XRT8001(1999) View Datasheet(PDF) - Exar Corporation
Part Name
Description
Manufacturer
XRT8001 Datasheet PDF : 36 Pages
| |||
Preliminary
XRT8001
DC ELECTRICAL CHARACTERISTICS (Except Microprocessor Serial Interface)
Symbol
VIL
V
IH
VOL
VOH
VOL
VOH
I
IL
IIH
IIL
IIH
I
CC
Parameter
Input Low Level
Input High Level
Output Low Level (CLK1, CLK2)
Output High Level (CLK1, CLK2)
Output Low Level (LOCKDET,
SYNC)
Output High Level (LOCKDET,
SYNC)
Input Low Current (CSB, MSB)
Input High Current (CSB, MSB)
Input Low Current (except CSB,
MSB)
Input High Current (except CSB,
MSB)
Operating Current
Min.
2.0
2.4
Typ.
2.4
-10
TBD
RIN
Internal Pull-up Resistance (CSB, 50
100
MSB)
AC ELECTRICAL CHARACTERISTICS (See Figure 2A.)
Max.
0.8
0.4
0.4
-150
10
10
150
Units
V
V
V
V
V
V
µA
µA
µA
µA
kΩ
Condition
IOL = -6.0mA
IOL = 6.0mA
IOL = -3.0mA
IOL = 3.0mA
VIN = VCC
VIN = VCC
No Load, CLk1, CLK2 = 8 x
2.048MHz
Symbol
t1
t2
t3
t61
t74
t74
Parameter
Input Frequency
Minimum Input Signal “High” to
“Low” Duration
Output Frequency
Duty Cycle
Jitter Added 8kHz – 40kHz
Jitter Added 10Hz – 40kHz
t74
Broadband Jitter
t74
Jitter Added 20Hz – 100kHz
t74
Jitter Added 18kHz – 100kHz
t8
Capture Time
t9
Clock Output Rise Time
t10
Clock Output Fall Time
t112
SYNC Output Signal Duty Cycle
t12
SYNC Ouput Signal + ½ Cycle
t13
SYNC Output Signal – ½ Cycle
t14
Delay Time between the rising
edge of of SYNC and the Rising
edge of CLK1 and CLK2
Min.
TBD
12
56
47.5
TBD
TBD
40
t-20
Typ.
Max.
TBD
Units
MHz
ns
Conditions
16.384 kHz
50
52.5
% VCC/2 switch point, 30pF Load
TBD TBD
UI Output =1.544MHz (0.025 UI)3
TBD
TBD
TBD
TBD
TBD
TBD
UI Output = 1.544MHz (0.025
UI)3
UI Output = 1.544MHz (0.05 UI)3
UI Output = 2.048MHz (1.5 UI)3
TBD TBD
UI Output = 2.048MHz (0.2 UI)3
TBD
UI
10ns
10ns
60
ns 30pF load measured at
20/80%
ns 30pF load measured at
20/80%
% VCC/2 switch point
t+20
ns See Table 8 for values of “t”
Notes:
1 t6 = t4
(t4 + t5)
2
t11
=
t12
(t12 + t13)
3 Specifications from AT&T Publication 62411 and ITU-T Recommendations G-823 (for
1.544MHz and (2.048MHz, respectively).
4 t7 is guaranteed by characterization, not tested.
Rev. P1.00
5
Share Link: 