Overview
The UA9638CD, produced by Texas Instruments, is a dual high-speed differential line driver designed to meet the ANSI Standard EIA/TIA-422-B. This device operates from a single 5V power supply and is available in both SOIC (D, 8-pin) and PDIP (P, 8-pin) packages. It is characterized for operation from 0°C to 70°C and is used for high-speed differential data transmission, typically up to 15Mbps in properly designed systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| Input Voltage Range (VI) | -0.5 | 7 | V | |
| Operating Free-Air Temperature (TA) | 0 | 70 | °C | |
| High-Level Input Voltage (VIH) | 2 | V | ||
| Low-Level Input Voltage (VIL) | 0.8 | V | ||
| High-Level Output Current (IOH) | -50 | mA | ||
| Low-Level Output Current (IOL) | 50 | mA | ||
| Differential Output Delay Time (td(OD)) | 10 | 20 | ns | |
| Differential Output Transition Time (tt(OD)) | 10 | 20 | ns | |
| Output Skew (tsk(o)) | 1 | ns |
Key Features
- Meets or exceeds ANSI Standard EIA/TIA-422-B.
- Operates from a single 5V power supply.
- Drives loads as low as 50Ω up to 15Mbps.
- TTL- and CMOS-input compatibility.
- Output short-circuit protection.
- Interchangeable with DS9638.
Applications
- Factory automation.
- ATM and cash counters.
- Smart grid.
- AC and servo motor drives.
Q & A
- What is the UA9638CD used for? The UA9638CD is used as a dual high-speed differential line driver for high-speed data transmission, particularly in applications requiring compliance with ANSI Standard EIA/TIA-422-B.
- What are the operating voltage and temperature ranges of the UA9638CD? The device operates from a single 5V power supply and is characterized for operation from 0°C to 70°C.
- What are the input and output characteristics of the UA9638CD? The device has TTL- and CMOS-input compatibility, and it can drive loads as low as 50Ω up to 15Mbps. The high-level output current is -50 mA, and the low-level output current is 50 mA.
- What are the typical applications of the UA9638CD? Typical applications include factory automation, ATM and cash counters, smart grid, and AC and servo motor drives.
- Is the UA9638CD interchangeable with other devices? Yes, the UA9638CD is interchangeable with the DS9638.
- What is the maximum data transmission speed of the UA9638CD? The device can support data transmission speeds up to and exceeding 15Mbps in properly designed systems.
- What kind of protection does the UA9638CD have? The device has output short-circuit protection.
- In what packages is the UA9638CD available? The UA9638CD is available in both SOIC (D, 8-pin) and PDIP (P, 8-pin) packages.
- What are the thermal characteristics of the UA9638CD? The junction-to-ambient thermal resistance (RθJA) is 116.7°C/W for SOIC and 84.3°C/W for PDIP packages.
- How is the UA9638CD typically used in systems? It is typically used with twisted-pair cabling and differential receivers, such as the UA9637A dual line receiver.
