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| Balanced PBX / Key System SLIC, Subscriber Line Interface Circuit |
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| Ordering Information |
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 iBuy direct from Intersil
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 iBuy direct - out of stock
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 Request samples
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 Check distributor inventory
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Available in RoHS/Pb-Free
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| HC5503TCBZ |
Active |
Comm |
24 Ld SOIC |
3 |
2.20 |
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| HC5503TCBZ96 |
Active |
Comm |
24 Ld SOIC T+R |
3 |
2.33 |
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| HC5503TCB |
InActive |
Comm |
24 Ld SOIC |
1 |
N/A |
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| HC5503TCB96 |
InActive |
Comm |
24 Ld SOIC T+R |
1 |
N/A |
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| The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice. |
| MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020 |
| SMD = Standard Microcircuit Drawing |
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 Description |
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The Intersil HC5503T is a low cost Subscriber Line Interface Circuit (SLIC) that replaces the components of a discrete Transformer Analog circuit design. The monolithic integrated design provides improved performance and system reliability.
The HC5503T provides: Current limited DC feed to the subscriber loop, maintains a flat frequency response over the voice band and beyond, has self resetting thermal protection that allows conversation to continue while the fault is present, provides a TTL subscriber off hook indication even in the presence of longitudinal currents, and limits system power consumption on short loops.
The HC5503T provides balanced 2-wire transmission and has excellent longitudinal balance, while providing on hook transmission and longitudinal current rejection in both the on-hook or off-hook conditions. The SLIC needs only one +5V supply in addition to the main battery supply for loop current and operates over a range of battery voltages (-24V to -58V).
Available in 24SO packaging. The HC5503T is ideally suited as a replacement for discrete line circuits in low cost analog PABXs, small Office/Home Office products or Small Key Systems. |
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 Key Features |
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Monolithic Integrated Device
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Controlled Supply of Battery Feed Current for Short Loops (30mA)
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Single +5V Supply
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Allows Interfacing With All Ringing Systems
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Switch Hook Detection
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Compatible With Worldwide PBX Performance Requirements
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Low Power Consumption During Standby
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Pb-free Available
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| Related Documentation |
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 Application Note(s): |
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 Datasheet(s): |
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 Technical Homepage: |
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 Parametric Data |
| | Longitudinal Balance (dB) | | 53 | | | VS (V) | | -24, +5 | | | Loop Current Limit (mA) | | 30 | |
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| Applications |
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- PBX Switches (Analog, Digital or ISDN)
- Key Telephone Systems (KTS)
- ISDN PC Plug in Modems
- ISDN Small Office/Home Office (SOHO) Terminal Adapters (TA)
- CTI (Computer Telephony Integration) Products
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| | HC5503 | | Low Cost 24V SLIC For PABX / Key Systems | | | HC5504B | | EIA/ITU PABX SLIC with 40mA Loop Feed | |
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