2
INDUSTRIAL TEMPERATURE RANGE
QS5LV931
3.3V LOW SKEW CMOS PLL CLOCK DRIVER WITH INTEGRATED LOOP FILTER
PIN CONFIGURATION
NOTE:
1. Stresses beyond those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute-
maximum-rated conditions for extended periods may affect device reliability.
ABSOLUTE MAX IMUM RATINGS
(1)
Symbol
Description
AV
DD
/V
DD
Supply Voltage to Ground
DC Input Voltage V
IN
MaximumPower Dissipation (T
A
= 85°C)
T
STG
Storage Temperature Range
Max
Unit
V
V
W
°C
–0.5 to +7
–0.5 to +5.5
0.5
–65 to +150
QSOP
TOP VIEW
CAPACITANCE
(T
A
= +25°C, f = 1MHz, V
IN
= 0V)
Pins
Typ.
C
IN
3
C
OUT
4
Max.
4
5
Unit
pF
pF
PIN DESCRIPTION
Pin Name
SYNC
FREQ_SEL
I/O
I
I
Description
Reference clock input
VCO frequency select. For choosing optimal VCO operating frequency depending on input frequency. HIGH is for higher frequencies,
LOW is for lower frequencies.
PLL feedback input which is connected to either a Q or a Q/2 output. External feedback provides flexibility for different output frequency
relationships. See the Frequency Selection Table for more information.
Clock outputs
Clock output. Matched in phase, but frequency is half the Q frequency.
Output enable/asynchronous reset. Resets all output registers. When 0, all outputs are held in a tri-stated condition. When 1, outputs are
enabled.
PLL enable. Enables and disables the PLL. Allows the SYNC input to be single-stepped for systemdebug.
Power supply for output buffers
Power supply for phase lock loop and other internal circuitries
Ground supply for output buffers
Ground supply for phase lock loop and other internal circuitries
FEEDBACK
I
Q
0
-Q
4
Q/2
OE/
RST
O
O
I
PLL_EN
V
DD
AV
DD
GND
AGND
I
—
—
—
—
OUTPUT FREQUENCY SPECIFICATIONS
Industrial: T
A
= –40°C to +85°C, AV
DD
/V
DD
= 3.3V ± 0.3V
Symbol
F
MAX_Q
F
MAX_Q/2
F
MIN_Q
F
MIN_Q/2
Description
Max Frequency, Q
0
- Q
4
,
Max Frequency, Q/2
Mn Frequency, Q
0
- Q
4
Mn Frequency, Q/2
– 50
50
25
10
5
– 66
66
33
10
5
– 80
80
40
10
5
Units
MHz
MHz
MHz
MHz
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
GND
OE/RST
FEEDBACK
AV
DD
V
DD
AGND
SYNC
FREQ_SEL
GND
Q
1
Q
4
Q/2
GND
Q
3
Q
2
GND
PLL_EN
GND
Q
1
V
DD