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TI产品 - SN74ABTH16260介绍

SN74ABTH16260 - 具有三态输出的 12 位至 24 位多路复用 D 类锁存器

SN74ABTH16260是TI德州仪器公司的一款D类锁存器产品,SN74ABTH16260是具有三态输出的 12 位至 24 位多路复用 D 类锁存器,本站介绍了SN74ABTH16260的封装应用图解、特点和优点、功能等,并给出了与SN74ABTH16260相关的TI元器件型号供参考。

SN74ABTH16260 - 具有三态输出的 12 位至 24 位多路复用 D 类锁存器 - D类锁存器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

The SN54ABT16260 and SN74ABTH16260 are 12-bit to 24-bit multiplexed D-type latches used in applications in which two separate data paths must be multiplexed onto, or demultiplexed from, a single data path. Typical applications include multiplexing and/or demultiplexing of address and data information in microprocessor or bus-interface applications. This device is also useful in memory-interleaving applications.

Three 12-bit I/O ports (A1-A12, 1B1-1B12, and 2B1-2B12) are available for address and/or data transfer. The output-enable (OE1B\, OE2B\, and OEA\) inputs control the bus-transceiver functions. The OE1B\ and OE2B\ control signals also allow bank control in the A-to-B direction.

Address and/or data information can be stored using the internal storage latches. The latch-enable (LE1B, LE2B, LEA1B, and LEA2B) inputs are used to control data storage. When the latch-enable input is high, the latch is transparent. When the latch-enable input goes low, the data present at the inputs is latched and remains latched until the latch-enable input is returned high.

When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 2.1 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.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

The SN54ABT16260 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABTH16260 is characterized for operation from -40°C to 85°C.

产品特性

  • Members of the Texas Instruments WidebusTM Family
  • State-of-the-Art EPIC-II BTM BiCMOS Design Significantly Reduces Power Dissipation
  • ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
  • Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
  • Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C
  • High-Impedance State During Power Up and Power Down
  • Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise
  • Flow-Through Architecture Optimizes PCB Layout
  • High-Drive Outputs (-32-mA IOH, 64-mA IOL)
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Package Options Include Plastic 300-mil Shrink Small-Outline (DL) Package and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings

    Widebus and EPIC-IIB are trademarks of Texas Instruments Incorporated.

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