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Renesas HC55184ECMZ
- Part No.:
- HC55184ECMZ
- Manufacturer:
- Renesas
- Category:
- Telecom
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
HC55184ECMZ.pdf
- Description:
- IC TELECOM INTERFACE 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,819
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Product details
Overview
HC55184ECMZ from Intersil is a high-voltage ringing subscriber line interface circuit (RSLIC) designed for POTS telephony systems, supporting up to 75V battery operation, 95V peak ringing amplitude at 5 REN, sinusoidal or trapezoidal ringing waveforms, and integrated battery switch with silent polarity reversal. It delivers 45dB longitudinal balance and operates in commercial temperature range (0°C to +70°C) in 28-lead PLCC packaging.
For engineers reviewing the HC55184ECMZ datasheet, HC55184ECMZ pinout, HC55184ECMZ application, or HC55184ECMZ equivalent, this device serves as a critical analog front-end for wireless local loop, SOHO PBX, and ISDN terminal equipment requiring robust loop supervision, low standby power (50mW), and MTU-compliant DC feed characteristics.
Technical Context
The HC55184ECMZ implements a voltage-feed amplifier architecture with low fixed loop gains to achieve high analog performance and noise immunity. Its DC control logic supports seven operating modes-including Low Power Standby (F2:F1:F0 = 000), Forward Active (001), Ringing (100), and Power Denial (111)-with E0 selecting between switch hook and ground key detection.
It integrates a dielectric-isolated (DI) bipolar process enabling ±115V tip/ring pulse tolerance and thermal shutdown with ALM output. The device uses external resistors (RIL, RSH, RRT) to program loop current limit (15–45mA), switch hook threshold (5–15mA), and ring trip detection, while CDC (4.7µF) sets the low-pass filter pole for DC loop feed stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Battery Voltage Range | Operates up to 75V VBH; enables extended loop lengths beyond 5,000 ft with 95V ringing capability. |
| Peak Ringing Amplitude | 95V at 5 REN; meets international ringing requirements for analog telephony endpoints. |
| Longitudinal Balance | 45dB (Grade E); ensures rejection of common-mode noise on twisted-pair lines. |
| Standby Power Consumption | 50mW typical; minimizes energy use during idle line conditions without compromising MTU compliance. |
| Operating Temperature | 0°C to +70°C; validated for commercial-grade telecom infrastructure deployment. |
| Package | 28-lead PLCC (Pb-free, RoHS compliant); compatible with standard surface-mount reflow profiles. |
| Ringing Waveform Support | Sinusoidal or trapezoidal; selectable via control logic for interoperability with legacy and modern CODECs. |
Pinout & Package
HC55184ECMZ is housed in a 28-lead plastic leaded chip carrier (PLCC) package with Pb-free (e3) matte tin termination, MSL-3 rated per J-STD-020. Pinout is validated per FN4519 Rev 8.00, Page 3 top-view diagram for HC55184.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RING | 2-wire line interface (ring side) | High-voltage output node for analog telephony loop; supports ±115V transient pulses. |
| TIP | 2-wire line interface (tip side) | Complementary high-voltage output; forms differential pair with RING for balanced signaling. |
| VRS | Ringing signal input | Accepts AC ringing waveform (sinusoidal/trapezoidal) from CODEC; impedance 480kΩ. |
| VRX | Receive input | 4-wire port input for voice/data signals; 160kΩ input impedance, C-message noise ≤19 dBrnC. |
| VTX | Transmit output | 4-wire port output driving CODEC; 2-wire to 4-wire insertion loss −6.02 dB typical. |
| ILIM | Loop current limit programming | Connects external resistor (RIL = 1760/ILIM Ω) to set 15–45mA current limit. |
| POL | Polarity reversal control | Enables silent polarity reversal-unique to HC55184 vs HC55183; avoids audible click during polarity change. |
| DET | Switch hook / ground key detector output | Open-drain logic output indicating off-hook (low) or on-hook (high); drives external interrupt or status LED. |
| ALM | Thermal alarm indicator | Active-low output asserted when junction temperature exceeds 175°C; enables system-level thermal management. |
| F2,F1,F0 | Operating mode select inputs | 3-bit binary code selects among 7 functional modes (e.g., 100 = Ringing, 000 = Low Power Standby). |
| E0 | Detection mode select | Selects switch hook detect (E0=1) or ground key detect (E0=0); determines DET behavior. |
| BSEL | Battery select | Chooses high (VBH) or low (VBL) battery supply path; critical for MTU compliance and power optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Silent Polarity Reversal | Eliminates audible click during polarity switching-essential for PBX and WLL applications where user experience matters. |
| Integrated Battery Switch | On-chip high-voltage switch enables seamless transition between VBH and VBL supplies without external FETs or drivers. |
| MTU-Compliant Standby | Maintains 42.75–56V tip-to-ring voltage during low-power standby, satisfying maintenance termination unit specifications. |
| Robust Loop Supervision | Programmable switch hook (5–15mA) and fixed ground key (12mA) detection with dedicated DET output. |
| Thermal Shutdown with Alarm | Automatic shutdown at 175°C junction temperature plus active-low ALM signal for fault logging and recovery. |
Applications
| Wireless Local Loop (WLL) | Digital Added Main Line (DAML) |
|---|---|
|
Use Scenario: Remote base station serving analog phones over microwave or cellular backhaul. IC Role / Device Role / Timing Role: Analog front-end SLIC providing battery feed, ringing, and loop supervision for POTS extension. Use Value: Enables 75V operation and 95V ringing to support loop lengths >5,000 ft without repeaters. |
Use Scenario: Carrier-grade pair-gain system adding digital capacity to existing copper pairs. IC Role / Device Role / Timing Role: High-reliability line interface delivering MTU-compliant standby and forward/reverse active modes. Use Value: 45dB longitudinal balance and low idle noise (≤19 dBrnC) ensure clear voice transmission in multi-drop environments. |
| SOHO PBX | ISDN Terminal Adapter |
