Touchstone Semiconductor Distributor

TS3005 Semi Oscillator/Timer

Touchstone's TS3005 timer/oscillator is compact, easy-to-use, and versatile

Touchstone Semiconductor's TS3005 Semi Oscillator/TimerTouchstone Semiconductor's TS3005 is a single-supply, second-generation semi oscillator/timer, fully specified to operate over a supply voltage range of 1.55 V to 5.25 V while consuming 1.35 μA supply current. The device requires only a resistor to set the base output frequency (or output period) at 49 Hz (or 20.5 ms) with a 50% duty cycle. Optimized for ultra-long life, low-frequency, battery-powered/portable applications, the TS3005 joins the TS3001, TS3002, TS3003, TS3004, and TS3006 in Touchstone’s CMOS timer family, as part of its “NanoWatt Analog™” series of high-performance analog integrated circuits.

Including an internal 3-bit counter, the TS3005 output period can be user-adjusted from 1.7 ms to 33 hr without additional components. In addition, the TS3005 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 TS3005 offers up to 84% reduction in PCB area and over three orders of magnitude lower-power consumption.

The TS3005 is fully specified over the −40°C to +85°C temperature range and is available in a low-profile, 10-pin 3 mm x 3 mm TDFN package with an exposed back-side paddle.

  • Ultra low supply current: 1.35 μA at 25 kHz
  • Supply voltage operation: 1.55 V to 5.25 V
  • Single resistor sets FOUT at 50% duty cycle
  • FOUT/PWMOUT Output Driver resistance: 160 Ω
  • FOUT Period Accuracy: 3%
  • FOUT Period Drift: 0.02%/ºC
  • Separate PWM control and buffered output

  • Compact micropower replacement for crystal and ceramic oscillators
  • Micropower sequential timing
  • Micropower Clock Generation
  • Portable and battery-powered equipment
  • Low parts count micropower oscillator
  • Micropower pulse-width modulation control
  • Micropower pulse-position modulation control

Digi-Key P/N Manufacturer P/N Description  
TS3005ITD1033TCT-ND TS3005ITD1033T IC OSC SILICON 10TDFN Datasheet
TS3005DB-ND TS3005DB BOARD EVAL FOR TS3005 Datasheet