Si838x Data Sheet
Bipolar Digital Field Inputs for PLCs and Industrial I/O Modules
The Si838x provides eight input channels ideal for 24 V digital logic commonly used for industrial applications. These channels can either sink or source current and feature integrated safety rated isolation. In combination with a few external components, this provides compliance to IEC 61131-2 switch types 1, 2, or 3. The input interface is based on Silicon Labs' ground-breaking CMOS based LED emulator technology which enables the bipolar capability (sinking or sourcing inputs) with no VDD required on the field side. The output interface from the Si838x device allows for low power operation with 2.25 V compliance. These products utilize Silicon Labs' proprietary CMOS-based isolation technology, supporting up to 2.5 kVRMS withstand voltage. This technology enables high CMTI (up to 300 kV/μs), lower propagation delays and channel skew, reduced variation with temperature and age, and tighter part-to-part matching. The Si838x offers longer service life and dramatically higher reliability compared to opto-coupled input solutions.
Product options include parallel or serialized outputs. Parallel outputs can be purchased with built-in, low-pass filters for improved noise immunity, reduced design complexity and cost. Cascading a total of 128 channels (16x Si838x) with a single MCU interface is possible with the Si8380S serial output option. The Si8380S also unlocks the ability to configure each channel with unique filtering behavior.
Applications: • Programmable logic controllers • Industrial data acquisition • Distributed control systems • CNC machines • I/O modules • Motion control systems
Safety Regulatory Approvals: • UL 1577 recognized
• Up to 2500 VRMS for one minute • CSA component notice 5A approval
• IEC 60950-1 • IEC 62368-1 • VDE certification conformity • VDE 0884-10 • CQC certification approval • GB4943.1
KEY FEATURES
• Bipolar digital interface with 24 V sinking or sourcing inputs
• Eight total inputs in one package • High data rates of up to 2 Mbps • Safety rated integrated isolation of 2.5
kVRMS • Low input current of 1 mA typ • No VDD required on field side • High electromagnetic immunity • Selectable debounce filter times of up to
100 ms • Configurable debounce filter modes
available with SPI interface option • Transient immunity up to 300 kV/μs • Flow-through output configuration with
eight outputs • Option for SPI interface with daisy-chain
capability • Wide 2.25 to 5.5 V VDD operation • Wide operating temperature range
• –40 to +125 °C • Compliant to IEC 61131-2
• Type 1, 2, 3 • RoHS-compliant packages
• QSOP-20
Isolation Barrier Isolation Barrier
A1 1 e A2 2 e A3 3 e A4 4 e COM 5
COM 6
A5 7 e A6 8 e A7 9 e A8 10 e
Si8380P
20 B1 19 B2 18 B3 17 B4 16 VDD 15 GND 14 B5 13 B6 12 B7 11 B8
A1 1 e A2 2 e A3 3 e A4 4 e COM 5
COM 6
A5 7 e A6 8 e A7 9 e A8 10 e
Si8380S
SPI
20 MISO 19 MOSI 18 NSS 17 SCLK 16 VDD 15 GND 14 MOSI_THRU 13 NC 12 NC 11 NC
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 •
[email protected] • www.skyworksinc.com
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Rev. 1.0 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 26, 2021
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Si838x Data Sheet • Ordering Guide
1. Ordering Guide
Table 1.1. Si838x Ordering Guide
Ordering Part Number
Output Interface
Number of HighSpeed Channels
Low-Pass Debounce Filter
Delay1, 2
Package Type3
Isolation Rating
Si8380S-IU
Serial
0
0 ms
20-QSOP
2.5 kVRMS
Si8380P-IU
Parallel
0
0 ms
20-QSOP
2.5 kVRMS
Si8382P-IU
Parallel
2
0 ms
20-QSOP
2.5 kVRMS
Si8384P-IU
Parallel
4
0 ms
20-QSOP
2.5 kVRMS
Si8388P-IU
Parallel
8
0 ms
20-QSOP
2.5 kVRMS
Si8380PF-IU
Parallel
0
10 ms
20-QSOP
2.5 kVRMS
Si8382PF-IU
Parallel
2
10 ms
20-QSOP
2.5 kVRMS
Si8384PF-IU
Parallel
4
10 ms
20-QSOP
2.5 kVRMS
Si8380PM-IU
Parallel
0
30 ms
20-QSOP
2.5 kVRMS
Si8382PM-IU
Parallel
2
30 ms
20-QSOP
2.5 kVRMS
Si8384PM-IU
Parallel
4
30 ms
20-QSOP
2.5 kVRMS
Si8380PS-IU
Parallel
0
100 ms
20-QSOP
2.5 kVRMS
Si8382PS-IU
Parallel
2
100 ms
20-QSOP
2.5 kVRMS
Si8384PS-IU
Parallel
4
100 ms
20-QSOP
2.5 kVRMS
Note: 1. Low-pass debounce filter delay applies to low-speed channels only. 2. All low-speed channels have a built-in 4 µs low-pass debounce filter delay, in addition to the low-pass filter delay listed in this table. See 3.6 Debounce Filter for details of the low-pass debounce filter operation. 3. All packages are RoHS-compliant with peak reflow temperatures of 260 °C according to the JEDEC industry standard classifications and peak solder temperatures. 4. Additional filter and channel configurations available upon request. Contact Silicon Labs for more information. 5. “Si” and “SI” are used interchangeably. 6. An "R" at the end of the Ordering Part Number indicates tape and ree.