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參數(shù)資料
| 型號(hào)： | HC5520 |
| 廠商： | Harris Corporation |
| 英文描述： | resistor |
| 中文描述： | 二氧化碳/極性反轉(zhuǎn)交換機(jī)用戶線接口電路 |
| 文件頁(yè)數(shù)： | 16/20頁(yè) |
| 文件大?。?/td> | 191K |
| 代理商： | HC5520 |
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16
Pin Descriptions
MQFP
PLCC
SYMBOL
DESCRIPTION
1
7
R
X
4W receive input pin, a ground referenced current sense input.
2
8
AGND
Analog ground pin. This pin must be tied to the BGND and RGND pins.
3
9
T
X
4W transmit output pin, a ground referenced voltage source.
4
10
T
X4W
K
ZO
Transmit gain setting pin - connecting a resistor between T
X4W
and T
X
establishes the 2W to 4W gain.
2W impedance setting pin, connecting a network K(Z
L
) between K
ZO
pin and AGND will program the 2W
impedance to be Z
L
.
Resistor divider pin for ZO, in conjunction with K
ZO
it defines the 2W impedance.
DC feed reference pin.
5
11
6
12
R
N
R
DC
C
DC
C
P
V
EE
TIPSEN
7
13
8
14
DC feeding circuit low pass filter capacitor pin.
9
15
Half battery voltage reference pin.
10
16
Negative power supply pin, V
EE
= -5V at 5%.
Tip sense input pin.
11
17
12
18
BGND
Battery ground pin. This pin must be tied to the AGND and RGND pins.
13
19
R
PSG
NC
Power sharing resistor ground side connection pin.
14
No connect.
15
20
R
PST
TIP
Power sharing resistor Tip side connection pin.
16
21
Tip feed pin.
17
22
NC
No connect.
18
23
RING
Ring feed pin.
19
24
R
PSR
NC
Power sharing resistor Ring side connection pin.
20
25
No connect.
21
26
R
PSB
V
BAT
RINGSEN
Power sharing resistor battery side connection pin.
22
27
Battery power supply pin, V
BAT
= -42V to -58V.
Ring sense input pin.
23
28
24
29
R
BH
R
BL
C
RTD
RD
Ring trip amplifier ground side sense input pin.
25
30
Ring trip amplifier line side sense input pin.
26
31
Ring trip capacitor pin.
27
32
Ring relay driver pin, open collector output. Diode protected internally.
28
33
TB
Test access relay driver pin, open collector output. Diode protected internally.
29
34
TA
Test access relay driver pin, open collector output. Diode protected internally.
30
35
RGND
Relay driver ground current return pin. This pin must be tied to the AGND and BGND pins.
31
36
V
CC
NC
Positive power supply pin, V
CC
= +5V at 5%.
No connect.
32
37
33
38
NC
No connect.
34
39
NC
No connect.
40
NC
No connect.
35
41
TAI
TA Relay Driver Control Input.
36
42
TBI
TB Relay Driver Control Input.
37
43
RCI
RD Relay Driver Control Input.
38
44
PRI
Loop Feed Polarity Control Input.
39
1
PDI
Loop Feed Control Input.
40
2
NC
No connect.
41
3
NC
No connect.
42
4
TSDO
Thermal Shutdown Indicator Output.
43
5
SHDO
Off Hook Detect Indicator Output.
44
6
NC
No connect.
HC5520
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HC5520CM | 制造商:HARRIS 制造商全稱:HARRIS 功能描述:CO/PABX Polarity Reversal Subscriber Line Interface Circuit |
| HC5520CQ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HC5521 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:SLIC Subscriber Line Interface Circuit |
| HC5521CM | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:SLIC Subscriber Line Interface Circuit |
| HC5521CQ | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:SLIC Subscriber Line Interface Circuit |
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