pi6c3991-2 Pericom Semiconductor Corporation, pi6c3991-2 Datasheet - Page 6

• Manufacturer Part Number: pi6c3991-2
• Description: 3.3v, Programmable Skew Pll Clock Driver With 250ps Accuracy, Lvttl, 3.75 To 80 Mhz
• Manufacturer: Pericom Semiconductor Corporation

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
AC Timing Diagrams
AC Test Loads and Waveforms
R1=100
R2=100
C
(Includes fixture and probe capacitance)
L
=30pF
REF Divided by 2
REF Divided by 4
Inverted Q
C
L
Other Q
TTL AC Test Load
REF
FB
Q
t
PD
V
CC
R1
R2
t
SKEW1,3,4
t
t
REF
t
t
SKEW0, 1
SKEWPR
SKEW3,4
t
RPWH
t
ODCV
t
6
SKEW3,4
t
SKEW2
t
RPWL
t
ODCV
Vth=1.5V
t
t
SKEW0, 1
SKEWPR
3.3V High-Speed, Low-Voltage Programmable
3.0V
2.0V
0.8V
0V
TTL Input Test Waveform
Skew Clock Buffer - SuperClock
1ns
t
SKEW2
t
t
SKEW3,4
SKEW2,4
1ns
t
JR
PS8450C
PI6C3991
08/15/02