米6体育平台手机版

ZHCSOD3F December 1982 – June 2021 SN54HC74 , SN74HC74

PRODUCTION DATA

请参考 PDF 数据表获取器件具体的封装图。

6.7 Timing Requirements - 74

over operating free-air temperature range (unless otherwise noted)

			V_CC	Operating free-air temperature (T_A)						UNIT
				25°C			–40°C to 85°C
				MIN	TYP	MAX	MIN	TYP	MAX
f_clock	Clock frequency		2 V			6			5	MHz
			4.5 V			31			25
			6 V	0		36	0		29
t_w	Pulse duration	PRE or CLR low	2 V			100			125	ns
			4.5 V			20			25
			6 V			14			21
		CLK high or low	2 V			80			100
			4.5 V			16			20
			6 V			14			17
t_su	Setup time before CLK↑	Data	2 V			100			125	ns
			4.5 V			20			25
			6 V			17			21
		PRE or CLR inactive	2 V			25			30
			4.5 V			5			6
			6 V			4			5
_th	Hold time, data after CLK↑		2 V	0			0			ns
			4.5 V	0			0
			6 V	0			0