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Infineon Technologies CY7B991-5JIT — Clock & Timing ICs
Infineon Technologies

CY7B991-5JIT RoboClock PLL Fanout Buffer, 80 MHz, 1:8

MPNCY7B991-5JIT
End of Life

Cypress RoboClock™ CY7B991-5JIT, PLL-based fanout buffer / zero delay buffer, 80 MHz max, 1:8 CMOS fanout, 4.5-5.5V supply, -40 to 85°C, 32-PLCC (J-Lead), surface mount.

$14.42Ref. price · indicative, final on quote
CY7B991-5JIT datasheet
Packaging32-LCC (J-Lead)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

CY7B991-5JIT Technical Specifications
ParameterValue
TypeFanout Buffer (Distribution), Zero Delay Buffer
SeriesRoboClock™
Mounting typeSurface Mount
Voltage4.5V ~ 5.5V
Frequency80MHz
Operating temperature-40°C ~ 85°C (TA)
PLLYes
InputCMOS
OutputCMOS
PackageBulk
Case32-LCC (J-Lead)
Divider (Multiplier)Yes/No
Number of circuits1
Ratio - Input:Output1:8
Differential - Input:OutputNo/No

Product details

What this part does — and what it doesn't

The Cypress CY7B991-5JIT is a PLL-based clock fanout buffer from the RoboClock family. It takes one CMOS input and distributes it to eight CMOS outputs with zero-delay alignment. Supply range is 4.5 V to 5.5 V. Operating temperature span is -40°C to 85°C. No differential I/O.

Package and mounting — the PLCC footprint

Housed in a 32-lead PLCC with J-leads, body dimensions 11.43 x 13.97 mm. Surface-mount.

Lifecycle and compliance

Status is Active per the manufacturer. The part is RoHS non-compliant.

Frequently asked questions

Is CY7B991-5JIT obsolete or still active?

The manufacturer lists the CY7B991-5JIT as Active. No end-of-life notice or last-time-buy window is in effect. It can be specified into new designs without obsolescence risk.

Does CY7B991-5JIT work with 3.3V input?

No. The supply voltage range is 4.5 V to 5.5 V, and the input is CMOS-level referenced to that supply. A 3.3 V logic signal will not reliably drive the input. Use level translation or select a 3.3 V-rated clock buffer.

What is a direct replacement for CY7B991-5JIT?

The Cypress CY2305SXI-1HT is a similar PLL-based fanout buffer but runs on 3.3 V and has a 1:5 fanout ratio, not 1:8. It is not a pin-for-pin replacement — the PLCC footprint and 5 V supply differ. For a functional equivalent at 5 V with 1:8 fanout, the best path is to source the original CY7B991-5JIT or check the RoboClock family for a 5 V variant with the same PLCC pinout.