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STMicroelectronics Electronic Components Datasheet

PCLT-2A Datasheet

Dual current limited over-voltage protected digital termination

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PCLT-2A
Dual current limited over-voltage protected digital termination
Applications
Type 1, 2 and 3 logic input termination for
www.DataSheet4U.comindustrial automation
AS-Interface bus input termination
I/O termination in programmable logic
controller
Proximity detector interface
Decentralized Input / Output modules
Features
2 channel topology
– Low side input with common ground
Wide range input DC Voltage:
– VI = - 0.3 to 30 V with RI = 0
– VI = - 30 to 35 V with RI = 750
Current limiter:
– 3 to 7.5 mA programmable reference
– ILIM = 6.1 mA to 8.8 mA with RREF = 10 k
– ILIM = 2.8 mA to 4.3 mA with RREF = 22 k
– Narrow limiter spread: < 17 %
– Temperature compensated operation
Output drive:
– No output activation below 2 mA input
current
– 1.5 mA minimum output activating current
in opto-coupler mode
– Programmable CMOS output mode option
(VMOD > 2.9 V)
LED drive for sensor status: 4.4 mA typical with
RREF = 10 k
Input protection (RI = 750 CIN = 22 nF)
IEC61000-4-2 electrostatic discharge ESD,
Level 4
– In contact, ± 8 kV; in air, ± 15 kV
– Criteria B: temporary disruption
November 2005
TSSOP14
Exposed pad
IEC61000-4-5 voltage surge, Level 3
– ± 500 V with 42 series resistor in
differential mode
– Criteria B: temporary disruption
IEC61000-4-4 transient burst immunity
– ± 4 kV peak voltage; 5 kHz repetitive rate
– Criteria A: fully functional
IEC61000-4-6 conducted Radio Frequency
Interference immunity
– 10 VRMS voltage
– Criteria A: fully functional
Input protection against -30 V reverse polarity
Ambient temperature: -25 to 85 °C
Benefits
Enable input to meet type1, 2 and 3
characteristics of IEC61131-2 standard
Compatible operation with 2 & 3 wires
proximity sensor according EN60947-5-2
standard
Flexible configuration driving either opto
coupler, or CMOS bus controller input, or 12 V
AS-interface network
Reduced overall dissipation
Enhanced functional reliability
Compact with high integration
Surface Mount Package for highly automated
assembly
Insensitive to the on state sensor impedance
Rev 1
1/18
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18


STMicroelectronics Electronic Components Datasheet

PCLT-2A Datasheet

Dual current limited over-voltage protected digital termination

No Preview Available !

1 Characteristics
1 Characteristics
PCLT-2A
1.1
www.DataSheet4U.com
IEC61000-4 standard compliance application diagrams
Figure 1. Isolated digital input diagram with opto-coupler driving output
VI VIN
2 wires sensor
IN1
RI CI
VCC
3 wires sensor
RI CI
RC VC
CC RREF
IN2
VC
REF
OUT1
LED1
OUT2
LED2
MOD
Reverse polarity
1N4007
COMP COMS
PCLT -2A
Figure 2. Un-isolated digital input diagram with programmable CMOS output
VI
2 wires sensor
RI
VIN
CI
3 wires sensor
VCC
RI CI
VC
RC CC
RREF
Supply voltage
protection
SM15T39
Reverse polarity
1N4007
PCLT -2A
IN1
IN2
VC
REF
OUT1
LED1
OUT2
LED2
MOD
COMP
COMS
IN1
IN2
BUS
CONTROLLER
VDD
VSS
VDD
GND 5V
SUPPLY
VCC
2/18


Part Number PCLT-2A
Description Dual current limited over-voltage protected digital termination
Maker STMicroelectronics
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PCLT-2A Datasheet PDF






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