OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

CLT01-38S4-TR

P1-P3P4-P6P7-P8
For further information contact your local STMicroelectronics sales office.
April 2013 DocID024384 Rev1 1/8
8
CLT01-38S4
High speed protected digital termination array
Data brief
Features
8-input circuit in common ground low side
topology
Wide range input DC voltage V
I
: -30 V to 35 V
On state threshold: < 11 V with R
I
= 2.2 k
Off state threshold: I
in
> 1.5 mA or V
i
> 5 V
Protected against -30 V reverse polarity
Typical I
LIM
= 2.1 to 2.6 mA adjustable current
limiters
Tight current tolerance including temperature
compensation: ±10%
Serial output with an SPI communication bus
Clock frequency up to 6.25 MHz
C
PHA
= C
POL
= 0 bus master operation
Multi CLT operation in daisy chain connection
16-bit mode: 8 bits for data / 8 bits for control
– Minimum capture time: 4 µs
– Input data rate: 200 kbps/100 kHz
– Minimum propagation transfer time: 7 µs
8-bit mode: 8 bits for data
– Minimum capture time: 2.5 µs
– Input data rate: 400 kbps/200 kHz
– Minimum propagation transfer time: 4 µs
V
CC
= -0.3 to +35 V with R
C
= 2.2 k
Ambient temperature range: -25 to +85°C
Digital inputs for programmable logic controller
and decentralized I/O modules
Benefits
Enables input to meet type 1, 2 and 3
characteristics of IEC 61131-2 standard
Compatible operation with 2 wires proximity
sensor according EN 60947-5-2 standard
Compact board with surface mount integration
and reduced count of isolated couplers
Reduces the count of input-output of the bus
controller circuit
Provides energy-less input LED visual status
Enhanced functional reliability
Built-in over voltage robustness and immune
data transfer
Reduced dissipation: 78 mW max. per channel
Complies with following standards
(R
I
=2.2, R
C
=2.2, C = 33 nF):
Electrostatic discharge, IEC 61000-4-2:
– ±8 kV contact discharge
– ±15 kV air discharge
Electrical transient immunity IEC 61000-4-4
(a)
:
–F
SCK
= 6.25 MHz, ±3 kV
–F
SCK
= 10 kHz, ±4 kV
Voltage surge IEC 61000-4-5
– Input: ±15 kV
– Power supply: ±2.5 kV
Applications
Programmable logic controller and
decentralized input modules
High speed protected termination for digital
input with serialized SPI output
IEC 61131-2 type 1, 2 and 3.
CLT01-38S4
HTSSOP-38
a. With 470 pF grounded on CS and 100 pF grounded on
CLK
www.st.com
Description CLT01-38S4
2/8 DocID024384 Rev1
1 Description
CLT01-38S4 adds to the existing current limiter family. Still focusing on power consumption
savings, the whole series allows each customer to find the right solution.
The CLT01-38S4 is an octal input termination device with a high speed SPI output. Its
maximum input data rate is 400 kbps while the output SPI speed is 6.25 MHz.
As in previous versions, robustness is a key feature of CLT01-38S4. The product is
compliant with surge standards defined in IEC 61000-4-x.
It can run all types of sensor according to IEC 61131-2. Type 1 and 3 with a 2.35 mA limited
current and type 2 using two inputs per sensor with the correct R
REF
.
2 Characteristics
2.1 Simplified block diagram
Figure 1. Simplified block diagram
MOSI
For i = 1 to 8
Current
reference
8 lines
4 lines
8 lines
8 lines
Logic control
Input state register
Data state register
Control state register
Transfer
logic
Power
reset
Power
supply
Parity
bits generator
Over temperature
alarm
Under voltage
alarm
Shift
Write
MISO, /MISO control
Capture
MOSI
Shift
16
-
bit
V
DD
V
DD
V
DD
V
DD
V
C
V
R
V
IN
<V
R
V
CS
SCK
COMP
P
REF
/CS
SPM
MISO
/MISO
V
DD
V
DD
V
DD
IN
1
LD
1
DVR
DocID024384 Rev1 3/8
CLT01-38S4 Characteristics
2.2 Basic application diagram
Figure 2. Basic application diagram
2.3 Input I/O pin descriptions
Figure 3. Pinout description of the HTSSOP-38 version (top view)
O-T
O-T
O-T
8 / 16-bit
State transfer
SPI
Voltage
regulator
CLT01-38S4
Field bus controler
C
PHA
= 0
C
POL
= 0
O-T = opto-transistor
or isolator
8-input
TYPE 1 / 3
CLT
R
I
R
C
R
REF
R
S
UVA
R
PD
SPI
LD
1
LD
8
DVR
MOSI
MISO
/CS
SCK
V
DD
SPM
COM
S
V
C
COM
P
IN
8
REF
V
CS
V
CC
V
I
V
IN
IN
1
SPM
V
C
V
CS
COM
P
IN
1
IN
2
DVR
IN
3
IN
4
COM
P
IN
5
IN
6
IN
7
IN
8
COM
P
V
DD
/CS
SCK
MOSI
NC
COM
S
REF
LD
1
LD
2
LD
3
LD
4
LD
5
LD
6
LD
7
LD
8
SUB
NC
NC
COM
P
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
SUB
32
31
30
29
28
27
26
25
24
23
22
21
20
35
37
36
34
33
38
NC
SPM
V
C
V
CS
COM
P
IN
1
IN
2
DVR
NC
IN
3
IN
4
COM
P
IN
5
IN
6
IN
7
IN
8
COM
P
V
DD
/CS
SCK
MOSI
COM
S
REF
LD
1
LD
2
LD
3
LD
4
LD
5
LD
6
LD
7
LD
8
SUB
NC
NC
COM
P
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
32
31
30
29
28
27
26
25
24
23
22
21
20
35
37
36
34
33
38
NC
SPM
V
C
V
CS
COM
P
IN
1
IN
2
DVR
IN
3
IN
4
COM
P
IN
5
IN
6
IN
7
IN
8
COM
P
V
DD
/CS
SCK
MOSI
MISO
/MISO
COM
S
REF
LD
1
LD
2
LD
3
LD
4
LD
5
LD
6
LD
7
LD
8
SUB
NC
NC
COM
P
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
32
31
30
29
28
27
26
25
24
23
22
21
20
35
37
36
34
33
38
32
31
30
29
28
27
26
25
24
23
22
21
20
35
37
36
34
33
38
NC
P1-P3P4-P6P7-P8

CLT01-38S4-TR

Mfr. #:
Buy CLT01-38S4-TR
Manufacturer:
STMicroelectronics
Description:
Interface - Specialized 8-Input 30V to 35V 6.25Mhz Dig Array
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet