| PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS |
| REFERENCE CLOCK TIMING REQUIREMENTS (REFCLK) |
| | | MAX9206 | 16 40 | |
| REFCLK Frequency | fRFF | MAX9208 | 40 60 | MHz |
| REFCLK Frequency Variation | RFFV | | -200 200 | ppm |
| | | MAX9206 | 25 62 5 | |
| REFCLK Period | tRFCP | MAX9208 | 16 666 25 | ns |
| REFCLK Duty Cycle | RFDC | | 30 50 70 | % |
| REFCLK Input Transition Time | tRFTT | | 3 6 | ns |
| SWITCHING CHARACTERISTICS |
| Recovered Clock (RCLK) Period | | MAX9206 | 25 62 5 | |
| (Note 6) | tRCP | MAX9208 | 16 666 25 | ns |
| Low-to-High Transition Time | tCLH | Figure 3 | 1 5 3 | ns |
| High-to-Low Transition Time | tCHL | Figure 3 | 2 3 | ns |
| | | | MAX9206, 40MHz | 1.75 x tRCP l.75 x tRCP l.75 x tRCP | |
| Deserializer Delay | tDD | Figure 4 | MAX9208, 60MHz | 1.75 x tRCP l.75 x tRCP l.75 x tRCP | ns |
| ROUT_ Data Valid Before RCLK | tROS | Figure 5 | 0.4 x tRCP 0.5 x tRCP | ns |
| ROUT_ Data Valid After RCLK | tROH | Figure 5 | 0.4 x tRCP 0.5 x tRCP | ns |
| RCLK Duty Cycle | tRDC | | 43 50 57 | % |
| OUTPUT High-to-High Impedance Delay | tHZR | CL = 5pF, Figure 6 | 8 | ns |
| OUTPUT Low-to-High Impedance Delay | tLZR | CL = 5pF, Figure 6 | 8 | ns |
| OUTPUT High-Impedance to High-State Delay | tZHR | CL = 5pF, Figure 6 | 6 | ns |
| OUTPUT High-Impedance to Low-State Delay | tZLR | CL = 5pF, Figure 6 | 6 | ns |
| PLL Lock Time (from PWRDN Transition High) | tDSR1 | Sync patterns at input; supply and REFCLK stable; measured from PWRDN transition high to LOCK transition low; Figure 7 | (2048 + 42) x tRFCP | ns |
| | | | | |
Three open-drain N-channel outputs (CPU_ON, IO_ON and CLK_ON) are provided to turn DC/DC converter sup- plies on or off viatheir RUN/SS inputs.A globalcontrol pin, VRON is used to turn the converters on or off simulta- neously. An internal timer pulls the PGOOD pin low for 500cs if the divider setting changes or the converters are turned on via the SMBus and the VRON pin. L7 LTC and LT are registered trademarks of Linear Technology Corporation. AMD Athlon is a trademark of Advanced Micro Devices, Inc. Pentium is a registered trademark of Intel Corporation. Intel SpeedStep is a trademark ot Intel Corporation.
