PCLT-2AT4 STMicroelectronics

PCLT-2A Dual current limited overvoltage protected digital termination Datasheet production data Features 2 channel topology: low side input with common ground Wide range input DC voltage: V = - 0.3 to 30 V with R = 0 I I TSSOP14 V = - 30 to 35 V with R = 750 Exposed pad I I Current limiter: 3 to 7.5 mA programmable reference Benefits I = 6.1 mA to 8.8 mA with R = 10 k LIM REF Enable input to meet type1, 2 and 3 I = 2.8 mA to 4.3 mA with R = 22 k LIM REF characteristics of IEC 61131-2 standard Narrow limiter spread: < 17% Compatible operation with 2 and 3 wires Temperature compensated operation proximity sensor according EN60947-5-2 Output drive: standard No output activation below 2 mA input Flexible configuration driving either opto- 1.5 mA minimum output activating current coupler, or CMOS bus controller input, or 12 V in opto-coupler mode AS-Interface network Programmable CMOS output mode option Reduced overall dissipation (V > 2.9 V) MOD Enhanced functional reliability LED drive for sensor status: 4.4 mA typical with Compact with high integration R = 10 k REF Surface mount package for highly automated Input protection (R = 750 C = 22 nF) I IN assembly IEC 61000-4-2 ESD, Level 4 Insensitive to the on-state sensor impedance In contact, 8 kV in air, 15 kV Criteria B: temporary disruption Applications IEC 61000-4-5 voltage surge, Level 3 500 V with 42 series resistor in Type 1, 2 and 3 logic input termination for differential mode industrial automation Criteria B: temporary disruption AS-Interface bus input termination IEC 61000-4-4 transient burst immunity I/O termination in programmable logic 4 kV peak voltage 5 kHz repetitive rate controller Criteria A: fully functional Proximity detector interface IEC 61000-4-6 conducted RFI Decentralized input / output modules 10 V RMS Criteria A: fully functional Input protection against -30 V reverse polarity Ambient temperature: -25 to 85 C March 2012 Doc ID 11821 Rev 2 1/20 This is information on a product in full production. www.st.com 20Contents PCLT-2A Contents 1 Description . 3 2 Characteristics . 3 2.1 IEC61000-4 standard compliance application diagrams 3 2.2 Functional characteristics 9 2.3 Functional description . 11 2.3.1 The VMOD pin 11 2.3.2 OFF state 11 2.3.3 ON state . 12 3 Surge voltage test circuit 13 4 Input reverse polarity robustness . 14 5 Programming of the PCLT-2A according to input type requirement . 15 6 Unisolated AS-Interface bus application diagram 16 6.1 AS-Interface bus application overview . 16 6.2 Isolation of the sensor section and the supply from data/supply bus 16 6.3 Unisolated connection of the PCLT with AS-Interface controller . 17 7 Package information 18 8 Ordering information scheme 19 9 Ordering information . 19 10 Revision history . 19 2/20 Doc ID 11821 Rev 2