米6体育平台手机版

ZHCSPT8G November 1988 – July 2022 SN74HCT273

PRODUCTION DATA

请参考 PDF 数据表获取器件具体的封装图。

6.5 Timing Requirements

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

PARAMETER			V_CC	T_A = 25°C		SN54HCT273⁽¹⁾		SN74HCT273		UNIT
PARAMETER			V_CC	MIN	MAX	MIN	MAX	MIN	MAX	UNIT
f_clock	Clock frequency		4.5 V		25		16		20	MHz
f_clock	Clock frequency		5.5 V		28		19		23	MHz
t_w	Pulse duration	CLK high or low	4.5 V	20		30		25		ns
		CLK high or low	5.5 V	18		25		22
		CLR low	4.5 V	16		24		20
		CLR low	5.5 V	14		20		17
t_su	Setup time before CLK↑	Data	4.5 V	20		30		25		ns
		Data	5.5 V	17		25		21
		CLR inactive	4.5 V	20		30		25
		CLR inactive	5.5 V	17		25		21
t_h	Hold time, data after CLK↑		4.5 V	0		0		0		ns
t_h	Hold time, data after CLK↑		5.5 V	0		0		0		ns

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