參數(shù)資料
型號: L8560
英文描述: Low-Power SLIC with Ringing
中文描述: 低功耗振鈴用戶接口
文件頁數(shù): 16/46頁
文件大?。?/td> 842K
代理商: L8560
Data Sheet
April 2000
L8560 Low-Power SLIC with Ringing
16
Lucent Technologies Inc.
Electrical Characteristics
(continued)
Table 10. Logic Inputs and Outputs
Parameter
Symbol
Min
Typ
Max
Unit
Input Voltages:
Low Level (permissible range)
High Level (permissible range)
Input Currents:
Low Level (V
CC
= 5.25 V, V
I
= 0.4 V)
High Level (V
CC
= 5.25 V, V
I
= 2.4 V)
Output Voltages (open collector with internal pull-up resistor):
Low Level (V
CC
= 4.75 V, I
OL
= 360
μ
A)
High Level (V
CC
= 4.75 V, I
OH
= –20
μ
A)
V
IL
V
IH
–0.5
2.0
0.4
2.4
0.7
V
CC
V
V
I
IL
I
IH
–75
–40
–115
–60
–300
–100
μ
A
μ
A
V
OL
V
OH
0
2.4
0.2
0.4
V
CC
V
V
Ring Trip Requirements
I
Ringing signal:
— Voltage, minimum 35 Vrms, maximum 100 Vrms.
— Frequency, 17 Hz to 23 Hz.
— Crest factor, 1.4 to 2.
I
Ringing trip:
100 ms (typical),
250 ms (V
BAT
= –33 V, loop
length = 530
).
I
Pretrip:
— The circuits in Figure 4 will not cause ringing trip.
12-2572.e (F)
Figure 4. Ring Trip Circuits
RING
RING
RING
100
10 k
6
μ
F PER TA 909
8
μ
F PER TR 57
TIP
TIP
TIP
2
μ
F
200
SWITCH CLOSES < 12 ms
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