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Hutton Close, Crowther Ind Est, Washington, Tyne & Wear NE38 0AH, England
Email: enquiry@isocomoptocouplers.com
- Tel: +44 (0)191 4166546 - Fax: +44 (0)191 4155055
Circuit
Features
Description
Absolute Maximum Ratings
Dimensions
Similar Optocouplers
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1 Form A Normally Open
PhotoMOS Relay and Optocoupler in one package
Package Single 8 Pin DIP
I/O
Isolation 3750 Vrms
Surface Mount Option
Optocoupler Bidirectional
Current Detection
MOS Relay:
Typical Ron 20 ohm
Load Voltage 350 V
Load
Current 130 mA
High Surge Capability
Linear AC/DC Operation
Clean
Bounce Free Switching
Low Power Consumption
High Reliability Monolithic
Receptor
The IST450 Telecom switch consists of an optically coupled PhotoMos Relay
and a bidirectional input optocoupler. The relay is ideal for performing
switchhook and dial-pulse switching while the optocoupler performs
ring-detection and loop current sensing functions. Both the Relay and
Optocoupler provide 3750 Vrms of input to output isolation.
The Relay uses
high voltage DMOS technology, and features low ON-resistance, high breakdown
voltage that protects the relay from telephone line induced lightning surges.
The
optocoupler provides bidirectional current sensing via two antiparallel GaAs
infrared emitting diodes. The opto channel provides a minimum CTR of 30% at ±1
mA.
Part Name: 'A' signifies Surface Mount
Telecommuncations - Telecom Switching; Tip/Ring Circuits; Modem Switching (Laptop, Notebook, Pocket Size); Hookswitch; Dial Pulsing; Ground Start; Ringer Injection; Loop Detect; Ring Detect
Absolute Maximum Ratings (Ta=25°C) | |
| Isolation Test Voltage: Isolation Resistance: Storage Temperature: Operating Temperature: Junction Temperature: Lead Soldering: Load Type: |
3750 Vrms >= 10 Gohm (Vio=500V,Ta=25°C) -40°C to +150°C -40°C to +85°C 100°C 260°C for 10s, 2mm from case AC/DC |
| MOS Relay | Detector | |
|---|---|---|
Input Emitter |
||
| Reverse Voltage: Operation Input Current: Continuous Forward Current: Peak Forward Current (1s): Recovery Input Current: Forward Voltage: Power Dissipation: Derate Linearly above 25°C: |
5.0V 5mA 5mA-50mA 1A 0.2mA 2.0V 100mW 1.3mW/°C |
- ±6mA ±50mA ±1A ±5µA 1.2V 75mW |
Output Detector |
||
| Output Breakdown Voltage: Continuous Load Current: Surge Load Current: Off-State Leakage Current, Max: Output Terminal Capacitance On-Resistance: Power Dissipation: |
400V ±130mA 300mA 1µA 6pF 20 ohm (Typ) 30 ohm (Max) 500mW |
60Vdc - - 0.3µA - 150mW |
Characteristics |
||
| Turn-on Time: Turn-off Time: Total Power Dissipation: Derate linearly from 25°C |
0.8ms (Typ) 1.5ms (Max) 0.3ms (Typ) 1ms (Max) 550mW 2.5mW/°C |
5µs (Typ) 20µs (Max) 4µs (Typ) 20µs (Max) 200mW |
Units: mm; Tolerance: ±0.1 mm
| Package | DIL | SMD |
|---|---|---|
| b | 6.5 | |
| c | 13 degrees | |
| d | 2.54 | |
| f | +3.4 | |
| g | -1.475 | |
| h | 3.5 | |
| k | 0.5 | 1.22 |
| l | 9.68 | |
| s | 7.62 | 8.39 |
| t | 1.4 | |
| v | 1.875 | |
| w | 11.9 | |
| x | 0.254±0.05 | |
End Pin Tip Midpoint to End Face Profile Edge - SMD: 1.03
Thickness at s
Measurement Endpoints - SMD: 0.86
Isocom takes great effort to ensure accurate data, but regrettably cannot be held liable for any error on its website. Visit File Lists to confirm old printouts are up-to-date.