SCLT3-8BT8 STMicroelectronics, SCLT3-8BT8 Datasheet - Page 28

• Manufacturer Part Number: SCLT3-8BT8
• Description: IC SERIAL TERM 8-LINE 38HTSSOP
• Manufacturer: STMicroelectronics
• Type: Serialr

Specifications of SCLT3-8BT8

• Number Of Terminations: 8
• Voltage - Supply: 9 V ~ 35 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-TSSOP Exposed Pad, 38-eTSSOP, 38-HTSSOP
• Number Of I/os: 8
• Operating Supply Voltage: 9 V to 35 V
• Supply Current (max): 2.3 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Mounting Style: SMD/SMT
• Data Bus Width: 8 bit, 16 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10100-5

Application considerations
3.7
3.8
28/33
Figure 21. Power supply connection versus IEC 61131-2 norm levels (left) and
Input operation for the device-net applications
If the sensor connected to the SCLT input has a drop voltage less than 1 V, this input runs
with an on-state threshold equal to 10 V. Reducing the input resistance R
SCLT input meets such an operation.
Dissipation calculation in the SCLT3-8 circuit
Table 12.
1. Its thermal resistance is less than : 90 °C/W corresponding to ΔT = 150 - 85 = 65 °C, P
Figure 22. Relative variation of junction-to-ambient thermal resistance R
V Regulator
Current limiter
Quiescent current
V
V
CC
CC
Circuit
device-net norm levels (right)
Evaluation of dissipation in the SCLT3-8
versus printed circuit board copper surface S
R
R
R
R
R
R
C
C
S
S
PD
PD
120
100
80
60
40
20
V
V
0
Count
V
V
CS
CS
0
C
C
1
8
1
20
30 - 500 x 0.007 - 5 = 21.5
30 - 2200 x 0.0026 = 24.3
30 - 500 x 0.0018 = 29.1
Doc ID 15191 Rev 3
SCLT3 -8
SCLT3 -8
40
5V.REG
5V.REG
5V.REG
Printed circuit board, FR4 epoxy
single layer, copper thickness = 35 µm
UVA
UVA
UVA
60
Drop voltage (V)
80
S
CU
(mm²)
100
V
V
CC
CC
120
D
D
(1)
Z
Z
= SMAJ30A
= SMAJ30A
with R
R
R
R
R
R
R
D
D
140
C
C
S
S
PD
PD
Z
Z
CU
V
V
160
C
V
V
CS
CS
C
C
= 500 Ω and I
180
Current
D
IN
(mA)
< 2.6
= 708 mW.
1.8
SCLT3 -8
SCLT3 -8
= 1.8 kΩ, the
7
Total
SCLT3-8BT8
5V.REG
5V.REG
5V.REG
TH_JA
UVA
UVA
UVA
DD
Losses
= 7 mA
(mW)
150
505
708
53