1. Product Overview:

· Product Name: HT84 Series ADSL Coupling Transformers
· Manufacturer: Not explicitly stated, but likely a manufacturer of electronic components.
· Revision Date: 01/08/2003
· Key Features:
* Supports industry-standard ADSL/ADSL Lite transceivers
* Excellent total harmonic distortion (THD) characteristics
* Meets standard dielectric withstanding voltage requirements
* Conforms to ANSI, ITU, and ETSI standards
* Operating temperature range: -40°C to +85°C
* Customizable specifications.
· Applications: ADSL coupling transformers, designed for line rates up to 8 Mb/s, multiple data rates.

2. Model-Specific Electrical Characteristics (Table):

The core of the document is the table detailing characteristics for various models. Here's a summary of the columns and what they represent. *Note: It's difficult to fully present the table's structure in text, but I'll do my best to convey the information.*

· Model Number: (e.g., HT84-00594, HT84-99726) - Unique identifier for each transformer variant.
· Description: Not explicitly given in the table, assumed to relate to the specific ADSL/line driver it's designed to work with.
· Turns Ratio: The ratio of primary to secondary windings (e.g., 1:1:2:2, 1.41:1).
· Inductance: Measured in µH (microhenries) - related to the transformer's ability to store magnetic energy.
· Frequency Range: Specified in MHz (e.g., 0.2-2 MHz, 40-320 MHz).
· Loss (dB):
* dB Min - Minimum specified loss.
* dB Max - Maximum specified loss.
· Insertion (dB): Insertion Loss
· Longitudinal Balance (dB):
· THD (Total Harmonic Distortion): Measured in dB
· Figure/Sch: Diagram/Schematic Reference Number

3. Supported Devices/Compatibility:

The text lists numerous devices/components the HT84 Series is designed to work with. Some examples:

· Alcatel MTK20131/134AFE
· Motorola MCI145650 (MC03AX1256CO line driver)
· Analog Devices AD20MSP910/918
· Globespan 7M640
· Elantec EL-1501
· ITex Apollo II/STMicroelectronics

4. Specifications & Testing:

· OCL Test: Open Circuit Loss, tested at 10kHz, 100mV with appropriate IDC (Inductive Device Current).
· THD Test: Total Harmonic Distortion, tested at 5kHz with a 6Vp-p (peak-to-peak) signal using a 100-ohm load.
· Longitudinal Balance: Frequency range specified at 100 ohms.
· Dielectric Withstanding Voltage: Meets standard requirements (not quantified).

5. Packaging and Ordering:

· Standard Packaging: Plastic Tubes
* Capacity: 45 units for Figure 1
* Capacity: 60 units for Figures 2 & 3
· Ordering Information: Not explicitly provided, but likely involves model numbers and packaging codes.

6. Diagram References:

· Figure 1: Through-Hole
· Figure 2: Through-Hole
· Figure 3: Surface Mount

Important Notes/Limitations of the Text:

· Missing Details: Crucial details like manufacturer name, precise specifications of testing conditions are not clearly specified.
· Complex Table: The electrical characteristic table is difficult to fully represent due to the text format.
· Outdated Information: Given the revision date of 01/08/2003, the information may be outdated.