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參數(shù)資料
| 型號(hào)： | HC4P5504B1- |
| 廠商： | Intersil Corporation |
| 英文描述： | ITU Low Cost, PABX SLIC With 40mA Loop Feed |
| 中文描述： | 國(guó)際電聯(lián)低成本，分機(jī)與四十○毫安循環(huán)飼料用戶(hù)接口 |
| 文件頁(yè)數(shù)： | 6/10頁(yè) |
| 文件大?。?/td> | 235K |
| 代理商： | HC4P5504B1- |
6
Functional Diagram
26
C
4
Capacitor #4 - An external capacitor to be connected between this terminal and analog ground. This capacitor prevents
false ground key indication and false ring trip detection from occurring when longitudinal currents are induced onto the
subscriber loop from near by power lines and other noise sources. This capacitor is also required for the proper operation
of ring trip detection. Typical value is 0.5
μ
F, to 1.0
μ
F, 20V. This capacitor should be nonpolarized.
27
AG
Analog Ground - To be connected to zero potential and serves as a reference for the transmit output (TX) and receive
input (RX) terminals.
28
TX
Transmit Output, Four Wire Side - A low impedance analog output which represents the differential voltage across Tip
and Ring. Transhybrid balancing must be performed (using the SLIC microcircuit’s spare op amp) beyond this output to
completely implement two to four wire conversion. This output is unbalanced and referenced to analog ground. Since the
DC level of this output varies with loop current, capacitive coupling to the next stage is essential.
1, 8,
15, 22
NC
No internal connection.
NOTE: All grounds (AG, BG, and DG) must be applied before V
B
+ or V
B
-. Failure to do so may result in premature failure of the part. If a user wishes
to run separate grounds off a line card, the AG must be applied first.
Pin Descriptions
(Continued)
28 PIN
PLCC
SYMBOL
DESCRIPTION
+
DIFF
AMP
+
OP
AMP
LOOP
MONITORING
RING
CONTROL
2-WIRE
LOOP
SECONDARY
PROTECTION
LINE
DRIVERS
TIP
RING
V
B
-
V
B
-
PD
POWER DENIAL
150
RING
150
RF
BG
150
TF
TIP
RD
RC
RS
RING SYNC
RING COMMAND
RING
TRIP
SHD
GKD
TX
TRANSMIT
OUTPUT
OUT
+IN
-IN
RX
RECEIVE
INPUT
SLIC MICROCIRCUIT
1/2 RING
RELAY
V
B
-
RING
VOLTAGE
RFS
1/2 RING
RELAY
150
SWITCH HOOK
DETECTION
GROUND KEY
DETECTION
-1
+1
BATTERY
FEED
LOOP
CURRENT
LIMITER
HC-5504B1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HC4P5504B1-5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: 制造商:Intersil Corporation 功能描述: |
| HC4P5504B-5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
| HC4P5504B-5X96 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Subscriber Line Interface Circuit |
| HC4P5504B-7 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Subscriber Line Interface Circuit |
| HC4P5504B-9 | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:EIA/ITU PABX SLIC with 40mA Loop Feed |
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