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Renesas HC9P5504B-5Z
- Part No.:
- HC9P5504B-5Z
- Manufacturer:
- Renesas
- Category:
- Telecom
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
HC9P5504B-5Z.pdf
- Description:
- IC SLIC EIA/ITU PABX 24-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,675
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Product details
Overview
HC9P5504B-5Z from Intersil is a monolithic EIA/ITU-compliant SLIC (Subscriber Line Interface Circuit) designed for analog and digital PBX systems. It integrates BORSHT functions-battery feed (41mA loop current), ring relay drive, switch hook/ground key detection, and transhybrid balancing-with dual-supply operation (VB+ = 5V or 12V, VB− = −42V to −58V) and Pb-free SOIC-24 packaging. It enables solid-state line interface in DID trunks and voice messaging PBXs.
For engineers reviewing the HC9P5504B-5Z datasheet, HC9P5504B-5Z pinout, HC9P5504B-5Z application, or HC9P5504B-5Z equivalent, this page delivers verified technical context, real-world SLIC design parameters, validated pin-level circuit roles, and confirmed alternative options for PBX line card development.
Technical Context
The HC9P5504B-5Z implements dielectric-isolated bipolar process technology to support direct interfacing with −48V station battery while maintaining longitudinal balance ≥58dB (off-hook, 200Hz–3.4kHz). Its integrated ring relay driver provides TTL-compatible open-collector output (RD) with <0.5V VOL at 62mA, synchronized via RS input aligned to ring voltage zero-crossing.
It features dual ground domains (AG, BG, DG), uncommitted op amp (±6.2V swing at VB+ = 12V), and selective power denial logic (PD input) that disables SHD/GKD outputs and RD during overload. Loop current limiting is externally capacitor-controlled (C3 = 0.3µF), delivering 36–48mA at RL = 200Ω and ±2mA during power denial.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VB+ = 4.75–5.25V or 10.8–13.2V; VB− = −42V to −58V - supports legacy −48V battery and dual-voltage system compatibility |
| Loop Current (RL = 200Ω) | 36–48mA - ensures reliable off-hook detection and speech transmission on short loops |
| Transhybrid Loss | 36–40dB - enables effective 2-wire to 4-wire conversion with external balance network |
| Longitudinal Balance | 58–65dB (2-wire off-hook) - maintains signal integrity against induced power-line noise |
| Ring Relay Drive VOL | <0.5V at 62mA - guarantees robust activation of external electromechanical ring relay |
| Power Denial Residual Current | ±2mA at RL = 200Ω - limits loop loading during emergency system overload |
| Idle Channel Noise | −89 to −85dBm0p - meets ITU-T G.111 requirements for voice-grade channel quietness |
Pinout & Package
HC9P5504B-5Z is housed in a Pb-free 24-lead SOIC package (M24.3), compatible with standard surface-mount assembly and IPC/JEDEC J-STD-020B Pb-free reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TIP (1) | Analog loop terminal (positive side) | Connects to subscriber TIP via 150Ω feed resistor; used for voice receive and loop monitoring |
| RING (2) | Analog loop terminal (negative side) | Connects to subscriber RING via 150Ω feed resistor; pairs with TIP for full-duplex signaling |
| RFS (3) | RING Feed Sense node | Senses ring-side DC conditions for ground key/ring trip detection; isolated from RF during ringing |
| VB+ (4) | Positive supply input | Accepts 5V or 12V; powers internal logic, amplifiers, and relay driver |
| C3 (5) | Loop current limit capacitor connection | External 0.3µF capacitor sets precise 41mA feed current and filters VB− ripple |
| DG (6) | Digital ground reference | Reference for RS, RC, PD, RD, SHD, GKD logic I/O; must be connected before VB+ or VB− |
| RS (7) | Ring synchronization clock input | TTL-compatible input timed to ring voltage zero-crossing to minimize relay arcing |
| RD (8) | Ring relay driver output | Open-collector, low-active output driving external relay coil; disabled during PD assertion |
| TF (9) | TIP feed amplifier output | Low-impedance source sinking longitudinal current; drives TIP through 150Ω feed resistor |
| RF (10) | RING feed amplifier output | Paired with TF to deliver balanced loop feed and voice transmit signals |
| VB− (11) | Negative supply input | −42V to −58V battery input; primary source for loop feed current and hybrid bias |
| BG (12) | Battery ground return | Return path for all loop current and quiescent battery current; separate from AG/DG |
| SHD (13) | Switch hook detection output | Low-active TTL output asserted when loop current >10mA (off-hook); disabled during PD |
| GKD (14) | Ground key detection output | Low-active TTL output triggered by >20mA net DC current into RING vs TIP (ground key event) |
| PD (15) | Power denial control input | Low-active logic input enabling emergency system protection by disabling SHD/GKD/RD |
| RC (16) | Ring command input | Low-active TTL input initiating RD activation on next RS edge, unless PD or SHD active |
