• TXS4558: SIM interface

  

  Juan Jacinto Montenegro

  TI Thinks Resolved

  Part Number: TXS4558 Tool/software: I need documentation about recommendations for the layout of tracks on PCI for SIM signals, as well as track length, impedance value, track spacing and others.

  • 2 months ago
  • Logic
  • Logic forum

• RE: TXS02326A: Analog switch device for dual SIM card

  

  Clemens Ladisch

  The TMUX1574 has 2 Ω, which should be enough for < 50 mA. The FSA2567UMX assumes that the SIM power is already regulated to the desired voltage by some other component; the TXS4558 generates the power with LDOs. You can use the TXS4558 if you…

  • 3 months ago
  • Logic
  • Logic forum
Answered

• TXS4558: About VSEL* timing

  

  Tao_2199

  Resolved

  Part Number: TXS4558 Hello, Regarding to VSEL2 timing on TXS4558, my customer is asking some question. In their application, VSEL2 is high during VCC is power up. In this case, VSIM is output 2.95V correctly. (Please refer bellow diabrames.) (Question…

  • Resolved

  • over 5 years ago
  • Logic
  • Logic forum

• TXS4558: About VSIM* Start-up time(TSTR)

  

  Tao_2199

  TI Thinks Resolved

  Part Number: TXS4558 Hello, Regarding to VSIM* Start-up time(TSTR) on TXS4558, my customer is asking a question. (Question) ･Which is start point of TSTR ? Is it CSELsignal edge point? or VSEL* signal edge point? Or is it from a point(ex.10%) to a point…

  • over 5 years ago
  • Logic
  • Logic forum

• TXS4558: Schematic review

  

  Shu-Cheng LIN

  TI Thinks Resolved

  Part Number: TXS4558 Hi Sirs, Sorry to bother you. Could you help check our schematic as below? Any suggestion are welcome. Thanks!! Schematic:

  • over 5 years ago
  • Logic
  • Logic forum
Answered

• TXS4558: About SIM*I/O at deactivation

  

  Tao_2199

  Resolved

  Part Number: TXS4558 Hello, Regarding to SIM*I/O at deactivation on TXS4558, my customer is asking some question. At deactivation(VSIM=1.8V), short pulse (about 1ms) is occurred after SIM*I/O is off. (Please refer attached file.) (Question) (1) is this…

  • Resolved

  • over 5 years ago
  • Logic
  • Logic forum

• TXS4558: About Δt/Δv(Input transition rise or fall rate)

  

  Tao_2199

  TI Thinks Resolved

  Part Number: TXS4558 Hello, Regarding to input transition rise or fall rate on TXS4558 , my customer is asking a question. (Question) When Δt/Δ is more than 5ns/V, is there any impact on this device? It will be about 20ns/V on their application…

  • over 5 years ago
  • Logic
  • Logic forum
Answered

• TXS4558: About VSIM* at Vcc=0 and VIL/VIH on SIM*I/O

  

  Tao_2199

  Resolved

  Part Number: TXS4558 Other Parts Discussed in Thread: TXS0102 Hello, Regarding to VSIM* and SIM*I/O on TXS4558, my customer is asking some question. (Question) 1)When EN*=H and Vcc=0, is VISM* off? 2) Do you have a data of VIL/VIH in SIM*I/O? Regards…

  • Resolved

  • over 5 years ago
  • Logic
  • Logic forum

• TXS4558: About VCC and VBATT

  

  Tao_2199

  TI Thinks Resolved

  Part Number: TXS4558 Hello, Regarding to TXS4558, my customer is asking some question. (Question) (1)For power up, is power sequence is needed? Or don’t we need to care power procedure ? (VCC and VBATT) (2)VBATT is always input to power source…

  • over 6 years ago
  • Logic
  • Logic forum
Answered

• TXS4558: Is there a possibility of damage of controll pin when power is off

  

  Shinichi Inoue

  Resolved

  Part Number: TXS4558 Dear Specislists, My customer is considering TXS4558 and has questions. I would be grateful if you could advise. --- 1. What is the device internal input protection circuit for each control pin (EN1 / 2, VSEL1 / 2, CLKRUN1 / 2, CSEL…

  • Resolved

  • over 5 years ago
  • Logic
  • Logic forum

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