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ZHCSPC0D November 1997 – November 2021 CD54HC259 , CD54HCT259 , CD74HC259 , CD74HCT259

PRODUCTION DATA

请参考 PDF 数据表获取器件具体的封装图。

7.3 Device Functional Modes

The Function Tableand Latch Selection Table below list the functional modes of the CDx4HC(T)259.

Table 7-1 Function Table

INPUTS⁽¹⁾		OUTPUT OF ADDRESSED LATCH⁽²⁾	EACH OTHER OUTPUT⁽²⁾	FUNCTION
CLR	G	OUTPUT OF ADDRESSED LATCH⁽²⁾	EACH OTHER OUTPUT⁽²⁾	FUNCTION
H	L	D	Q_iO	Addressable latch
H	H	Q_iO	Q_iO	Memory
L	L	D	L	8-line demultiplexer
L	H	L	L	Clear

(1) H = High voltage level, L = Low voltage level

(2) Q_iO = Previous output state of selected latch, D = Data input logic value

Table 7-2 Latch Selection Table

(1) H = High Voltage Level, L = Low Voltage Level