CLT3-4B digital termination Datasheet

CLT3-4B Datasheet, PDF, Equivalent


Part Number

CLT3-4B

Description

Current limited over-voltage protected quad digital termination

Manufacture

STMicroelectronics

Total Page 13 Pages
Datasheet
Download CLT3-4B Datasheet


CLT3-4B
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. This common pad COM is enlarged to
reduce the thermal resistance and improve the device
cooling. The COM and IN pins are designed to
minimize the EMI effects on the circuit.
November 2007
Rev 5
1/13
www.st.com

CLT3-4B
Characteristics
1 Characteristics
CLT3-4B
Figure 2. Functional block diagram
IN1
ESD
OVER
VOLTAGE
PROTECTION
I1
0.75xILIM
0.25xILIM
CURRENT LIMITER ILIM
OPTO COUPLER DRIVER
I1
1.5mA
ESD12
ESD
OVER
VOLTAGE
PROTECTION
IN2
Vc
ESD
Volt Prot
ESDC
IN3
ESD
OVER
VOLTAGE
PROTECTION
ESD34
ESD
OVER
VOLTAGE
PROTECTION
IN4
CURRENT LIMITER ILIM
0.25xILIM
0.75xILIM
I2
1.5mA
I2
OPTO COUPLER DRIVER
BIASING
CIRCUIT
TO COMPARATORS
I3
0.75xILIM
0.25xILIM
CURRENT LIMITER ILIM
OPTO COUPLER DRIVER
I3
1.5mA
CURRENT LIMITER ILIM
0.25xILIM
0.75xILIM
I4
1.5mA
I4
OPTO COUPLER DRIVER
OUT1
COM12
OUT2
COM
OUT3
COM34
OUT4
Table 1. Absolute ratings (limiting values)
Symbol
Parameter
Supply steady state voltage, RC = 0 kΩ
VCC VC Supply steady state voltage, RC = 4.7 kΩ
Input steady state voltage, RI = 0 kΩ
VI (1)
Input steady state voltage, RI = 1.2 kΩ
IN Input repetitive pulse voltage, RI = 1.2 kΩ
Input repetitive pulse voltage,
RI = 1.8 kΩ, RC = 4.7 kΩ (2)
Input maximum forward current,
RI = 1.2 kΩ, RC = 4.7 kΩ
IIN
IN
Input maximum reverse current,
RI = 1.8 kΩ, RC = 4.7 kΩ (2)
VOM OUT Maximum output steady state voltage
IOM OUT Output current
TAMB
TJ
Operating ambient temperature
AII
Operating and storage junction temperature
1. VI = VIN + RI x IIN; VIN = voltage at the input pin itself
2. According to test diagram and design recommendations described in Section 2.2.
Value
- 0.3 to 30
- 30 to 30
- 0.3 to 30
- 0.3 to 32
- 0.3 to 35
Unit
V
V
V
V
V
- 30 to 30
V
5 mA
20 mA
2.5
- 4 to 4
- 25 to 85
- 25 to 150
V
mA
°C
°C
2/13


Features CLT3-4B Current limited over-voltage pro tected quad digital termination Featur es ■ 4 channel topology ■ Wide rang e input dc Voltage: – VI= - 0.3 to 30 V with RI = 0 – VI = - 30 to 30 V wi th RI = 1.8 kΩ – Low side configurat ion with common ground ■ Current limi ter: – IGEN = 3 mA – Input current limiter activation voltage < 5 V – Te mperature compensated operation ■ Opt o-coupler drive: – No coupler activat ion below 1.5 mA input current ■ Inpu t protection (RI = 1.2 kΩ): – IEC 61 000-4-2 electrostatic discharge ESD, Cl ass 3 In contact, ± 6 kV; in air, ± 8 kV Level B: temporary disruption; no c hange of opto-coupler state – IEC 610 00-4-5 voltage surge, Class 3 ± 1000 V with 42 Ω serial resistor in differen tial mode Level B: temporary disruption – IEC 61000-4-4 transient burst immu nity ± 4 kV peak voltage; 5 kHz repeti tive rate Level A: fully functional ■ Operating ambient temperature: - 25 to 85° C Benefits ■ Reduced overall dissipation ■ Compact with high integration ■ Enables input to meet .
Keywords CLT3-4B, datasheet, pdf, STMicroelectronics, Current, limited, over-voltage, protected, quad, digital, termination, LT3-4B, T3-4B, 3-4B, CLT3-4, CLT3-, CLT3, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)