| C2 (17) | Ground key noise filter capacitor | 0.15µF cap prevents false GKD during ring trip; optional if ground key function unused |
| OUT (18) | Uncommitted op amp output | ±6.2V swing at VB+ = 12V; used for transhybrid balancing or auxiliary signal conditioning |
| −IN (19) | Inverting input of spare op amp | Configurable as transhybrid balancer or active filter; differential input impedance = 1MΩ |
| +IN (20) | Non-inverting input of spare op amp | Used with −IN and OUT to implement 4-wire termination networks per ITU-T G.111 |
| RX (21) | 4-wire receive input | High-Z, internally biased input for PCM codec or filter; requires AC coupling |
| C4 (22) | Longitudinal noise suppression capacitor | 0.5–1.0µF nonpolarized cap suppresses false ring trip/GKD from power-line induction |
| AG (23) | Analog ground reference | Reference for RX, TX, +IN, −IN, OUT; must be connected before VB+ or VB− per reliability note |
| TX (24) | 4-wire transmit output | Unbalanced, ground-referenced output representing TIP–RING differential; requires AC coupling |
Key Features
| Feature | Design Value |
|---|---|
| Pb-free SOIC-24 packaging | Meets RoHS and J-STD-020B reflow standards; 100% matte tin terminations compatible with SnPb and Pb-free soldering |
| Selective power denial logic | PD input disables loop feed, SHD, GKD, and RD during PBX overload-limits total system current draw without hardware reset |
| Integrated ring relay driver | On-chip driver eliminates external transistor stage; supports 5–12V relay coils with <0.5V saturation at 62mA load |
| Dual-supply flexibility | VB+ supports both 5V (low-power standby) and 12V (full-loop-current) operation-enables mixed-voltage line card designs |
| Longitudinal current immunity | Withstands 30mARMS longitudinal surge (15mARMS/leg); maintains >58dB balance under induced 50/60Hz interference |
| Uncommitted operational amplifier | Gain-bandwidth = 1MHz; output swing = ±6.2V at VB+ = 12V-used for transhybrid balancing or secondary signal processing |
Applications
| Direct Inward Dial (DID) Trunks | Voice Messaging PBXs |
|---|---|
Use Scenario: High-density DID trunk cards handling simultaneous inbound calls with caller ID and call progress tone generation. IC Role / Device Role / Timing Role: HC9P5504B-5Z serves as the full BORSHT line interface, providing battery feed, ring supervision, and 2-wire/4-wire conversion for each subscriber line. Use Value: Integrated loop current limiting (41mA) and ring trip detection enable accurate call state tracking without external sensing resistors or comparators. |
Use Scenario: Voice mail system line cards supporting message recording/playback with echo cancellation and low-noise analog front-end. IC Role / Device Role / Timing Role: HC9P5504B-5Z acts as the analog line interface, delivering transhybrid loss ≥36dB and idle noise ≤−85dBm0p for clean audio capture. Use Value: Uncommitted op amp (OUT/+IN/−IN) implements precision balance network, reducing echo return loss (ERL) to ≥24dB without discrete components. |
| Digital PBX Line Cards | Emergency Call System Interfaces |
Use Scenario: Modular digital PBX chassis requiring hot-swappable line cards with consistent loop performance across temperature (0°C to 75°C). IC Role / Device Role / Timing Role: HC9P5504B-5Z provides standardized SLIC functionality per line, including switch hook detection (SHD), ground key (GKD), and ring sync (RS) timing alignment. Use Value: Pin-for-pin compatibility with HC-5504 allows drop-in upgrade path; dielectric isolation ensures stable operation across −42V to −58V VB− range. |
Use Scenario: Public safety answering point (PSAP) interfaces where line reliability during grid faults or lightning surges is mission-critical. IC Role / Device Role / Timing Role: HC9P5504B-5Z functions as hardened line interface with longitudinal surge tolerance (±1000VPEAK) and selective power denial (PD) for overload containment. Use Value: Power denial mode reduces loop current to ±2mA during emergency, preventing thermal runaway while preserving basic supervision signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SLIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HC5504B-5Z | No Pb-free marking in part number; identical electrical specs, SOIC-24 package, and M24.3 footprint | Same use in PBX line cards; differs only in RoHS compliance documentation and traceability | Select HC5504B-5Z only if Pb-free certification is not required for final product compliance |
| SLIC2004A | Higher loop current (50mA), integrated DC-DC converter for VB+, and SPI interface for configuration | Supports software-configurable line states and self-powered operation-requires PCB redesign for power and control | Choose SLIC2004A when programmable supervision or single-supply operation is needed; not pin-compatible with HC9P5504B-5Z |
Compared with HC5504B-5Z, the HC9P5504B-5Z adds formal Pb-free qualification and tape-and-reel packaging (HC9P5504B-5ZX96), while SLIC2004A replaces fixed analog control with digital configurability and higher loop current-requiring layout changes and firmware integration.
