ACPL-K370, ACPL-K376 Isolated Voltage/Current Detector Data Sheet Description Features The ACPL-K370 and ACPL-K376 are voltage/current 5% voltage detection accuracy threshold detection optocouplers. The ACPL-K376 is a low- Wide AC or DC detection range: up to 1140 Vpeak current version of the ACPL-K370. To obtain lower current User configurable single/dual detection levels operation, the ACPL-K376 uses a high-efficiency AlGaAs LED which has higher light output at lower drive currents. Built-in hysteresis improves noise immunity Both devices have a threshold sensing input buffer IC Very low threshold current: 1.32 mA (ACPL-K376) that allows threshold levels to be set by a single external Logic compatible output resistor over a wide range of input voltages. Wide output supply voltage: 2 V to 18 V The input buffer has several performance enhancing 40C to +105C operating temperature range features: hysteresis for extra noise immunity and switching immunity, a diode bridge for easy use with AC SSO-8 package with 8 mm creepage and clearance input signals, and internal clamping diodes to protect the Safety and regulatory approval: buffer and LED from over-voltage and over-current tran- IEC/EN/DIN EN 60747-5-5: 1140 Vpeak working sients. Because threshold sensing is done prior to driving insulation voltage the LED, variations in optical coupling from the LED to the UL 1577: 5000 Vrms/1minute double protection detector will not effect the threshold levels. rating The ACPL-K370 input buffer IC has a nominal turn-on CSA: Component Acceptance Notice 5 threshold of 3.8 V(V ) and 2.77 mA (I ). The buffer TH+ TH+ IC for the ACPL-K376 is designed for lower input current. Applications The nominal turn-on threshold for the ACPL-K376 is 3.8 V Limit switch sensing (V ) and 1.32 mA (I ), which reduces power dissipa- TH+ TH+ tion by 52%. Low voltage detector AC mains and DC-link voltage detection The high-gain output stage features an open-collector output for both TTL compatible saturation voltages and Relay contact monitor CMOS compatible breakdown voltages. Relay coil voltage monitor By combining many unique functions in a single package, the Current sensing ACPL-K370 and ACPL-K376 are ideal components for indus- Microprocessor interfacing trial control computer input boards and other applications where a predetermined input threshold level is needed. Telephone ring detection Functional Diagram Connection Diagram ISOLATION BARRIER I CC AC1 1 8 V CC D2 R X D1 DC+ 2 7 NC AC/DC CONTROLLER POWER D3 D4 I O TRUTH TABLE DC 3 6 V O (POSITIVE LOGIC) INPUT OUTPUT ACPL-K370 AC2 4 5 GND H L ACPL-K376 L H GND1 GND2 Figure 1. Functional Diagram Figure 2. Connection DiagramTable 1. Ordering Information The ACPL-K370 and ACPL-K376 are UL recognized with 5000 Vrms for 1 minute per UL1577. Option IEC/EN/ RoHS Tape DIN EN Part number Compliant Package Surface Mount & Reel 60747-5-2 Quantity -000E X 80 per tube XX -060E 80 per tube ACPL-K370 Stretched ACPL-K376 SO-8 XX -500E 1000 per reel XXX -560E 1000 per reel To form a complete ordering part number, choose a part number from the part number column and combine it with the desired option from the option column. Example 1: ACPL-K370-560E orders an RoHS compliant part with an IEC/EN/DIN EN 60747-5-5 certification and Tape & Reel packaging. Package Outline Drawings Stretched SO-8 Package (SSO-8) RECOMMENDED LAND PATTERN 5.850 0.50 (0.230 0.010) PART NUMBER DATE CODE 8 7 6 5 12.650 (0.5) K370 1 Z = OPTION CODE 6.807 0.127 Z (0.268 0.005) RoHS-COMPLIANCE YYWW INDICATOR 1.905 (0.1) 1 2 3 4 1.590 0.127 (0.063 0.005) 7 45 0.450 (0.018) 3.180 0.127 (0.125 0.005) 0.750 0.250 0.200 0.100 0.381 0.130 (0.0295 0.010) (0.008 0.004) (0.015 0.005) 11.50 0.250 1.270 (0.453 0.010) (0.050) BSG Dimensions in millimeters and (inches). Note 1. V = Options comprise 060 other options are not marked. Lead coplanarity = 0.1 mm (0.004 inches). Figure 3. 2