SCLS087 Data sheet

SCLS087F December 1982 – June 2021 SN54HC21 , SN74HC21

PRODUCTION DATA

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6.2 Recommended Operating Conditions

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

			MIN	NOM	MAX	UNIT
V_CC	Supply voltage		2	5	6	V
V_IH	High-level input voltage	V_CC = 2 V	1.5			V
		V_CC = 4.5 V	3.15
		V_CC = 6 V	4.2
V_IL	Low-level input voltage	V_CC = 2 V			0.5	V
		V_CC = 4.5 V			1.35
		V_CC = 6 V			1.8
V_I	Input voltage		0		V_CC	V
V_O	Output voltage		0		V_CC	V
t_t	Input transition rise and fall time	V_CC = 2 V			1000	ns
		V_CC = 4.5 V			500
		V_CC = 6 V			400
T_A	Operating free-air temperature	SN54HC21	–55		125	°C
T_A	Operating free-air temperature	SN74HC21	–40		85	°C