參數(shù)資料
型號: MC74HC139ADT
廠商: ON SEMICONDUCTOR
元件分類: 編、解碼器及復(fù)用、解復(fù)用
英文描述: HC/UH SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封裝: TSSOP-16
文件頁數(shù): 6/6頁
文件大小: 81K
代理商: MC74HC139ADT
MC74HC139A
http://onsemi.com
68
PIN DESCRIPTIONS
ADDRESS INPUTS
A0a, A1a, A0b, A1b (Pins 2, 3, 14, 13)
Address inputs. These inputs, when the respective 1of4
decoder is enabled, determine which of its four activelow
outputs is selected.
CONTROL INPUTS
Selecta, Selectb (Pins 1, 15)
Activelow select inputs. For a low level on this input, the
outputs for that particular decoder follow the Address
inputs. A high level on this input forces all outputs to a high
level.
OUTPUTS
Y0a Y3a, Y0b Y3b (Pins 4 7, 12, 11, 10, 9)
Activelow outputs. These outputs assume a low level
when addressed and the appropriate Select input is active.
These outputs remain high when not addressed or the
appropriate Select input is inactive.
SELECT
A0
A1
Y0
Y1
Y2
Y3
Figure 6. Expanded Logic Diagram
(1/2 of Device)
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相關(guān)代理商/技術(shù)參數(shù)
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