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CLT3-4BT6

STMicroelectronics
Part Number CLT3-4BT6
Manufacturer STMicroelectronics
Description Current limited over-voltage protected quad digital termination
Published Mar 23, 2005
Detailed Description CLT3-4B Current limited over-voltage protected quad digital termination Features ■ 4 channel topology ■ Wide range inpu...
Datasheet PDF File CLT3-4BT6 PDF File

CLT3-4BT6
CLT3-4BT6

Overview
CLT3-4B Current limited over-voltage protected quad digital termination Features ■ 4 channel topology ■ Wide range input dc Voltage: – VI= - 0.
3 to 30 V with RI = 0 – VI = - 30 to 30 V with RI = 1.
8 kΩ – Low side configuration with common ground ■ Current limiter: – IGEN = 3 mA – Input current limiter activation voltage < 5 V – Temperature compensated operation ■ Opto-coupler drive: – No coupler activation below 1.
5 mA input current ■ Input protection (RI = 1.
2 kΩ): – IEC 61000-4-2 electrostatic discharge ESD, Class 3 In contact, ± 6 kV; in air, ± 8 kV Level B: temporary disruption; no change of opto-coupler state – IEC 61000-4-5 voltage surge, Class 3 ± 1000 V with 42 Ω serial resistor in differential mode Level B: temporary disruption – IEC 61000-4-4 transient burst immunity ± 4 kV peak voltage; 5 kHz repetitive rate Level A: fully functional ■ Operating ambient temperature: - 25 to 85° C Benefits ■ Reduced overall dissipation ■ Compact with high integration ■ Enables input to meet type 1 and 3 characteristic of IEC 61131-2 standard ■ Compatible operation with 2 and 3 wires proximity sensor according EN60947-5-2 standard ■ Insensitive to the on state sensor impedance ■ Surface mount package for highly automated assembly ■ Enhanced functional reliability TSSOP20 Applications ■ Industrial automation ■ Programmable logic controller ■ Communication field bus nodes ■ Peripheral input / output modules ■ Machine tool interface Description The CLT3-4 is a quadruple input digital termination device designed for 24 V dc automation applications.
It provides the front-end circuitry of a digital input module (I/O) in industrial automation, and drives an isolating opto-coupler.
Figure 1.
Pin configuration OUT1 OUT2 COM COM34 COM COM COM12 COM OUT3 OUT4 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 IN IN2 ESDC ESD34 COM COM ESD12 VC IN3 IN4 The pins ESD, COMIJ, COM (pins # 1, 3, 6, 8, 10, 11, 13, 15, 16, 18, 20) must be connected together externally.
T...


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