SN74LVCZ245A

アクティブ

オクタル バス トランシーバ、3 ステート出力

製品詳細

Number of channels 8 IOL (max) (mA) 24 IOH (max) (mA) -24 Input type TTL/CMOS Output type LVTTL Features Balanced outputs Technology family LVC Rating Catalog Operating temperature range (°C) -40 to 85
Number of channels 8 IOL (max) (mA) 24 IOH (max) (mA) -24 Input type TTL/CMOS Output type LVTTL Features Balanced outputs Technology family LVC Rating Catalog Operating temperature range (°C) -40 to 85
SOP (NS) 20 98.28 mm² (12.6 mm × 7.8 mm) TSSOP (PW) 20 41.6 mm² (6.5 mm × 6.4 mm) SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm) SSOP (DB) 20 56.16 mm² (7.2 mm × 7.8 mm)
  • Operate From 2.7 V to 3.6 V
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 6.3 ns at 3.3 V
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA= 25°C
  • Typical VOHV (Output VOH Undershoot)
       >2 V at VCC = 3.3 V, TA = 25°C
  • Ioff and Power-Up 3-State Support Hot Insertion
  • Support Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)
  • Latch-Up Performance Exceeds 100mA Per JESC 78, Class II

  • Operate From 2.7 V to 3.6 V
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 6.3 ns at 3.3 V
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA= 25°C
  • Typical VOHV (Output VOH Undershoot)
       >2 V at VCC = 3.3 V, TA = 25°C
  • Ioff and Power-Up 3-State Support Hot Insertion
  • Support Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)
  • Latch-Up Performance Exceeds 100mA Per JESC 78, Class II

This octal bus transceiver is designed for 2.7-V to 3.6-V VCC operation.

The SN74LVCZ245A is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so the buses are effectively isolated.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment.

When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

This octal bus transceiver is designed for 2.7-V to 3.6-V VCC operation.

The SN74LVCZ245A is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so the buses are effectively isolated.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment.

When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

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技術資料

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上位の文書 タイプ タイトル フォーマットオプション 最新の英語版をダウンロード 日付
* データシート SN74LVCZ245A データシート (Rev. G) 2003/08/07

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シミュレーション・モデル

SN74LVCZ245A IBIS Model

SCEM294.ZIP (27 KB) - IBIS モデル
サポート対象の製品とハードウェア
パッケージ ピン数 CAD シンボル、フットプリント、および 3D モデル
SOP (NS) 20 Ultra Librarian
TSSOP (PW) 20 Ultra Librarian
SOIC (DW) 20 Ultra Librarian
SSOP (DB) 20 Ultra Librarian

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