Dynamic electrical characteristics VCC = +5 V, Tamb = +25 °C, reset to VCC (unless otherwise specified) Symbol Parameter Min. Timing accuracy (monostable) (1) R = 10 kΩ, C = 0.1 µF 75 Maximum astable frequency (2) RA = 470 Ω, RB = 200 Ω, C = 200 pF 2.7 3 Output rise time (Cload = 10 pF) 25 tF Output fall time (Cload = 10 pF) 20 Trigger propagation delay 100 Minimum reset pulse width (Vtrig = 5 V) 350 2.
PAGE 11
TS555 Electrical characteristics Table 9. Static electrical characteristics VCC = +12 V, Tamb = +25 °C, reset to VCC (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit 170 400 400 µA 8 8.6 8.7 0.09 1.5 2.0 1 100 1.2 2 2.
PAGE 12
Electrical characteristics TS555 Table 10. Dynamic electrical characteristics VCC = +12 V, Tamb = +25 °C, reset to VCC (unless otherwise specified) Symbol Parameter Min. Timing accuracy (monostable) (1) R = 10 kΩ, C = 0.1 µF, VCC = +12 V Astable frequency accuracy RA = RB = 1 kΩ to 100 kΩ, C = 0.1 µF, VCC = +12 V Timing shift with supply voltage variations (astable mode) RA = RB = 1 kΩ to 100 kΩ, C = 0.1 µF, VCC = 5 to +12 V 3 0.1 2. See Figure 6 Figure 3.
PAGE 13
TS555 Application information 4 Application information 4.1 Monostable operation In monostable mode, the timer operates like a one-shot generator. The external capacitor is initially held discharged by a transistor inside the timer, as shown in Figure 4. Figure 4. Application schematic 9&& 5HVHW 5 7ULJJHU 76 2XW & &RQWURO 9ROWDJH M) The circuit triggers on a negative-going input signal when the level reaches 1/3 VCC.
PAGE 14
Application information 4.2 TS555 Astable operation When the circuit is connected as shown in Figure 6 (pins 2 and 6 connected) it triggers itself and runs as a multi-vibrator. The external capacitor charges through RA and RB and discharges through RB only. Therefore, the duty cycle may be precisely set by the ratio of these two resistors. In the astable mode of operation, C charges and discharges between 1/3 VCC and 2/3 VCC.
PAGE 15
TS555 5 Package information Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark.
PAGE 16
Package information 5.1 TS555 SO8 package information Figure 8. SO8 package outline Table 11. SO8 mechanical data Dimensions Ref. Millimeters Min. Typ. A Max. Min. Typ. 1.75 0.25 Max. 0.069 A1 0.10 A2 1.25 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 D 4.80 4.90 5.00 0.189 0.193 0.197 E 5.80 6.00 6.20 0.228 0.236 0.244 E1 3.80 3.90 4.00 0.150 0.154 0.157 e 0.004 0.010 0.049 1.27 0.050 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.
PAGE 17
TS555 6 Ordering information Ordering information Table 12.
PAGE 18
Revision history 7 TS555 Revision history Table 13. Document revision history Date Revision 01-Feb-2003 1 Initial release. 03-Nov-2008 2 Document reformatted. Added output current, ESD and thermal resistance values in Table 1: Absolute maximum ratings. Added output current values in Table 2: Operating conditions.
PAGE 19
TS555 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.