Touchstone announced the expansion of its micropower family of timer IC

Touchstone TS3004

Touchstone Semiconductor announced that it has expanded its micropower family of timer IC. The TS3004 is a single-supply device fully specified to operate over a supply voltage range of 1.55V to 5.25V while consuming 1.9μA supply current. Requiring only a resistor to set the base output frequency (or output period) at 25kHz (or 40µs) with a 50% duty cycle, the TS3004 timer/oscillator is compact, easy-to-use, and versatile. Optimized for ultra-long life, low frequency, battery-powered/portable applications, the TS3004 joins the TS3001, TS3002, TS3003, TS3005, and TS3006 in Touchstone’s CMOS timer family.

Touchstone Semiconductor - TS3004

The TS3004 output period can be user-adjusted from 0.005Hz-100kHz without additional components. In addition, the TS3004 represents a 25% reduction in pcb area and a factor-of-10 lower power consumption over other CMOS-based integrated circuit oscillators/timers. When compared against industry-standard 555-timer-based products, the TS3004 offers up to 84% reduction in pcb area and over three orders of magnitude lower power consumption.

TS3004 Typical Application Circuit
Typical Application Circuit


  • Portable and Battery-Powered Equipment
  • Low Parts Count Micropower Oscillator
  • Compact Micropower Replacement for Crystal and Ceramic Oscillators
  • Micropower Pulse-width Modulation Control
  • Micropower Pulse-position Modulation Control
  • Micropower Clock Generation
  • Micropower Sequential Timing


  • Ultra Low Supply Current: 1.9µA at 25kHz
  • Supply Voltage Operation: 1.55V to 5.25V
  • Single Resistor Sets FOUT at 50% Duty Cycle
  • 3-pin User-Programmable FOUT Period:
    • 0.005Hz ≤ tFOUT ≤ 100kHz
  • FOUT Period Accuracy: 3%
  • FOUT Period Drift: 0.02%/°C
  • FOUT/PWMOUT Output Driver Resistance: 160Ω

The TS3004 is fully specified over the –40°C to +85°C temperature range and is available in a low-profile, 10-pin 3×3mm TDFN package with an exposed back-side paddle. They are priced at $0.95 USD for 1,000 unit quantities.

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