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參數(shù)資料
| 型號(hào)： | T7289A |
| 廠商： | Lineage Power |
| 英文描述： | DS1 Line Interface(DS1 線接口) |
| 中文描述： | DS1的線路接口（DS1的線接口） |
| 文件頁數(shù)： | 12/18頁 |
| 文件大小： | 285K |
| 代理商： | T7289A |
Data Sheet
January 1998
T7289A DS1 Line Interface
12
Lucent Technologies Inc.
Electrical Characteristics
(continued)
Operating Conditions
(continued)
Table 6. Logic Interface Electrical Characteristics
Internal pull-up devices are provided on the following input leads:
LP1
,
LP2
,
LP3
, and
ALMT
. Internal pull-down
devices are provided on the following leads: SD, RBC, BZSC/TNDATA, TBC, DUAL, EC1, EC2, and EC3. The inter-
nal pull-up or pull-down devices require the input to source or sink no more than 20
μ
A. Output pull-up is provided
on leads
LOS
and
LOC
.
Table 7. Transmitter Specifications
* Below the power at 772 kHz.
Total power difference.
Parameter
Symbol
Condition
Min
Max
Unit
Input Voltage:
Low
High
Output Voltage (except
LOS
and
LOC
):
Low
High
High, CMOS
Output Voltage (
LOS
,
LOC)
:
Low
High
Input Capacitance
Load Capacitance
V
IL
V
IH
—
—
GND
D
2.0
0.8
V
DDD
V
V
V
OL
V
OH
V
OHC
I
OL
= 4.9 mA
I
OH
= –4.9 mA
I
OHC
= –0.49 mA
—
2.4
3.5
0.4
—
V
DDD
V
V
V
V
OL
V
OH
C
I
C
L
I
OL
= 4.9 mA
I
OHC
= –10
μ
A
—
—
—
3.5
20
40
0.4
V
DDD
—
—
V
V
pF
pF
Parameter
Min
2.4
333
Typ
3.0
350
Max
3.6
362
Unit
V
ns
Output Pulse Amplitude (at the DSX)
Pulse Width (50%)
Output Power Levels:
2 kHz Band at 772 kHz
2 kHz Band at 1544 kHz
Positive/Negative Pulse Imbalance
Rise/Fall Time (20%—80%)
Output Termination
Output Transformer Turns Ratio
PSRR:
dc < Frequency < 200 kHz
200 kHz < Frequency < 500 kHz
500 kHz < Frequency < 5 MHz
12.6
–29
—
—
95
1:1.12
16.5
–39
—
—
100
1:1.14
17.9
—
0.5
50
105
1:1.16
dBm
dB*
dB
ns
—
35
25
8
—
—
—
—
—
—
dB
dB
dB
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