Clock generator with a 250 kHz ceiling — no PLL, no multiplication
The DS1090U-32+T is a single-channel clock generator from Analog Devices' EconOscillator™ series, producing a CMOS or TTL output from an input clock. With a maximum output frequency of 250 kHz, it is designed for low-speed timing tasks — think supervisory watchdog clocks, slow ADC sample rates, or control-logic sequencing — not high-frequency synthesis. The part has no PLL (PLL: No) and no frequency multiplication (Divider/Multiplier: Yes/No), so it can divide the input clock down but cannot multiply it up. This limits the part to generating sub-harmonics of the input, not synthesizing new frequencies. The 1:1 input-to-output ratio confirms it is a single-output buffer or divider, not a fanout device.
This makes the DS1090U-32+T a drop-in fit for mixed-voltage boards where the clock generator must share a rail with the microcontroller or FPGA bank. This qualifies the part for factory-floor automation, outdoor telecom cabinets, and HVAC controllers — environments where the ambient temperature cycles beyond commercial 0°C to 70°C limits.
Package and board-fit — 8-uMAX/uSOP, surface-mount
Housed in an 8-TSSOP or 8-MSOP package (0.118-inch, 3.00mm width), the DS1090U-32+T occupies a small footprint on the PCB. The supplier device package is 8-uMAX/uSOP, a Maxim/Analog Devices standard for low-pin-count analog and timing ICs. Surface-mount assembly with standard reflow profiles applies.