• Fixed 16.384/32.768 kHz
  • Small package: 2.0 x 1.2 mm, 2.9 x 2.8 mm
  • Ultra-low power: +1.0 μA (typ.)
  • Internal filtering eliminates external Vdd bypass cap
  • <±20 x 10-6 frequency tolerance
  • <100 x 10-6 Stability over -40°C to +85°C


  • Tablets
  • e-Readers
  • Sport Video Camcorders
  • Industrial and Automotive

Standard Specification

Output FrequencyFout16.384/32.768kHz 
Operating Supply VoltageVdd+1.5-+3.63VTA = over temperature
Operating Temperature RangeT_use-10~+70 / -40~+85 / -40~+105 
Frequency stability Over
F_stab--+75×10-6TA = -10°C to +70°C, Vdd: +1.5V – +3.63V
--+100TA = -40°C to +85°C, Vdd: +1.5V – +3.63V
--+150TA = -40°C to +105°C, Vdd: +1.5V – +3.63V
Initial Tolerance [2]F_init-20-+20×10-6TA = +25°C, post reflow, Vdd: +1.5V – +3.63V.
First yerar Frequency Aging -1.0-+1.0×10-6TA = +25°C
Operating CurrentIdd-+1.0-μATA = +25°C, Vdd: +1.5V – +3.3V. No load
--+1.30TA = -10°C to +70°C, Vdd max: +3.63V. No load
--+1.40TA = -40°C to +85°C, Vdd max: +3.63V. No load
--+2.80TA = -40°C to +105°C, Vdd max: +3.63V. No load
Start-up Time at Power-upT_start-180300ms‘-40°C ≤ TA ≤ +50°C, valid output
--450‘-40°C ≤ TA ≤ +85°C, valid output

500 +


TA = -55°C and +105°C
Output Clock Duty CycleDC48-52% 
Output Voltage LowVOL--Vdd x 0.1VVdd: +1.5V – +3.63V. IOL = +10 μA, 15 pF
Output Voltage HighVOHVdd x 0.9--VVdd: +1.5V – +3.63V, IOH = -10 μA, 15 pF
Output Rise/Fall Timetr,tf-100200ns10-90% (Vdd), 15 pF load, Vdd = +1.5V to +3.63V
Packing Unit1000pcs./reel(φ180)or 3000pcs./reel(φ180)

[1]. Measured peak-to-peak. Inclusive of Initial Tolerance at +25°C, and variations over operating temperature, rated power supply voltage and load.
Stability is specified for two operating voltage ranges. Stability progressively degrades with supply voltage below +1.5V.
[2]. Measured peak-to-peak. Tested with Keysight 53132A frequency counter.
Due to the low operating frequency, the gate time must be ≥100 ms to ensure an accurate frequency measurement.

Consult our sales representative for other specifications.

Dimentions, etc. (Click for full size)