Features
▪ Qualified to Renesas Rad Tolerant Screening and
QCI Flow (R34TB0004EU)
▪ PVIN supply range 3V to 18V
• Independent clock output supply 3V to 5.5V
▪ Programmable output frequency starting at 25kHz
• Internal or external clock source
▪ Programmable phase delay as low as 15°
increments
▪ I2C/SMBus Compatible
▪ I2C/SMBus or pin strapping to set frequency and
phase
▪ TID Radiation Lot Acceptance Testing
(LDR: ≤10mrad(Si)/s)
• ISL74420M30NZ: 30krad(Si)
• ISL74420M50NZ: 50krad(Si)
▪ SEE Characterization
• No DSEE for PVIN = 20.7V, VCC = 5.5V, and
VCCEXT = 6.5V at 46MeV·cm2/mg
• SEFI <10μm2 at 46MeV·cm2/mg
• No missing pulse SETs and Frequency Deviation
SETs <3.6% on CLKOUTx at 46MeV·cm2/mg