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XRK7988 View Datasheet(PDF) - Exar Corporation

Part Name
Description
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XRK7988 Datasheet PDF : 10 Pages
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XRK7988
PRELIMINARY
INTELLIGENT DYNAMIC CLOCK SWITCH PLL CLOCK DRIVER
xr
REV. P1.0.1
DC CHARACTERISTICS (VCC= 3.3 + 5%, TA= -40°C TO +85°C)
SYMBOL
CHARACTERISTICS
MIN
TYP
MAX UNIT
CONDITION
LVCMOS control inputs (MR, PLL_En, Sel_CLK, Man_Override, Alarm_Reset)
VIH Input voltage high
2.0
VCC+0.3 V
VIL Input voltage low
0.8
V
IIN Input currenta
100
-150
µΑ VIN =VCC or VIN =GND
LVCMOS Control Outputs
VOH Output High Voltage
2.0
V IOH=-10mA
VOL Output Low Voltage
0.55
V IOL=10mA
LVPECL clock inputs (CLK, CLK)b
IIN Input current
+100 µΑ VIN =VCC or VIN =GND
LVPECL clock outputs (Qa[1:0], Qa[1:0], Qb[2:0], Qb[2:0])
VOH Output high voltage
VCC-1.2
VCC-0.7 V Termination 50to VTT
VOL Output low voltage
VCC-1.9
VCC-1.45 V Termination 50to VTT
Supply Current
IGND Maximum ground supply current - gnd pins
180 mA GND pins
ICCPLL Maximum PLL power supply - VCC_PLL pin
15
mA VCCPLL pin
a. Inputs have internal pullup/pulldown resistors which affect the input current.
b. Clock inputs driven by LVPECL compatible signals.
5
 

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