CDCE421 Datasheet, PDF (14/30 Pages) Texas Instruments – Fully Integrated Wide-Range, Low-Jitter, Crystal-Oscillator Clock Generator

CDCE421
SCAS842 – APRIL 2007
ELECTRICAL CHARACTERISTICS (continued)
recommended operating conditions for CDCE421 device
PARAMETER
LVPECL OUTPUT MODE (see Figure 11)
f_CLK
V_OH
V_OL
|V_OD|
t_r
t_f
Output frequency
LVPECL high-level output voltage
LVPECL low-level output voltage
LVPECL differential output voltage
Output rise time
Output fall time
Duty cycle of the output waveform
Duty cycle exception
LVCMOS INPUT
V_IL,CMOS
V_IH,CMOS
I_L,CMOS
I_H,CMOS
Low-level CMOS input voltage
High-level CMOS input voltage
Low- level CMOS input current
High-level CMOS input current
TEST CONDITIONS
20% to 80% of V_OUTpp
80% to 20% of V_OUTpp
630 MHz to 650 MHz
V_CC = 3.3 V
V_CC = 3.3 V
V_CC = V_CC max, V_IL = 0 V
V_CC = V_CC min, V_IH = 3.7 V
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MIN TYP
MAX UNIT
10.9
V_CC – 1.2
V_CC – 2.17
407
45%
43%
1175
V_CC – 0.81
V_CC – 1.36
1076
170
170
55%
57%
MHz
V
V
mV
ps
ps
0.7 V_CC
0.3 V_CC
V
V
–200 µA
200 µA
14
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