홈 로직 및 전압 변환 버퍼, 드라이버 및 트랜시버 비인버팅 버퍼 및 드라이버
홈
로직 및 전압 변환
버퍼, 드라이버 및 트랜시버
비인버팅 버퍼 및 드라이버

SN54LVTH244A

활성

버스 홀드, TTL 호환 CMOS 입력 및 3상태 출력을 지원하는 군사용 8채널, 2.7V~3.6V 버퍼

지금 주문하기
데이터 시트

SN54LVTH244A

활성
데이터 시트 지금 주문하기

제품 상세 정보

Technology family LVT Number of channels 8 IOL (max) (mA) 48 Supply current (max) (µA) 5000 IOH (max) (mA) -24 Input type TTL-Compatible CMOS Output type 3-State Features Bus-hold, Over-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Ultra high speed (tpd <5ns) Rating Military Operating temperature range (°C) -55 to 125
Technology family LVT Number of channels 8 IOL (max) (mA) 48 Supply current (max) (µA) 5000 IOH (max) (mA) -24 Input type TTL-Compatible CMOS Output type 3-State Features Bus-hold, Over-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Ultra high speed (tpd <5ns) Rating Military Operating temperature range (°C) -55 to 125
CFP (W) 20 90.5828 mm² (— mm × — mm) CDIP (J) 20 167.464 mm² (— mm × — mm) LCCC (FK) 20 79.0321 mm² (— mm × — mm)
  • Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA = 25°C
  • Support Unregulated Battery Operation Down to 2.7 V
  • Ioff and Power-Up 3-State Support Hot Insertion
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Latch-Up Performance Exceeds 500 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
  • Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA = 25°C
  • Support Unregulated Battery Operation Down to 2.7 V
  • Ioff and Power-Up 3-State Support Hot Insertion
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Latch-Up Performance Exceeds 500 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

These octal buffers and line drivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.

The ’LVTH244A devices are organized as two 4-bit line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the devices pass data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, 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.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

These devices are 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 devices when they are 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.

These octal buffers and line drivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.

The ’LVTH244A devices are organized as two 4-bit line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the devices pass data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, 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.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

These devices are 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 devices when they are 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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기술 자료

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* 데이터 시트 SN54LVTH244A, SN74LVTH244A datasheet (Rev. J) 2003. 10. 8
* SMD SN54LVTH244A SMD 5962-95844 2016. 6. 21

설계 및 개발

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패키지 핀 CAD 기호, 풋프린트 및 3D 모델
CFP (W) 20 Ultra Librarian
CDIP (J) 20 Ultra Librarian
LCCC (FK) 20 Ultra Librarian
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