Low power single CMOS timer

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),

and high frequency:

(ff(max.) TS555 = 2.7 MHz versus f(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 (1012Ω), timing capacitors can also be minimized.

Key Features

  • Very low power consumption:
    • 110 μA typ at VCC = 5 V
    • 90 μa typ at VCC = 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: 1012 Ω
  • Output compatible with TTL, CMOS and logic MOS

Circuit Diagram

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Product Specifications
Description Version Size
DS0836 DS0836: Low-power single CMOS timer 4.0 423 KB

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Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
TS555IDT SO-8 Tape And Reel -40 125 NRND - 1000 NEC EAR99 - MORE INFO No availability reported, please contact our Sales office
TS555CDT SO-8 Tape And Reel -40 125 NRND - 1000 NEC EAR99 - MORE INFO No availability reported, please contact our Sales office
TS555IDTTR SO-8 Tape And Reel -40 125 Active 0.408 1000 NEC EAR99 MOROCCO MORE INFO No availability reported, please contact our Sales office
TS555IPT TSSOP8 Tape And Reel -40 125 NRND - 1000 NEC EAR99 - MORE INFO No availability reported, please contact our Sales office
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TS555IDT NRNDSO-8IndustrialEcopack2 0 0
TS555CDT NRNDSO-8IndustrialEcopack2 0 0
TS555IDTTR ActiveSO-8IndustrialEcopack2 (**) 0 0
TS555IPT NRNDTSSOP8IndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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