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Technology family LS Number of channels 4 IOL (max) (mA) 24 Supply current (max) (µA) 22000 IOH (max) (mA) -2.6 Input type Bipolar Output type 3-State Features High speed (tpd 10-50ns), Input clamp diode Rating Catalog Operating temperature range (°C) 0 to 70
Technology family LS Number of channels 4 IOL (max) (mA) 24 Supply current (max) (µA) 22000 IOH (max) (mA) -2.6 Input type Bipolar Output type 3-State Features High speed (tpd 10-50ns), Input clamp diode Rating Catalog Operating temperature range (°C) 0 to 70
SOIC (D) 14 51.9 mm² (8.65 mm × 6 mm) SSOP (DB) 14 48.36 mm² (6.2 mm × 7.8 mm) SOP (NS) 14 79.56 mm² (10.2 mm × 7.8 mm) PDIP (N) 14 181.42 mm² (19.3 mm × 9.4 mm)
  • Quad Bus Buffers
  • 3-State Outputs
  • Separate Control for Each Channel

The SN54125, SN54126, SN74125, SN74126, and SN54LS126A are obsolete and are no longer supplied.

  • Quad Bus Buffers
  • 3-State Outputs
  • Separate Control for Each Channel

The SN54125, SN54126, SN74125, SN74126, and SN54LS126A are obsolete and are no longer supplied.

These bus buffers feature three-state outputs that, when enabled, have the low impedance characteristics of a TTL output with additional drive capability at high logic levels to permit driving heavily loaded bus lines without external pullup resistors. When disabled, both output transistors are turned off, presenting a high-impedance state to the bus so the output will act neither as a significant load nor as a driver. The ’125 and ’LS125A devices’ outputs are disabled when G\ is high. The ’126 and ’LS126A devices’ outputs are disabled when G is low.

These bus buffers feature three-state outputs that, when enabled, have the low impedance characteristics of a TTL output with additional drive capability at high logic levels to permit driving heavily loaded bus lines without external pullup resistors. When disabled, both output transistors are turned off, presenting a high-impedance state to the bus so the output will act neither as a significant load nor as a driver. The ’125 and ’LS125A devices’ outputs are disabled when G\ is high. The ’126 and ’LS126A devices’ outputs are disabled when G is low.

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* 数据表 Quadruple Bus Buffers With 3-State Outputs 数据表 (Rev. A) 2002-2-6

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