TIL193 Optocoupler Technical Summary

Overview

The TIL193 is a four-channel optocoupler designed to provide electrical isolation between input and output circuits. Each channel consists of a gallium-arsenide (GaAs) light-emitting diode (LED) coupled with a silicon npn phototransistor. The device is housed in a 16-pin package, making it suitable for applications requiring multiple isolated channels in a compact form factor.

The TIL193 is part of a family of optocouplers that includes the single-channel TIL191 (4-pin package) and the dual-channel TIL192 (8-pin package). These devices are available in standard and selected current-transfer ratio (CTR) versions, designated by suffixes A (50% minimum CTR) and B (100% minimum CTR) for higher performance requirements.

Features

• Four-Channel Isolation: Provides four independent optocoupler channels in a single 16-pin package.
• High Current-Transfer Ratio (CTR): Standard version tested for 20% minimum CTR, with options for 50% (TIL193A) and 100% (TIL193B) minimum CTR.
• GaAs LED and Silicon Phototransistor: Combines a gallium-arsenide LED with a silicon npn phototransistor for reliable performance.
• Electrical Isolation: Provides high voltage isolation between input and output circuits, enhancing safety and noise immunity.
• Wide Operating Temperature Range: Suitable for industrial and automotive applications.
• Compact Package: 16-pin DIP (Dual In-line Package) for space-efficient designs.

Applications

The TIL193 is designed for use in a variety of applications requiring signal isolation, noise immunity, or voltage level shifting. Common applications include:

• Industrial Control Systems: Isolate digital signals in PLCs (Programmable Logic Controllers) and motor control circuits.
• Power Supply Feedback: Provide isolated feedback in switch-mode power supplies (SMPS).
• Medical Equipment: Ensure patient safety by isolating sensitive circuits in medical devices.
• Telecommunications: Isolate data lines in communication equipment to prevent ground loops.
• Automotive Electronics: Used in vehicle control systems where electrical isolation is critical.
• Digital Logic Isolation: Interface between circuits operating at different voltage levels.

Electrical Characteristics

The following tables outline the key electrical specifications for the TIL193 optocoupler.

Absolute Maximum Ratings

• LED Forward Current (I_F): 60 mA (continuous)
• Reverse Voltage (V_R): 3 V
• Collector-Emitter Voltage (V_CEO): 30 V
• Emitter-Collector Voltage (V_ECO): 7 V
• Total Power Dissipation (P_tot): 250 mW
• Operating Temperature Range (T_A): -55°C to +100°C
• Storage Temperature Range (T_stg): -55°C to +125°C

Optical Characteristics

• Current-Transfer Ratio (CTR):
  • TIL193: 20% minimum
  • TIL193A: 50% minimum
  • TIL193B: 100% minimum
• LED Forward Voltage (V_F): 1.2 V (typical) at I_F = 10 mA
• Dark Current (I_CEO): 50 nA (maximum) at V_CE = 10 V

Switching Characteristics

• Turn-On Time (t_on): 4 µs (typical) at I_F = 10 mA, V_CC = 5 V
• Turn-Off Time (t_off): 3 µs (typical) at I_F = 10 mA, V_CC = 5 V

Package Information

The TIL193 is available in a 16-pin Dual In-line Package (DIP). The package dimensions and pinout are as follows:

Mechanical Dimensions

• Package Type: 16-pin DIP (Plastic)
• Body Length: 19.3 mm (max)
• Body Width: 6.35 mm (max)
• Lead Pitch: 2.54 mm (standard)
• Lead Length: 3.3 mm (min)

Pin Configuration

The pinout for the TIL193 is as follows (viewed from the top):

• Pin 1: Anode of Channel 1 LED
• Pin 2: Cathode of Channel 1 LED
• Pin 3: Anode of Channel 2 LED
• Pin 4: Cathode of Channel 2 LED
• Pin 5: Anode of Channel 3 LED
• Pin 6: Cathode of Channel 3 LED
• Pin 7: Anode of Channel 4 LED
• Pin 8: Cathode of Channel 4 LED
• Pin 9: Emitter of Channel 4 Phototransistor
• Pin 10: Collector of Channel 4 Phototransistor
• Pin 11: Emitter of Channel 3 Phototransistor
• Pin 12: Collector of Channel 3 Phototransistor
• Pin 13: Emitter of Channel 2 Phototransistor
• Pin 14: Collector of Channel 2 Phototransistor
• Pin 15: Emitter of Channel 1 Phototransistor
• Pin 16: Collector of Channel 1 Phototransistor

Conclusion

The TIL193 is a versatile four-channel optocoupler offering reliable electrical isolation and signal transmission in a compact 16-pin package. With options for standard and high current-transfer ratios, it is well-suited for industrial, automotive, and telecommunications applications where noise immunity and safety are critical. Its robust design and wide operating temperature range make it a dependable choice for demanding environments.