C9531CT

The C9531CT is one member of the C9531 family which designed as the PCIX I/O system clock generator. With the help of the Spread Spectrum technique, this device allows the distribution of the undesirable electromagnetic energy (EMI) over a wide range of frequencies therefore reducing the average radiated energy present at any frequency over a given time period.

Features of the C9531CT are:(1)dedicated clock buffer power pins for reduced noise, crosstalk and jitter; (2)buffer XIN Reference clock output; (3)input clock frequency 33.3 MHz; (4)output frequencies of 33.3, 66.6, 100 and 133.3 MHz selectable (PCIX requirements); (5)one output bank of 5 clocks.; (6)SMBus clock control interface for individual clock disabling and SSCG control; (7)output clock duty cycle is 50% (+/-5%); (8)<250 pS skew between output clocks within a bank; (9)output jitter <175 pSec.; (10)spread Spectrum feature for reduced EMI; (11)OE pins for entire output bank enable control and testability; (12)28 Pin SSOP and TSSOP package.

The absolute maximum ratings of the C9531CT can be summarized as:(1)maximum power supply:5.5;(2)storage temperature:-65ºC to + 150ºC;(3)operating temperature:0ºC to +70ºC;(4)maximum ESD protection:2000V;(5)maximum input voltage relative to VDD:VDD+0.3V;(6)maximum input voltage relative to Vss:Vss-0.3V.This device contains circuitry to protect the inputs against damage due to high static voltages or electric field. If you want to know more infor-mation such as the electrical characteristics about the C9531CT, please download the datasheet in www.seekic.com or www.chinaicmart.com.