Availability
HC9P5504B-5Z is available at Aetrix Electronics and suitable for Direct Inward Dial (DID) trunks, voice messaging PBXs, and digital PBX line cards requiring stable component supply across extended production lifecycles.
Supply support for HC9P5504B-5Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Intersil Corporation (now part of Renesas Electronics) is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for communications, industrial, and computing markets.
The HC-5504B family was developed specifically for EIA/ITU-compliant PBX line interface applications, emphasizing robust BORSHT integration, longitudinal noise immunity, and Pb-free manufacturability for telecom infrastructure.
FAQ
What is the maximum allowable longitudinal current for HC9P5504B-5Z?
The HC9P5504B-5Z withstands longitudinal currents up to 30mARMS (15mARMS per leg) without performance degradation, as specified in the Absolute Maximum Ratings table. This rating ensures reliable operation in environments with induced 50/60Hz power-line interference and meets ITU-T K.20 surge immunity guidelines for telecom equipment.
Does HC9P5504B-5Z support both 5V and 12V VB+ operation simultaneously?
No, HC9P5504B-5Z supports either 5V or 12V VB+ operation-not both simultaneously. The device's internal regulators and drivers are configured per selected VB+ level; mixing supplies violates Absolute Maximum Ratings and may damage the IC. Designers must choose one VB+ rail and maintain it across all HC9P5504B-5Z devices on the same line card.
How does the power denial (PD) function affect switch hook detection in HC9P5504B-5Z?
When PD is asserted (logic low), HC9P5504B-5Z disables SHD output validity-SHD may float or report incorrect states-and forces RD high-impedance. This ensures no unintended relay actuation or off-hook false positives during system overload, preserving PBX stability while maintaining basic loop supervision via analog paths.
Can the uncommitted op amp in HC9P5504B-5Z be used for active filtering?
Yes, the uncommitted op amp (pins +IN, −IN, OUT) in HC9P5504B-5Z supports active filtering with 1MHz GBW, ±6.2V output swing (VB+ = 12V), and 1MΩ differential input resistance. It is commonly used for transhybrid balancing but can also implement anti-aliasing or reconstruction filters when interfaced with CODECs, provided external passive components meet stability criteria.
What is the purpose of the C4 capacitor in HC9P5504B-5Z applications?
C4 (0.5–1.0µF, nonpolarized) in HC9P5504B-5Z circuits suppresses false ring trip and ground key detections caused by longitudinal currents induced from nearby AC power lines. It forms a low-pass filter with internal circuitry to attenuate 50/60Hz noise while preserving valid ring signal edges, directly improving system reliability in electrically noisy central office environments.
HC9P5504B-5Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Subscriber Line Interface Concept (SLIC)
- Interface:
- -
- Number of Circuits:
- 1
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- 0°C ~ 75°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
HC9P5504B-5Z FAQ
1.How can I place an order for HC9P5504B-5Z through Aetrix?
Please submit a Request for Quotation (RFQ) for HC9P5504B-5Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HC9P5504B-5Z reliable?
The price and inventory of HC9P5504B-5Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HC9P5504B-5Z is usually 5 days.
3.What payment methods are accepted for HC9P5504B-5Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HC9P5504B-5Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HC9P5504B-5Z?
HC9P5504B-5Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HC9P5504B-5Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HC9P5504B-5Z?
For technical support, including HC9P5504B-5Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HC9P5504B-5Z requirements.
6.How does Aetrix verify that HC9P5504B-5Z is sourced from the original manufacturer or authorized distributors?
All HC9P5504B-5Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HC9P5504B-5Z meets industry standards.
7.What is the process for return or replacement of HC9P5504B-5Z?
All HC9P5504B-5Z units undergo pre-shipment inspection (PSI). If there is an issue with HC9P5504B-5Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HC9P5504B-5Z part is unused and in its original packaging.
Return procedure for HC9P5504B-5Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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