參數(shù)資料
型號： L7597
廠商： Lineage Power
英文描述： Resistive Subscriber Line Interface Circuit (SLIC), Ring Relay, and Protector (SRP) for Short Loop and TA-909 Applications(用于短環(huán)路和TA-909的電阻性用戶線接口、振鈴繼電器和保護器)
中文描述： 電阻用戶線接口電路（SLIC），環(huán)繼電器和保護（SRP）的短環(huán)路和TA - 909應(yīng)用（用于短環(huán)路和電訊- 909的電阻性用戶線接口，振鈴繼電器和保護器）
文件頁數(shù)： 10/34頁
文件大?。?/td> 564K
代理商： L7597
10
Lucent Technologies Inc.
Advance Data Sheet
March 1997
Relay, and Protector (SRP) for Short Loop and TA-909 Applications
L7597 Resistive Subscriber Line Interface Circuit (SLIC), Ring
Electrical Characteristics
(continued)
Fault Protection
Pins PT, PR, and V
BF
Pins PT, PR, and V
BF
are protected by SCRs which clamp surge currents (both positive and negative) to FGND. If
the SCR on PR or V
BF
triggers due to a negative surge, the L7597 automatically switches to the disconnect state
while the SCR is conducting current above its hold current. After the SCR releases, the L7597 automatically
switches back to the operating state prior to the SCR trigger.
Table 5. Electrical Characteristics of Pins PT, PR, and V
BF
1. This parameter is not tested in production. It is guaranteed by design and device characterization.
2. Applied voltage is 50 Vpp square wave at 100 Hz to measure dV/dt sensitivity.
Parameter
Min
Typ
Max
Unit
PT and PR:
Surge Current
1
:
Lightning—10
μ
s x 1000
μ
s
Lightning—2
μ
s x 10
μ
s
Power Cross—60 Hz, 1 s
Power Cross—60 Hz, 15 min.
SCR Trigger Voltage Pin PT:
Positive
Negative
dc Transient Response
SCR Trigger Voltage Pin PR:
Positive
Negative
SCR Hold Current (positive and negative)
V
BF
:
Surge Current
1
:
Lightning—10
μ
s x 1000
μ
s
Lightning—2
μ
s x 10
μ
s
Power Cross—60 Hz, 1 s
Power Cross—60 Hz, 15 min.
SCR Trigger Voltage:
Positive
Negative
SCR Hold Current (positive and negative)
Trigger Current (if from a power supply—PT, PR, and V
BF
)
dV/dt Sensitivity
1, 2
(PT, PR, and V
BF
)
—
—
—
—
V
CCA
– 2
–25
–25
150
–220
10
—
—
—
—
—
—
—
—
—
—
±
1
±
2.5
200
50
V
CCA
+ 4
–35
–55
280
–320
—
A
A
mArms
mArms
V
V
V
V
V
mA
—
—
—
—
150
–220
10
—
—
—
—
—
—
—
—
—
—
500
±
5.5
±
13
800
150
280
–320
—
±
250
—
A
A
mArms
mArms
V
V
mA
μ
A
V/
μ
s
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