米6体育平台手机版

ZHCSQ80D November 1998 – March 2022 CD54HC251 , CD54HCT251 , CD74HC251 , CD74HCT251

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机械数据 (封装 | 引脚)

J|16

散热焊盘机械数据 (封装 | 引脚)

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5.4 Electrical Characteristics

PARAMETER		TEST CONDITIONS⁽¹⁾	V_CC (V)	25°C			–40°C to 85°C		–55°C to 125°C		UNIT
PARAMETER		TEST CONDITIONS⁽¹⁾	V_CC (V)	MIN	TYP	MAX	MIN	MAX	MIN	MAX	UNIT
HC TYPES
V_IH	High-level input voltage		2	1.5			1.5		1.5		V
			4.5	3.15			3.15		3.15		V
			6	4.2			4.2		4.2		V
V_IL	Low-level input voltage		2			0.5		0.5		0.5	V
			4.5			1.35		1.35		1.35	V
			6			1.8		1.8		1.8	V
V_OH	High-level output voltage CMOS loads	I_OH = – 20μA	2	1.9			1.9		1.9		V
		I_OH = – 20μA	4.5	4.4			4.4		4.4		V
		I_OH = – 20μA	6	5.9			5.9		5.9		V
	High-level output voltage TTL loads	I_OH = – 6mA	4.5	3.98			3.84		3.7		V
	High-level output voltage TTL loads	I_OH = – 7.8mA	6	5.48			5.34		5.2		V
V_OL	Low-level output voltage CMOS loads	I_OL = 20μA	2			0.1		0.1		0.1	V
		I_OL = 20μA	4.5			0.1		0.1		0.1	V
		I_OL = 20μA	6			0.1		0.1		0.1	V
	Low-level output voltage TTL loads	I_OL = 6mA	4.5			0.26		0.33		0.4	V
	Low-level output voltage TTL loads	I_OL = 7.8mA	6			0.26		0.33		0.4	V
I_I	Input leakage current	V_CC or GND	6			±0.1		±1		±1	µA
I_CC	Supply current	V_CC or GND	6			8		80		160	µA
I_OZ	Three-state leakage current		6			±0.5		±0.5		±10	µA
HCT TYPES
V_IH	High-level input voltage		4.5 to 5.5	2			2		2		V
V_IL	Low-level input voltage		4.5 to 5.5			0.8		0.8		0.8	V
V_OH	High-level output voltage CMOS loads	I_OH = – 20μA	4.5	4.4			4.4		4.4		V
V_OH	High-level output voltage TTL loads	I_OH = – 6mA	4.5	3.98			3.84		3.7		V
V_OL	Low-level output voltage CMOS loads	I_OL = 20μA	4.5			0.1		0.1		0.1	V
V_OL	Low-level output voltage TTL loads	I_OL = 6mA	4.5			0.26		0.33		0.4	V
I_I	Input leakage current	V_CC and GND	5.5			±0.1		±1		±1	µA
I_CC	Supply Current	V_CC and GND	5.5			8		80		160	µA
I_OZ	Three-state leakage current		6			±0.5		±5.0		±10	µA
∆I_CC ⁽²⁾⁽³⁾	Additional supply current per input pin	S0, S1, S2	4.5 to 5.5		55	198		247.5		269.5	µA
		I0 - I7	4.5 to 5.5		50	180		225		245	µA
		OE	4.5 to 5.5		265	954		1192.5		1298.5	µA

(1) V_I = V_IH or V_IL, unless otherwise noted.

(2) For dual-supply systems theoretical worst case (V_I = 2.4 V, V_CC = 5.5 V) specification is 1.8 mA..

(3) Inputs held at V_CC – 2.1.