What this spread spectrum PLL does for your clock tree
The IMIFS781BTT is a single-circuit PLL-based spread spectrum clock generator from Infineon, designed to reduce peak radiated EMI by modulating the output clock frequency around a center frequency. It accepts CMOS or TTL inputs and delivers CMOS/TTL outputs up to 82 MHz. The 1:1 input-to-output ratio means it's a clean clock conditioner — no fan-out, no division or multiplication — just spread-spectrum modulation on a single clock lane.
Supply flexibility and temperature grade — fit check
Dual supply range covers both 3.3V (2.97V–3.63V) and 5V (4.5V–5.5V) rails, so it drops into existing 3.3V or 5V clock trees without a level translator.
Lifecycle and sourcing posture
RoHS non-compliant — verify your assembly house's exemption allowance if you are under full RoHS compliance; this may drive a waiver or a lead-free alternative search. No stock-holding claim; quoted to order against your BOM quantity.
Package and footprint — 8-TSSOP
8-TSSOP (4.40 mm width, 0.173" body) surface-mount package — the 0.65 mm pitch is routable on a two-layer board, but a solid ground plane under the PLL core is recommended for jitter performance.