The PS9123 is an optically coupled high-speed, totem pole output isolator containing a GaAlAs LED on the input side and a photodiode and a signal processing circuit on the output side on one chip. The PS9123 is specified high CMR, high CTR and pulse width distortion with operating temperature.


  • High common mode transient immunity (CMH, CML = ±20 kV/μs TYP.)
  • Small package (SO-5)
  • Pulse width distortion (⏐tPHL − tPLH⏐ = 4 ns TYP.)
  • High-speed (15 Mbps)
  • High isolation voltage (BV = 3 750 Vr.m.s.)
  • Totem pole output
  • Embossed tape product : PS9123-F3 : 2 500 pcs/reel
  • Pb-Free product
  • Safety standards UL approved: File No. E72422 CSA approved: No. CA 101391 (CA5A, CAN/CSA-C22.2 60065, 60950) DIN EN60747-5-5 (VDE0884-5): 2011-11 approved No. 40008902 (Option)

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Part Number PLP Part Status Pkg. Type Carrier Type Buy Sample
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2028 Jul Active
2024 Jul Active
2028 Jul Active


Title language Type Format File Size Date
Datasheets & Errata
star PS9123 Data Sheet 日本語 Datasheet PDF 160 KB
Application Notes & White Papers
Photocouplers Applications Note Application Note PDF 957 KB
Industrial Automation Brochure 日本語, 简体中文 Brochure PDF 7.93 MB
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB
Photocouplers Brochure 日本語 Brochure PDF 4.39 MB
Photocouplers Selection Guide 日本語 Brochure PDF 4.34 MB