lmx2505lq1321 National Semiconductor Corporation, lmx2505lq1321 Datasheet - Page 6

• Manufacturer Part Number: lmx2505lq1321
• Description: Pllatinu Dual Frequency Synthesizer System With Integrated Vcos
• Manufacturer: National Semiconductor Corporation

www.national.com
Symbol
DIGITAL INTERFACE (DATA, CLK, LE, LD, CE, BS)
V
V
I
I
V
V
MICROWIRE INTERFACE TIMING
t
t
t
t
t
t
IH
IL
CS
CH
CWH
CWL
ES
EW
IH
IL
OH
OL
Electrical Characteristics
T
noted.) (Continued)
Note 5: RF PLL and VCO in PDC800 mode.
Note 6: RF PLL and VCO in PDC1500 mode.
Note 7: The reference frequency must also be programmed using the OSC_FREQ control bit. For other reference frequencies, please contact National
Semiconductor.
Note 8: For other frequency ranges, please contact National Semiconductor.
Note 9: Lock time is defined as the time difference between the beginning of the frequency transition and the point at which the frequency remains within +/-1 kHz
of the final frequency.
Note 10: Lock time is defined as the time difference between the beginning of the frequency transition and the point at which the frequency remains within +/-3 kHz
of the final frequency.
Note 11: All limits are guaranteed. All electrical characteristics having room temperature limits are tested during production with T
Statistical Quality Control (SQC) methods. All hot and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations
and applying statistical process control.
Microwire Interface Timing Diagram
A
= 25 ˚C; Limits in boldface type apply over the operating temperature range from -20 ˚C ≤ T
Parameter
High-Level Input Voltage
Low-Level Input Voltage
High-Level Input Current
Low-Level Input Current
Input Capacitance
Rise/Fall Time
High-Level Output Voltage
Low-Level Output Voltage
Output Capacitance
Data to Clock Set Up Time
Data to Clock Hold Time
Clock Pulse Width HIGH
Clock Pulse Width LOW
Clock to Latch Enable Set Up Time
Latch Enable Pulse Width
(V
IN
= 2.8 V, refer to Typical Application Circuit; Limits in standard typeface are for
Condition
6
V
V
0.8 V
0.8 V
CC
DD
Min
-0.3
-0.3
-10
-10
50
10
50
50
50
50
- 0.4
- 0.4
CC
DD
A
≤ 75 ˚C unless otherwise
Typ
30
3
A
= 25 ˚C or correlated using
0.2 V
0.2 V
Max
V
V
20067101
0.4
10
10
5
CC
DD
CC
DD
Units
µA
µA
pF
pF
ns
ns
ns
ns
ns
ns
ns
V
V
V
V
V
V
V