|
Use Scenario: Small office telephone system connecting analog handsets to VoIP or TDM backbone. IC Role / Device Role / Timing Role: Dual-role SLIC handling both ringing generation and 2-wire/4-wire hybrid conversion. Use Value: Silent polarity reversal prevents disruptive clicks during call setup-critical for professional environments. |
Use Scenario: ISDN BRI NT1/TE adapter bridging digital S/T bus to analog phone lines. IC Role / Device Role / Timing Role: Analog line driver/receiver with integrated CODEC ringing interface and test access features. Use Value: Integrated RTD/RINGING port and loopback-capable control logic simplify compliance testing and field diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ringing SLIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HC55183ECMZ | Lacks POL pin and silent polarity reversal; otherwise identical pinout, specs, and package. | Not suitable where polarity reversal must be inaudible (e.g., PBX, premium WLL). | Select HC55183ECMZ only if silent polarity reversal is unnecessary and cost reduction is prioritized. |
| SLIC26010-100 | 100V max battery rating; higher ringing voltage (100V); different pinout and control interface (SPI vs parallel). | Targets longer loops (>6,000 ft); requires PCB redesign and firmware adaptation. | Choose SLIC26010-100 only when extending reach beyond 5,000 ft and redesign is feasible. |
Compared with HC55184ECMZ, HC55183ECMZ omits silent polarity reversal but retains full compatibility for basic POTS applications, while SLIC26010-100 offers higher voltage headroom at the cost of pin and protocol incompatibility-making HC55184ECMZ optimal for drop-in upgrades in 75V-class WLL and SOHO systems.
Availability
HC55184ECMZ is available at Aetrix Electronics and suitable for wireless local loop, SOHO PBX, and ISDN terminal equipment requiring stable component supply across industrial and telecom production cycles.
Supply support for HC55184ECMZ 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 (now part of Renesas Electronics) is a semiconductor company specializing in high-performance analog and mixed-signal ICs for communications, computing, and industrial markets.
The HC55184ECMZ belongs to the RSLIC18™ family of ringing SLICs, engineered specifically for analog telephony infrastructure demanding extended loop reach, low standby power, and robust noise immunity in POTS-compatible systems.
FAQ
What is the maximum battery voltage supported by HC55184ECMZ?
The HC55184ECMZ supports a maximum high-side battery voltage (VBH) of 75V, enabling extended subscriber loop lengths up to 5,000 feet. This rating is validated per absolute maximum ratings in FN4519 Rev 8.00 and directly determines achievable ringing amplitude (95V peak at 5 REN). Operation above 75V risks permanent damage and voids warranty compliance.
Does HC55184ECMZ support silent polarity reversal, and how is it implemented?
Yes, HC55184ECMZ supports silent polarity reversal via the dedicated POL pin-unlike HC55183ECMZ. When asserted, POL enables internal sequencing that prevents audible click during polarity switching, a feature critical for PBX and premium WLL deployments. This functionality is confirmed in the Features table and Pinouts diagram on Page 3 of FN4519 Rev 8.00.
What is the purpose of the CDC capacitor in HC55184ECMZ circuits?
The CDC capacitor (typically 4.7µF) sets the low-pass filter pole for the DC loop feed control loop, blocking voice-band signals from interfering with loop current regulation. As specified in FN4519 Rev 8.00 Page 10, CDC stabilizes the feedback path during Forward Active mode, ensuring accurate 15–45mA current limiting without oscillation or drift under varying load conditions.
How does HC55184ECMZ achieve MTU compliance during low-power standby?
During Low Power Standby (LPS), HC55184ECMZ maintains tip-to-ring voltage between 42.75V and 56V using internal clamping and reference circuitry-meeting Maintenance Termination Unit (MTU) requirements. Per FN4519 Page 9, the Ring terminal is clamped to −49V while Tip is held near ground via a 600Ω resistor, ensuring idle-line DC integrity without active amplifiers.
What are the key differences between HC55184ECMZ and HC55183ECMZ?
The primary difference is the POL pin: HC55184ECMZ includes silent polarity reversal capability, while HC55183ECMZ does not. Both share identical pinout, 75V rating, 45dB longitudinal balance, and PLCC-28 packaging. Functionally, HC55183ECMZ supports only Forward Active mode, whereas HC55184ECMZ supports Forward/Reverse Active-verified in the Device Operating Modes table on FN4519 Page 2.
HC55184ECMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Subscriber Line Interface Concept (SLIC)
- Interface:
- 2-Wire
- Number of Circuits:
- 1
- Voltage - Supply:
- 5V
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-PLCC
HC55184ECMZ FAQ
1.How can I place an order for HC55184ECMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for HC55184ECMZ 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 HC55184ECMZ reliable?
The price and inventory of HC55184ECMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HC55184ECMZ is usually 5 days.
3.What payment methods are accepted for HC55184ECMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HC55184ECMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HC55184ECMZ?
HC55184ECMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HC55184ECMZ 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 HC55184ECMZ?
For technical support, including HC55184ECMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HC55184ECMZ requirements.
6.How does Aetrix verify that HC55184ECMZ is sourced from the original manufacturer or authorized distributors?
All HC55184ECMZ 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 HC55184ECMZ meets industry standards.
7.What is the process for return or replacement of HC55184ECMZ?
All HC55184ECMZ units undergo pre-shipment inspection (PSI). If there is an issue with HC55184ECMZ, 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 HC55184ECMZ part is unused and in its original packaging.
Return procedure for HC55184ECMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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