CLT3-4BT6-TR STMicroelectronics, CLT3-4BT6-TR Datasheet - Page 5

TERMINATION QUAD DGTL TSSOP-20

CLT3-4BT6-TR

Manufacturer Part Number
CLT3-4BT6-TR
Description
TERMINATION QUAD DGTL TSSOP-20
Manufacturer
STMicroelectronics
Type
Digital Terminationr
Datasheet

Specifications of CLT3-4BT6-TR

Technology
Mixed Technology
Number Of Circuits
4
Applications
General Purpose
Package / Case
20-TSSOP
Diode Type
ESD Protection
Clamping Voltage Vc Max
38V
Operating Voltage
10V
Diode Case Style
TSSOP
No. Of Pins
20
Operating Supply Voltage
10 V
Supply Current
0.0008 A
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 25 C
Mounting Style
SMD/SMT
For Use With
497-6401 - BOARD EVAL FOR CLT3-4
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
Voltage - Working
-
Voltage - Clamping
-
Lead Free Status / Rohs Status
 Details
Other names
497-2455-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CLT3-4BT6-TR
Manufacturer:
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Part Number:
CLT3-4BT6-TR
Manufacturer:
ST
Quantity:
20 000
CLT3-4B
1.2
The current limiting circuit connected between the input and the output pins is compensated
all over the temperature range. Thanks to its low tolerance, the current limitation allows
reducing drastically the dissipation of the input compared to a resistive input: the overall
module requires less cooling capability and becomes smaller.
The output block of each termination channel controls the operation of an opto-coupler that
is enabled by a Light Emitting Diode.
When the input current is less than 1.5 mA, this output circuit derivates the input current to
maintain the opto-coupler off.
The original structure of the CLT limiter allows its activation threshold to be low and
insensitive to the output voltage up to a maximum value of 2.0 V.
When the CLT input voltage V
than 11 V and a series resistor R
current (3/4) is higher than 1.5 mA. The whole termination channel including the opto-
coupler is on.
Depending on the input type operation that is described by the IEC 61131-2 standard, the
input resistance R
This document describes operation and characteristics for type 3 operation with
V
In type 1 operation the on state threshold V
R
Input characteristics of CLT3-4
Figure 4.
ON MIN
I
is set 2.2 kΩ.
= 11 V and R
30
25
20
15
10
V (V)
5
0
Typical input characteristics of each CLT3-4 channel
IN
0
30
I
5
can be adjusted because of the different on-state threshold V
Off-state
0.5
I
= 1.2 kΩ.
IN
1
is higher than 5 V, or the module input voltage Vi higher
I
= 1.2 kΩ, the output current that is a share of the input
1.5
ON MIN
2
I (mA)
IN
is 12.34 V instead, and the input resistor
On-state
2.5
3
3.5
3.7
Characteristics
4
ON MIN
.
5/13

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