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TI产品 - SN74ABT162500介绍

SN74ABT162500 - 具有三态输出的 18 位通用总线收发器

SN74ABT162500是TI德州仪器公司的一款通用总线收发器(UBT)产品，SN74ABT162500是具有三态输出的 18 位通用总线收发器，本站介绍了SN74ABT162500的封装应用图解、特点和优点、功能等，并给出了与SN74ABT162500相关的TI元器件型号供参考。

SN74ABT162500 - 具有三态输出的 18 位通用总线收发器 - 通用总线收发器(UBT) - 通用总线功能 - 德州仪器

产品描述

These 18-bit universal bus transceivers combine D-type latches and D-type flip-flops to allow data flow in transparent, latched, and clocked modes. Data flow in each direction is controlled by output-enable (OEAB and OEBA\), latch-enable (LEAB and LEBA), and clock (CLKAB\ and CLKBA\) inputs.

For A-to-B data flow, the device operates in the transparent mode when LEAB is high. When LEAB is low, the A data is latched if CLKAB\ is held at a high or low logic level. If LEAB is low, the A data is stored in the latch/flip-flop on the high-to-low transition of CLKAB\. Output-enable OEAB is active high. When OEAB is high, the outputs are active. When OEAB is low, the outputs are in the high-impedance state.

Data flow for B to A is similar to that of A to B but uses OEBA\, LEBA, and CLKBA\. The output enables are complementary (OEAB is active high and OEBA\ is active low).

The B-port outputs, which are designed to source or sink up to 12 mA, include equivalent 25- series resistors to reduce overshoot and undershoot.

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 and OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sinking/current-sourcing capability of the driver.

The SN54ABT162500 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT162500 is characterized for operation from -40°C to 85°C.

A-to-B data flow is shown: B-to-A flow is similar but uses OEBA\, LEBA, and CLKBA\.

Output level before the indicated steady-state input conditions were established

§ Output level before the indicated steady-state input conditions were established, provided that CLKAB\ was low before LEAB went low

产品特性

  • Members of the Texas Instruments WidebusTM Family
  • B-Port Outputs Have Equivalent 25- Series Resistors, So No External Resistors Are Required
  • State-of-the-Art EPIC-II BTM BiCMOS Design Significantly Reduces Power Dissipation
  • UBTTM (Universal Bus Transceiver) Combines D-Type Latches and D-Type Flip-Flops for Operation in Transparent, Latched, or Clocked Mode
  • Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 5 V, TA = 25°C
  • High-Impedance State During Power Up and Power Down
  • Flow-Through Architecture Optimizes PCB Layout
  • Latch-Up Performance Exceeds 500 mA Per JESD 17
  • ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
  • Package Options Include Plastic Shrink Small-Outline (DL) Package and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings

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

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