Description:The 85322I is a Dual LVCMOS / LVTTL-to- Differential 2.5V / 3.3V LVPECL translator. The 85322I has selectable single ended clock inputs. The single ended clock input accepts LVCMOS or LVTTL input levels and translate them to 2.5V / 3.3V LVPECL levels. The small outline 8-pin SOIC package makes this device ideal for applications where space, high performance and low power are important.
Renesas provides a recommended PCB layout guide in their application note (R01AN2732EU0100) which includes thermal design considerations, such as thermal vias, copper pours, and component placement.
Renesas recommends a specific power sequencing scheme in their application note (R01AN2732EU0100) to ensure proper device operation. This includes powering up the VCC and VDD pins in a specific order and within a certain time frame.
Renesas recommends using high-frequency, low-ESR capacitors (e.g., 100nF, 1uF, and 10uF) with a voltage rating of at least 2.5V, placed as close as possible to the device's power pins.
Renesas provides a JTAG interface specification in their datasheet, which includes information on signal levels, clock frequency, and protocol. Engineers can use this information to develop custom test fixtures or use third-party JTAG test equipment.
The thermal resistance values for the 85322AMILFT package are not explicitly stated in the datasheet. However, Renesas provides a thermal model in their application note (R01AN2732EU0100) which includes thermal resistance values for the package, junction-to-case, and junction-to-ambient.
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85322AMILFT Overview
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