Overview
The MC1488DR2G, produced by onsemi, is a quad line driver designed to interface data terminal equipment with data communications equipment in compliance with the EIA-232D standard. This monolithic device is part of onsemi's wired transceivers and modems product group. It is specifically engineered to convert DTL (Diode-Transistor Logic) or TTL (Transistor-Transistor Logic) logic levels into EIA-232D defined levels, ensuring compatibility and reliability in data communication systems.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Power Supply Voltage | VCC, VEE | +7.0, -2.5 | - | +15, -15 | Vdc |
| Input Voltage Range | VIR | -15 | - | 7.0 | Vdc |
| Output Signal Voltage | VO | -15 | - | +15 | Vdc |
| Operating Ambient Temperature Range | TA | 0 | - | 75 | °C |
| Storage Temperature Range | Tstg | -65 | - | 175 | °C |
| Input Current - Low Logic State | IIL | -1.0 | -1.6 | - | mA |
| Input Current - High Logic State | IIH | - | - | -10 | μA |
| Output Voltage - High Logic State | VOH | - | - | 15 | Vdc |
| Propagation Delay Time | tPLH, tPHL | 275, 110 | 350, 175 | - | ns |
| Rise Time, Fall Time | tTLH, tTHL | 55, 45 | 100, 75 | - | ns |
Key Features
- Current Limited Output: The MC1488DR2G has a current limited output of ±10 mA typical, which helps in controlling the output voltage levels independent of power supplies.
- Simple Slew Rate Control: The device allows for simple slew rate control using an external capacitor to meet the EIA-232D requirement of not exceeding 30 V per microsecond during transitions.
- Flexible Operating Supply Range: The positive supply can vary from 7.0 V to 15 V, and the negative supply can vary from -2.5 V to -15 V, providing flexibility in power supply designs.
- Compatibility with Logic Families: The device is compatible with all ON Semiconductor DTL and TTL logic families.
- Power-Off Source Impedance: The device has a power-off source impedance of 300 Ω minimum.
- Pb-Free Packages Available: The MC1488DR2G is available in Pb-free packages, making it suitable for environmentally friendly designs.
Applications
The MC1488DR2G is designed for various applications, including:
- EIA-232D Interface: It provides a complete interface system between DTL or TTL logic levels and EIA-232D defined levels, making it suitable for data communication equipment.
- DTL to MOS Translation: The device can be used as a DTL to MOS translator by clamping the output voltage levels using diodes.
- Logic Translation: It can be used for DTL to DTL, DTL to HTL (High Threshold Logic), and DTL to RTL (Resistor-Transistor Logic) translations due to its flexible output voltage capabilities.
- General Data Communication: The MC1488DR2G is versatile and can be used in a myriad of data communication applications where EIA-232D compliance is required.
Q & A
- What is the primary function of the MC1488DR2G?
The MC1488DR2G is a quad line driver designed to interface data terminal equipment with data communications equipment in compliance with the EIA-232D standard.
- What are the power supply voltage ranges for the MC1488DR2G?
The positive supply can vary from 7.0 V to 15 V, and the negative supply can vary from -2.5 V to -15 V.
- How does the MC1488DR2G control slew rate?
The device allows for simple slew rate control using an external capacitor to meet the EIA-232D requirement of not exceeding 30 V per microsecond during transitions.
- What is the current limited output of the MC1488DR2G?
The current limited output is ±10 mA typical.
- Is the MC1488DR2G compatible with all ON Semiconductor logic families?
Yes, it is compatible with all ON Semiconductor DTL and TTL logic families.
- What are the operating and storage temperature ranges for the MC1488DR2G?
The operating temperature range is 0 to 75°C, and the storage temperature range is -65 to 175°C.
- Can the MC1488DR2G withstand accidental shorts to other conductors?
Yes, it is designed to indefinitely withstand such shorts as long as the power supply voltages are greater than 9.0 V.
- How can power supply protection be implemented for the MC1488DR2G?
Diodes can be placed in each power supply lead to prevent overheating in fault conditions.
- What are some common applications of the MC1488DR2G?
It is used in EIA-232D interfaces, DTL to MOS translation, logic translation, and general data communication applications.
- Is the MC1488DR2G available in Pb-free packages?
Yes, it is available in Pb-free packages.
