SPRADJ3 July   2024 2N7001T , 2N7001T-Q1 , CD4009UB , CD4009UB-MIL , CD40109B , CD40109B-MIL , CD40109B-Q1 , CD4010B , CD4010B-MIL , CD4010B-Q1 , CD4504B , CD4504B-EP , CD4504B-MIL , LSF0101 , LSF0102 , LSF0102-Q1 , LSF0108 , LSF0108-Q1 , LSF0204 , LSF0204-Q1 , LSF0204D , SN10KHT5541 , SN10KHT5543 , SN10KHT5574 , SN54SC4T125-SEP , SN54SC6T06-SEP , SN54SC6T07-SEP , SN54SC6T14-SEP , SN54SC6T17-SEP , SN54SLC8T245-SEP , SN74ACT1284 , SN74ALVC164245 , SN74ALVC164245-EP , SN74AUP1T04 , SN74AUP1T14 , SN74AUP1T17 , SN74AUP1T34 , SN74AUP1T34-Q1 , SN74AUP1T50 , SN74AVC16T245 , SN74AVC16T245-Q1 , SN74AVC1T45 , SN74AVC20T245 , SN74AVC24T245 , SN74AVC2T244 , SN74AVC2T245 , SN74AVC2T45 , SN74AVC2T45-Q1 , SN74AVC32T245 , SN74AVC4T234 , SN74AVC4T245 , SN74AVC4T245-Q1 , SN74AVC4T774 , SN74AVC6T622 , SN74AVC8T245 , SN74AVC8T245-Q1 , SN74AVCA164245 , SN74AVCA406 , SN74AVCAH164245 , SN74AVCB164245 , SN74AVCB164245-EP , SN74AVCB164245-Q1 , SN74AVCBH164245 , SN74AVCH16T245 , SN74AVCH1T45 , SN74AVCH20T245 , SN74AVCH24T245 , SN74AVCH2T45 , SN74AVCH4T245 , SN74AVCH4T245-EP , SN74AVCH4T245-Q1 , SN74AVCH8T245 , SN74AXC1T45 , SN74AXC1T45-Q1 , SN74AXC2T245 , SN74AXC2T245-Q1 , SN74AXC2T45 , SN74AXC2T45-Q1 , SN74AXC4T245 , SN74AXC4T245-Q1 , SN74AXC4T774 , SN74AXC4T774-Q1 , SN74AXC8T245 , SN74AXC8T245-Q1 , SN74AXCH1T45 , SN74AXCH2T45 , SN74AXCH4T245 , SN74AXCH8T245 , SN74FB1650 , SN74FB1653 , SN74GTL1655 , SN74GTL16612 , SN74GTL16616 , SN74GTL16622A , SN74GTL2003 , SN74GTL2007 , SN74GTL2010 , SN74GTL2014 , SN74GTL2107 , SN74GTL3004 , SN74GTLP1394 , SN74GTLP1395 , SN74GTLP2033 , SN74GTLP21395 , SN74GTLP22033 , SN74GTLP817 , SN74GTLPH1645 , SN74GTLPH1655 , SN74GTLPH16912 , SN74GTLPH16945 , SN74GTLPH306 , SN74LV161284 , SN74LV1T04 , SN74LV1T04-Q1 , SN74LV1T125 , SN74LV1T125-Q1 , SN74LV1T126 , SN74LV1T126-Q1 , SN74LV1T34 , SN74LV1T34-Q1 , SN74LV4T125 , SN74LV4T125-EP , SN74LV4T125-Q1 , SN74LV6T06 , SN74LV6T06-EP , SN74LV6T06-Q1 , SN74LV6T07 , SN74LV6T07-EP , SN74LV6T07-Q1 , SN74LV6T14 , SN74LV6T14-EP , SN74LV6T14-Q1 , SN74LV6T17 , SN74LV6T17-EP , SN74LV6T17-Q1 , SN74LVC161284 , SN74LVC16T245 , SN74LVC16T245-EP , SN74LVC1T45 , SN74LVC1T45-EP , SN74LVC1T45-Q1 , SN74LVC2T45 , SN74LVC2T45-EP , SN74LVC2T45-Q1 , SN74LVC4245A , SN74LVC4245A-EP , SN74LVC8T245 , SN74LVC8T245-EP , SN74LVC8T245-Q1 , SN74LVCC3245A , SN74LVCC3245A-EP , SN74LVCC4245A , SN74LVCC4245A-EP , SN74LVCE161284 , SN74LVCH16T245 , SN74LVCH16T245-EP , SN74LVCH8T245 , SN74LVCZ161284A , SN74LXC1T14 , SN74LXC1T14-Q1 , SN74LXC1T45 , SN74LXC1T45-Q1 , SN74LXC2T45 , SN74LXC2T45-Q1 , SN74LXC8T245 , SN74LXC8T245-Q1 , SN74LXCH1T45 , SN74LXCH8T245 , TWL1200 , TWL1200-Q1 , TXB0101 , TXB0102 , TXB0104 , TXB0104-Q1 , TXB0106 , TXB0106-Q1 , TXB0108 , TXB0302 , TXB0304 , TXH0137D-Q1 , TXS0101 , TXS0102 , TXS0102-Q1 , TXS0104E , TXS0104E-Q1 , TXS0108E , TXS0108E-Q1 , TXS0202 , TXS0206 , TXS0206-29 , TXS0206A , TXS02324 , TXS02326A , TXS02612 , TXS4555 , TXS4558 , TXU0101 , TXU0101-Q1 , TXU0102 , TXU0102-Q1 , TXU0104 , TXU0104-Q1 , TXU0202 , TXU0202-Q1 , TXU0204 , TXU0204-Q1 , TXU0304 , TXU0304-Q1 , TXV0106 , TXV0106-Q1 , TXV0108 , TXV0108-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Device Applicability
    2. 1.2 When to Use or Not Use Auto-Bidirectional Devices
  5. 2Recommendations Specific to TXB, TXS, LSF
    1. 2.1 Before You Begin
      1. 2.1.1 Documentation
    2. 2.2 Power Supplies
      1. 2.2.1 Biasing Requirements
      2. 2.2.2 Decoupling Capacitors
      3. 2.2.3 Power Sequencing
    3. 2.3 Output Enable Pins
    4. 2.4 Input or Output Pins
    5. 2.5 Unused Pins
    6. 2.6 Pull-Ups and Pull-Downs
    7. 2.7 Recommended Translator by Interface
  6. 3Summary
  7. 4References

2.6 Pull-Ups and Pull-Downs

  • TXB and TXS devices are sensitive to external pull-up or pull-down resistors due to the internal pull-up resistors present in the TXS device and the internal serial resistors present in the TXB device.
    • VOL and VOH levels are impacted with external pull-up and pull-down resistors.
    • Pull-up or pull-down resistor greater than 50 kΩ is recommended.
  • LSF family is recommended for auto-bidirectional applications where external pull-up resistors are required. Pull-downs are not recommended as they create a voltage divider network with the pull-ups used.
    • LSF Up translate with pull-ups:
      • Required on the higher voltage side (B-side).
      • Required on the lower voltage side (A-Side) only if outputs are open-drain or with leakage > 1 µA.
    • LSF Down translate with pull-ups:
      • Not required if leakage into the receiver is < 1 µA.
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