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TI产品 - CY74FCT16500T介绍

CY74FCT16500T - 具有三态输出的 18 位通用总线收发器

CY74FCT16500T是TI德州仪器公司的一款通用总线收发器(UBT)产品，CY74FCT16500T是具有三态输出的 18 位通用总线收发器，本站介绍了CY74FCT16500T的封装应用图解、特点和优点、功能等，并给出了与CY74FCT16500T相关的TI元器件型号供参考。

CY74FCT16500T - 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 can be operated in transparent, latched, or clock modes by combining D-type latches and D-type flip-flops. Data flow in each direction is controlled by output-enable (OEAB and OEBA\), latch enable (LEAB and LEBA), and clock inputs (CLKAB\ and CLKBA\) inputs. For A-to-B data flow, the device operates in transparent mode when LEAB is HIGH. When LEAB is LOW, the A data is latched if CLKAB\ is held at a HIGH or LOWlogic level. If LEAB is LOW, the A bus data is stored in the latch/flip-flop on the HIGH-to-LOWtransition of CLKAB\. OEAB performs the output enable function on the B port. Data flow from B-to-A is similar to that of A-to-B and is controlled by OEBA\, LEBA, and LKBA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The CY74FCT16500T is ideally suited for driving high-capacitance loads and low-impedance backplanes.

The CY74FCT162500T has 24-mA balanced output drivers with current limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for minimal undershoot and reduced ground bounce. The CY74FCT162500T is ideal for driving transmission lines.

产品特性

  • FCT-C speed at 4.6 ns
  • Ioff supports partial-power- mode operation
  • Edge-rate control circuitry for significantly improved noise characteristics
  • Typical output skew < 250 ps
  • ESD > 2000V
  • TSSOP (19.6-mil pitch) and SSOP (25-mil pitch) packages
  • Industrial temperature range of -40°C to +85°C
  • VCC = 5V ± 10%
  • CY74FCT16500T Features:
    • 64 mA sink current, 32 mA source current
    • Typical VOLP (ground bounce) <1.0V at VCC = 5V, TA = 25°C
  • CY74FCT162500T Features:
    • Balanced 24 mA output drivers
    • Reduced system switching noise
    • Typical VOLP (ground bounce) <0.6V at VCC = 5V, TA = 25°C

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