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D 型锁存器

SN74ALVCH162373

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具有三态输出的 16 位透明 D 级锁存器

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数据表

SN74ALVCH162373

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产品详情

Number of channels 16 Technology family ALVC Input type Standard CMOS Output type 3-State Clock frequency (max) (MHz) 150 IOL (max) (mA) 12 IOH (max) (mA) -12 Supply current (max) (µA) 40 Features Balanced outputs, Bus-hold, Damping resistors, Flow-through pinout, Over-voltage tolerant inputs, Very high speed (tpd 5-10ns) Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 16 Technology family ALVC Input type Standard CMOS Output type 3-State Clock frequency (max) (MHz) 150 IOL (max) (mA) 12 IOH (max) (mA) -12 Supply current (max) (µA) 40 Features Balanced outputs, Bus-hold, Damping resistors, Flow-through pinout, Over-voltage tolerant inputs, Very high speed (tpd 5-10ns) Operating temperature range (°C) -40 to 85 Rating Catalog
TSSOP (DGG) 48 101.25 mm² (12.5 mm × 8.1 mm) SSOP (DL) 48 164.358 mm² (15.88 mm × 10.35 mm)
  • Member of the Texas Instruments Widebus™ Family
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Output Ports Have Equivalent 26- Series Resistors, So No External Resistors Are Required
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

Widebus is a trademark of Texas Instruments.
  • Member of the Texas Instruments Widebus™ Family
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Output Ports Have Equivalent 26- Series Resistors, So No External Resistors Are Required
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

Widebus is a trademark of Texas Instruments.

This 16-bit transparent D-type latch is designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCH162373 is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. This device can be used as two 8-bit latches or one 16-bit latch. When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the levels set up at the D inputs.

A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without need for interface or pullup components. OE\ does not affect internal operations of the latch. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The outputs, which are designed to sink up to 12 mA, include equivalent 26- resistors to reduce overshoot and undershoot.

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 holds unused or undriven data inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

This 16-bit transparent D-type latch is designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCH162373 is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. This device can be used as two 8-bit latches or one 16-bit latch. When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the levels set up at the D inputs.

A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without need for interface or pullup components. OE\ does not affect internal operations of the latch. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The outputs, which are designed to sink up to 12 mA, include equivalent 26- resistors to reduce overshoot and undershoot.

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 holds unused or undriven data inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 SN74ALVCH162373 数据表 (Rev. A) 2004-10-20
应用手册 Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 2022-12-15
应用手册 An Overview of Bus-Hold Circuit and the Applications (Rev. B) 2018-9-17

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仿真模型

SN74ALVCH162373 IBIS Model

SCEM484.ZIP (64 KB) - IBIS 模型
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TSSOP (DGG) 48 Ultra Librarian
SSOP (DL) 48 Ultra Librarian
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