TIL922
TIL922 Quad-Channel Optocoupler Technical Summary
Overview
The TIL922 is a high-performance quad-channel optocoupler designed for AC-input applications. This device features four independent channels, each consisting of two gallium-arsenide (GaAs) light-emitting diodes (LEDs) connected in reverse-parallel configuration and a silicon NPN phototransistor. Packaged in a 16-pin DIP (Dual In-line Package), the TIL922 provides excellent electrical isolation between input and output circuits while enabling signal transmission across different voltage domains.
As part of the TIL92x series, which includes single-channel (TIL920) and dual-channel (TIL921) variants, the TIL922 offers the highest channel density in the family. The device is available in standard and selected current-transfer ratio (CTR) grades, with the standard version tested for 20% minimum CTR and special versions offering 50% and 100% minimum CTR.
Key Features
- Quad-channel configuration - Four independent optocoupler channels in a single package
- AC input capability - Reverse-parallel GaAs LEDs enable direct AC signal coupling
- High isolation voltage - 2500Vrms minimum input-to-output isolation
- Multiple CTR options - Available in 20%, 50%, and 100% minimum current-transfer ratio grades
- Wide operating temperature range - -55°C to +100°C for harsh environments
- Fast response time - Typical switching times under 10μs
- Compact 16-pin DIP package - Space-efficient through-hole mounting
- Reliable performance - Tested for long-term stability and durability
Applications
The TIL922 finds use in numerous applications requiring electrical isolation and signal transmission:
Industrial Control Systems
- PLC input/output isolation
- Motor control feedback circuits
- Industrial sensor interfaces
Power Electronics
- AC line voltage monitoring
- Switch-mode power supply feedback
- Inverter control circuits
Telecommunications
- Line interface circuits
- Modem isolation
- Telephone equipment
Medical Equipment
- Patient monitoring systems
- Isolated data acquisition
- Medical diagnostic equipment
Electrical Characteristics
Absolute Maximum Ratings
- Input LED current (continuous): 60mA
- Input LED current (pulse): 1A (100μs pulse width)
- Reverse voltage (LED): 3V
- Collector-emitter voltage: 30V
- Emitter-collector voltage: 7V
- Collector current: 50mA
- Total power dissipation: 250mW per channel
- Isolation voltage: 2500Vrms
- Operating temperature range: -55°C to +100°C
- Storage temperature range: -55°C to +125°C
Typical Electrical Characteristics (TA = 25°C unless otherwise noted)
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input forward voltage (IF = 10mA) | VF | - | 1.15 | 1.5 | V |
| Input reverse breakdown voltage | VBR | 3 | - | - | V |
| Current transfer ratio (IF = 10mA, VCE = 5V) | CTR | 20 | - | - | % |
| Dark current (VCE = 10V) | ID | - | 10 | 100 | nA |
| Collector-emitter saturation voltage (IF = 10mA, IC = 2mA) | VCE(sat) | - | 0.2 | 0.4 | V |
| Rise time (IF = 10mA, RL = 100Ω, VCC = 5V) | tr | - | 3 | 8 | μs |
| Fall time (same conditions) | tf | - | 4 | 10 | μs |
Package Information
16-Pin DIP Mechanical Specifications
- Package type: Plastic dual in-line package (DIP)
- Pin count: 16
- Lead pitch: 2.54mm (0.1 inch)
- Body width: 7.62mm (0.3 inch)
- Body length: 19.05mm (0.75 inch)
- Lead length: 3.3mm (0.13 inch) minimum
- Lead diameter: 0.46mm (0.018 inch)
- Package material: Molded plastic, UL94 V-0 flammability rating
Pin Configuration
The TIL922 16-pin DIP package has the following pinout:
- Pin 1: Channel 1 LED anode
- Pin 2: Channel 1 LED cathode
- Pin 3: Channel 2 LED anode
- Pin 4: Channel 2 LED cathode
- Pin 5: Channel 3 LED anode
- Pin 6: Channel 3 LED cathode
- Pin 7: Channel 4 LED anode
- Pin 8: Channel 4 LED cathode
