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參數(shù)資料
| 型號(hào)： | HC5503CBZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 模擬傳輸電路 |
| 英文描述： | Low Cost 24V SLIC For PABX / Key Systems |
| 中文描述： | TELECOM-SLIC, PDSO24 |
| 封裝： | GREEN, PLASTIC, MS-013AD, SOIC-24 |
| 文件頁(yè)數(shù)： | 12/17頁(yè) |
| 文件大?。?/td> | 386K |
| 代理商： | HC5503CBZ |
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12
Pin Descriptions
24 PIN
SOIC
SYMBOL
DESCRIPTION
1
TIP
An analog input connected to the TIP (more positive) side of the subscriber loop. Functions with the Ring terminal to
receive voice signals from the telephone and for loop monitoring purposes.
2
RING
An analog input connected to the RING (more negative) side of the subscriber loop. Functions with the Tip terminal to
receive voice signals from the telephone and for loop monitoring purposes.
3
RFS
Senses ring side of loop for ring trip detection. During ringing, the ring signal is inserted into the line at this node and
RF is isolated from RFS via a relay.
4
V
CC
C
1
Positive Voltage Source - Most positive supply. V
CC
is typically 5V.
Capacitor #1 - An external capacitor to be connected between this terminal and analog ground. Required for proper operation
of the loop current limiting function, and for filtering V
BAT
. Typical value is 0.3
μ
F, 16V.
Digital Ground - To be connected to zero potential and serves as a reference for all digital inputs and outputs on the
SLIC microcircuit.
5
6
DG
7
RS
Ring Synchronization Input - A TTL - compatible clock input. The clock should be arranged such that a positive pulse
transition occurs on the zero crossing of the ring voltage source, as it appears at the RFS terminal. For Tip side injected
systems, the RS pulse should occur on the negative going zero crossing and for Ring injected systems, on the positive
going zero crossing. This ensures that the ring relay activates and deactivates when the instantaneous ring voltage is
near zero. If synchronization is not required, the pin should be tied to 5V.
8
RD
Relay Driver - A low active open collector logic output. When enabled, the external ring relay is energized.
9
TF
Tip Feed - A low impedance analog output connected to the TIP terminal through a 150
feed resistor. Functions with
the RF terminal to provide loop current, feed voice signals to the telephone set, and sink longitudinal current.
10
RF
Ring Feed - A low impedance analog output connected to the RING terminal through a 150
feed resistor. Functions
with the TF terminal to provide loop current, feed voice signals to the telephone set, and sink longitudinal current.
11
V
BAT
BG
Negative Voltage Source - Most negative supply. V
BAT
is typically -24V. Frequently referred to as “battery”.
Battery Ground - To be connected to zero potential. All loop current and some quiescent current flows into this ground
terminal.
12
13
SHD
Switch Hook Detection - A low active LS TTL - compatible logic output. This output is enabled for loop currents
exceeding 10.5mA and disabled for loop currents less than 5mA.
15
PD
Power Denial - A low active TTL - Compatible logic input. When enabled, the switch hook detect (SHD) is not
necessarily valid, and the relay driver (RD) output is disabled.
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 (R
S
) 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).
21
R
X
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 deferentially drive the Tip feed and Ring feed terminals, which in turn drive tip
and ring through 150
of feed resistance on each side of the line.
22
C
2
Capacitor #2 - An external capacitor to be connected between this terminal and analog ground. This capacitor prevents
false ring trip detection from occurring when longitudinal currents are induced onto the subscriber loop from nearby
power lines and other noise sources. Recommended value is 1.0
μ
F, 20V. This capacitor should be nonpolarized.
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.
24
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 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.
14
NC
Used during production testing. For proper operation of the SLIC, this pin should float.
17, 18, 19,
20
NC
No internal connection.
NOTE: All grounds (AG, BG, and DG) must be applied before V
CC
or V
BAT
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.
HC5503
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HC5503CBZ96 | Low Cost 24V SLIC For PABX / Key Systems |
| HC5503CCP | Bipolar Transistor; Collector Emitter Voltage, Vceo:50V; Transistor Polarity:NPN; Power Dissipation:900mW; DC Current Gain Min (hfe):180; Collector Current:500A; Package/Case:3-TO-92 |
| HC5503CCB | Unbalanced PBX/Key System SLIC, Subscriber Line Interface Circuit |
| HC5503TCB | Bipolar Transistor; Collector Emitter Voltage, Vceo:50V; Transistor Polarity:NPN; Power Dissipation:900mW; DC Current Gain Min (hfe):180; Collector Current:500A; Package/Case:3-TO-92 |
| HC5503TCP | Bipolar Transistor; Collector Emitter Voltage, Vceo:50V; Transistor Polarity:PNP; Power Dissipation:900mW; DC Current Gain Min (hfe):180; Collector Current:500A; Package/Case:3-TO-92 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HC5503CBZ96 | 功能描述:電信線路管理 IC HC5503CBEL 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(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| HC5503CCB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HC5503CCP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HC5503CM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HC5503CM96 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
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