參數(shù)資料
型號： HC5503PRC
廠商： Intersil Corporation
英文描述： Low Cost SLIC For Large Telecom Switches(低成本應用于大型電信開關的用戶線接口)
中文描述： 低成本用戶接口對于大型電信交換機（低成本應用于大型電信開關的用戶線接口）
文件頁數(shù)： 5/7頁
文件大小： 70K
代理商： HC5503PRC
4-5
Functional Diagram
18
15
PD
Power Denial - A low active TTL - Compatible logic input. When enabled, the ring feed voltage collapses to
the tip feed voltage (~4V). The DC feed is disabled, but the AC transmission is maintained. The switch hook
detect (SHD) is not necessarily valid, and the relay driver (RD) output is disabled.
19
16
RC
Ring Command - A low active TTL - Compatible logic input. When enabled, the relay driver (RD) output goes
low on the next high level of the ring sync (RS) input, as long as the SLIC is not in the power denial state
(PD = 0) or the subscriber is not already off- hook (SHD = 0).
20
17
NC
Leave disconnected.
21
18
OUT
The analog output of the spare operational amplifier.
23
19
-IN
The inverting analog input of the spare operational amplifier.
24
20
+IN
The non-inverting analog input of the spare operational amplifier.
25
21
RX
Receive Input, Four Wire Side - A high impedance analog input which is internally biased. Capacitive
coupling to this input is required. AC signals appearing at this input differentially drive the Tip feed and Ring
feed terminals.
26
22
C
2
Capacitor #2 - An external capacitor to be connected between this terminal and analog ground. This
capacitor is required for the proper operation of ring trip detection. Recommended value 0.82
μ
F
±
10% 10V
non-polarized.
27
23
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
24
TX
Transmit Output, Four Wire Side - A low impedance analog output proportional to the loop current.
Transhybrid balancing must be performed 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
24 PIN
DIP/SOIC
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
R
P
RING
R
S
RF
BG
TF
TIP
RD
RC
RS
RING SYNC
RING COMMAND
RING
TRIP
SHD
TX
TRANSMIT
OUTPUT
OUT
+IN
-IN
RX
RECEIVE
INPUT
SLIC MICROCIRCUIT
1/2 RING
RELAY
V
B
-
RING
VOLTAGE
RFS
1/2 RING
RELAY
R
S
SWITCH HOOK
DETECTION
-1
+1
BATTERY
FEED
LOOP
CURRENT
LIMITER
R
P
R
S
: SENSE RESISTOR
R
P
: PROTECTION RESISTOR
HC5503PRC
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相關代理商/技術參數(shù)
參數(shù)描述
HC5503PRC_04 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Cost SLIC For Large Telecom Switches
HC5503PRCB 制造商:Rochester Electronics LLC 功能描述:LOW COST SLIC FOR LONG LOOPS,24 SOIC - Bulk
HC5503PRCBZ 功能描述:電信線路管理 IC COST SLIC FOR LONG LOOPS 24 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
HC5503PRCBZ96 功能描述:電信線路管理 IC HC5503PRCB IN TAPE & RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
HC5503PRCM 制造商:Rochester Electronics LLC 功能描述:- Bulk
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