UCC2750DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC2750DWG4 is a telephone ringer controller IC from Texas Instruments that generates standard 20 Hz, 25 Hz, and 50 Hz ringing frequencies from a 5V supply, packaged in a 28-pin SOIC for surface-mount assembly. It integrates the ringing signal synthesis and line drive functions required for PSTN and POTS terminal equipment. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- UCC2750DWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated ringer controller supporting 20 Hz, 25 Hz, and 50 Hz ringing frequencies covers global PSTN telephone network standards
- 5V single-supply operation simplifies power architecture in telephone terminal and subscriber line interface card designs
- 28-pin SOIC (R-PDSO-G28) surface-mount package with 260°C peak reflow compatibility suits modern automated PCB assembly
- Single-function dedicated ringer controller reduces external component count and simplifies SLIC and CPE reference designs
Applications
The UCC2750DWG4 is designed for use in plain old telephone service (POTS) subscriber line interface circuits (SLICs), analog telephone adapters (ATAs), and customer premises equipment (CPE) that require compliant AC ringing signal generation. It is applicable in residential and commercial analog telephone sets, DSL modems with integrated POTS splitters, and enterprise PBX line cards where 20 Hz, 25 Hz, or 50 Hz ring cadence must be generated from a 5V logic supply. The 28-pin SOIC package enables compact board layouts in multi-line telephone equipment and VoIP gateway designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Telecom IC Type | TELECOM CIRCUIT |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC2750DWG4:
Frequently Asked Questions
What ringing frequencies does the UCC2750DWG4 support?
The UCC2750DWG4 supports 20 Hz, 25 Hz, and 50 Hz ringing frequencies, covering the standard ring cadence requirements of telephone networks in North America (20 Hz), Europe (25 Hz and 50 Hz), and other global regions. This multi-frequency support simplifies the design of internationally compliant PSTN terminal equipment.
What supply voltage does the UCC2750DWG4 require?
The UCC2750DWG4 operates from a 5V supply voltage, making it compatible with standard digital logic supply rails used in subscriber line interface card (SLIC) and customer premises equipment (CPE) designs. This eliminates the need for a separate high-voltage supply just for the ringer controller function.
What package does the UCC2750DWG4 use?
The UCC2750DWG4 is housed in a 28-pin plastic small-outline IC (SOIC) package, JESD-30 code R-PDSO-G28. The package is compatible with a peak reflow temperature of 260°C, making it suitable for standard lead-free solder reflow assembly processes used in modern PCB manufacturing.
What is the primary application of the UCC2750DWG4?
The UCC2750DWG4 is primarily used in telephone ringer circuits within POTS subscriber line interfaces, analog telephone adapters, PBX line cards, and DSL gateway designs. It generates the AC ringing waveform required to alert the telephone terminal of an incoming call, handling frequencies used across major global telephone standards.
Is the UCC2750DWG4 RoHS compliant and is it still in production?
The UCC2750DWG4 carries a Pb-free designation (JESD-609 code e4) and is RoHS compliant. However, the YTEOL value of 0 indicates it may be approaching or at end-of-life status. Buyers should verify current availability and lifecycle status with authorized Texas Instruments distributors before designing it into new production programs.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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