CY28349OC

Product Overview

The CY28349OC from Cypress Semiconductor Corp is a clock synthesizer and driver IC intended for single-ended timing generation. The device includes a PLL and accepts either LVTTL or crystal input, producing a clock output. Its specified input-to-output ratio is 1:20, with divider capability and no multiplier capability. The maximum frequency is 1 MHz, and the circuit count is one. It operates from a 3.135 V to 3.465 V supply and is specified for 0°C to 70°C ambient temperature. The surface-mount package is a 48-BSSOP device, 0.295 in wide with a 7.50 mm body width, also identified as 48-SSOP.

Key Features

• Clock synthesizer and driver IC with an integrated PLL.
• Accepts LVTTL or crystal input and provides a clock output.
• Single-ended input and output configuration, specified as No/No differential.
• One circuit with a 1:20 input-to-output ratio, divider yes and multiplier no.
• Maximum frequency of 1 MHz and supply voltage range of 3.135 V to 3.465 V.
• Surface-mount 48-BSSOP package, 0.295 in (7.50 mm) wide, with 0°C to 70°C (TA) operating temperature.

Applications

• Local clock generation for embedded control boards using a crystal or LVTTL reference.
• Clock distribution to single-ended logic loads on digital timing assemblies.
• Low-speed timing synthesis in measurement, control, or instrumentation equipment.

Design & Procurement Notes

Designers should confirm that the board clocking scheme remains within the 1 MHz maximum and uses the 1:20 ratio with divider-only behavior. The 3.135 V to 3.465 V supply window requires a controlled supply within the stated range, and the 0°C to 70°C (TA) range should be checked against the intended ambient environment. Because the input and output are specified as non-differential, the part is suited to single-ended clock routing rather than differential clock domains. The 48-BSSOP surface-mount package requires a compatible footprint and pad layout. With only one circuit provided, systems needing multiple independent clock domains should account for additional timing resources. For procurement, specify the manufacturer part CY28349OC and verify the package designation as 48-BSSOP or 48-SSOP.