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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(hù)器) |
| 中文描述： | 電阻用戶線接口電路（SLIC），環(huán)繼電器和保護(hù)（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(hù)器） |
| 文件頁數(shù)： | 11/34頁 |
| 文件大?。?/td> | 564K |
| 代理商： | L7597 |
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Lucent Technologies Inc.
11
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
(continued)
Loss of Power Supplies
The L7597 must protect itself from lightning and power cross voltages on Tip and Ring if any (or any combination)
of the power supplies (V
CCA
, V
DD
, V
BATH
, and V
BATL
) are disconnected (open circuit) from their dc source. Addition-
ally, if any power supply is disconnected, no overvoltage on Tip or Ring can cause a supply voltage to exceed its
maximum rating. Under these conditions, V
CCA
and V
DD
are considered as one supply (V
CCA
shorted to V
DD
), the
pins of supplies which have more than one pin are shorted together, and bypass capacitors are connected. To sat-
isfy these requirements (and also to disconnect ringing from the loop when ring trip cannot be detected), the L7597
is placed into the disconnect state depending on the voltage at the power supply pins as shown below.
Table 6. Loss of Power Supplies
Analog Signal Pins
Table 7. Analog Signal Pins
1. A battery or ground short on PT, PR, or XMT shall not cause a device failure.
2. This parameter is not tested in production. It is guaranteed by design and device characterization.
Parameter
Min
1
—
–10
—
–65
Typ
—
—
—
—
—
Max
—
4.5
–75
–20
—
Unit
V
V
V
V
V
V
CCA
& V
DD
:
Normal Operating State (as defined by control logic)
Disconnect State
V
BATH
:
Normal Operating State (as defined by control logic)
Disconnect State
Disconnect State
Parameter
Min
Typ
Max
Unit
PT and PR:
Surge Current (See the Protection section.)
Output Drive (PT):
Positive (sink) Drive Current
Negative Voltage Swing (I
OUT
= +15 mA)
Negative (source) Drive Current
Positive Voltage Swing (I
OUT
= –0.1 mA)
Positive Voltage Swing (I
OUT
= –10 mA)
Output Drive (PR):
Positive (sink) Drive Current
Negative Voltage Swing (I
OUT
= +0.1 mA)
Negative Voltage Swing (I
OUT
= +10 mA)
Negative (source) Drive Current
Positive Voltage Swing (I
OUT
= –20 mA)
Output Short-circuit Transient Current
1
Output Impedance (60 Hz—3.4 kHz)
2
Output Load Resistance (dc or ac)
Output Load Capacitance
2
+15
–25
–10
V
CCA
– 2
V
CCA
– 3.5
—
—
—
—
—
—
V
BATH
—
V
CCA
V
CCA
mA
V
mA
V
V
+10
V
BATH
+ 2
V
BATH
+ 4.5
–20
–5
—
250
100
—
—
—
—
—
—
—
—
—
—
—
V
BATH
V
BATH
—
V
CCA
±
125
—
—
1
mA
V
V
mA
V
mA
k
nF
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