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    首頁產(chǎn)品索引MC74HC259A

    MC74HC259A

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    ?8-Bit Addressable Latch 1-of-8 Decoder

    制造商:ON

    中文數(shù)據(jù)手冊

    產(chǎn)品信息

    The MC74HC259A is identical in pinout to the LS259. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. The HC259A has four modes of operation as shown in the mode selection table. In the addressable latch mode, the data on Data In is written into the addressed latch. The addressed latch follows the data input with all non addressed latches remaining in their previous states. In the memory mode, all latches remain in their previous state and are unaffected by the Data or Address inputs. In the one of eight decoding or demultiplexing mode, the addressed output follows the state of Data In with all other outputs in the LOW state. In the Reset mode all outputs are LOW and unaffected by the address and data inputs. When operating the HC259A as an addressable latch, changing more than one bit of the address could impose a transient wrong address. Therefore, this should only be done while in the memory mode.
    • Output Drive Capability: 10 LSTTL Loads
    • Outputs Directly Interface to CMOS, NMOS, and TTL
    • Operating Voltage Range: 2 to 6 V
    • Low Input Current: 1 A
    • High Noise Immunity Characteristic of CMOS Devices
    • These are PbFree Devices

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    型號制造商描述購買
    NLV74HC259ADTR2GONMC74HC259A 與 LS259 的引腳輸出相同。該器件輸入兼容標(biāo)準(zhǔn)的 CMOS 輸出;帶有上拉電阻器,可兼容 LSTTL 輸出。HC259A 具有四種運行模式,如模式選擇表中所示。在可尋址鎖存模式下,數(shù)據(jù)輸入上的數(shù)據(jù)將寫入已尋址的鎖存。已尋址鎖存沿用數(shù)據(jù)輸入,所有未尋址鎖存保持在之前狀態(tài)。在內(nèi)存模式下,所有鎖存保持在之前狀態(tài),不受數(shù)據(jù)或地址輸入的影響。在 1/8 解碼或信號分離模式下,已尋址輸出遵循數(shù)據(jù)輸入的狀態(tài),所有其他輸出為低電平狀態(tài)。在重置模式下,所有輸出為低電平,不受地址和數(shù)據(jù)輸入影響。HC259A 作為可尋址鎖存運行時,更改地址的多個位可能會造成瞬變錯誤地址。因此,應(yīng)在內(nèi)存模式下完成此類更改。 立即購買
    MC74HC259ADTGONMC74HC259A 與 LS259 的引腳輸出相同。該器件輸入兼容標(biāo)準(zhǔn)的 CMOS 輸出;帶有上拉電阻器,可兼容 LSTTL 輸出。HC259A 具有四種運行模式,如模式選擇表中所示。在可尋址鎖存模式下,數(shù)據(jù)輸入上的數(shù)據(jù)將寫入已尋址的鎖存。已尋址鎖存沿用數(shù)據(jù)輸入,所有未尋址鎖存保持在之前狀態(tài)。在內(nèi)存模式下,所有鎖存保持在之前狀態(tài),不受數(shù)據(jù)或地址輸入的影響。在 1/8 解碼或信號分離模式下,已尋址輸出遵循數(shù)據(jù)輸入的狀態(tài),所有其他輸出為低電平狀態(tài)。在重置模式下,所有輸出為低電平,不受地址和數(shù)據(jù)輸入影響。HC259A 作為可尋址鎖存運行時,更改地址的多個位可能會造成瞬變錯誤地址。因此,應(yīng)在內(nèi)存模式下完成此類更改。 立即購買
    MC74HC259ADGON 立即購買
    MC74HC259ADTR2GON 立即購買
    MC74HC259ADR2GONMC74HC259A 與 LS259 的引腳輸出相同。該器件輸入兼容標(biāo)準(zhǔn)的 CMOS 輸出;帶有上拉電阻器,可兼容 LSTTL 輸出。HC259A 具有四種運行模式,如模式選擇表中所示。在可尋址鎖存模式下,數(shù)據(jù)輸入上的數(shù)據(jù)將寫入已尋址的鎖存。已尋址鎖存沿用數(shù)據(jù)輸入,所有未尋址鎖存保持在之前狀態(tài)。在內(nèi)存模式下,所有鎖存保持在之前狀態(tài),不受數(shù)據(jù)或地址輸入的影響。在 1/8 解碼或信號分離模式下,已尋址輸出遵循數(shù)據(jù)輸入的狀態(tài),所有其他輸出為低電平狀態(tài)。在重置模式下,所有輸出為低電平,不受地址和數(shù)據(jù)輸入影響。HC259A 作為可尋址鎖存運行時,更改地址的多個位可能會造成瞬變錯誤地址。因此,應(yīng)在內(nèi)存模式下完成此類更改。 立即購買
    NLVHC259ADR2G-- 立即購買

    技術(shù)資料

    標(biāo)題類型大小(KB)下載
    8-Bit Addressable LatchPDF128 點擊下載
    SOIC 16 LEADPDF37 點擊下載
    TSSOP-16PDF40 點擊下載

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