ZHCSWZ9 数据表 | 德州仪器 TI.com.cn

ZHCSWZ9A August 1998 – August 2024 CD74AC251

PRODUCTION DATA

4.5 Switching Characteristics

Input t_r, t_f = 3ns, C_L = 50pF (Worst Case)

SYMBOL	PARAMETER	V_CC (V)	-40°C TO 85°C			-55°C TO 125°C			UNIT
SYMBOL	PARAMETER	V_CC (V)	MIN	TYP	MAX	MIN	TYP	MAX	UNIT
t_PLH, t_PHL	Propagation delay, data to Y output	1.5	-	-	153	-	-	169	ns
		3.3⁽¹⁾	4.9	-	17.2	4.7	-	18.9	ns
		5⁽²⁾	3.5	-	12.3	3.4	-	13.5	ns
t_PLH, t_PHL	Propagation delay, data to Y output	1.5	-	-	169	-	-	186	ns
		3.3	5.4	-	19	5.2	-	20.9	ns
		5	3.8	-	13.5	3.7	-	14.9	ns
t_PLH, t_PHL	Propagation delay, select to Y output	1.5	-	-	207	-	-	228	ns
		3.3	6.6	-	23.2	6.4	-	25.5	ns
		5	4.7	-	16.5	4.6	-	18.2	ns
t_PLH, t_PHL	Propagation Delay, Select to Y Output	1.5	-	-	223	-	-	245	ns
		3.3	7.1	-	24.9	6.9	-	27.4	ns
		5	5.1	-	17.8	4.9	-	19.6	ns
t_PZH, t_PZL, t_PHZ, t_PLZ	Propagation delay, output enable and output disable to output	1.5	-	-	155	-	-	169	ns
		3.3	5.2	-	18.7	5.1	-	20.3	ns
		5	3.5	-	12.3	3.4	-	13.5	ns
C_O	Three-state output capacitance	-	-	-	15	-	-	15	pF
C_I	Input capacitance	-	-	-	10	-	-	10	pF
C_PD⁽³⁾	Power dissipation capacitance	-	-	120	-	-	120	-	pF

(1) 3.3V Min is at 3.6V, Max is at 3V.

(2) 5V Min is at 5.5V, Max is at 4.5V.

(3) C_PD is used to determine the dynamic power consumption per device.

Note: P_D = V_CC ² f_i (C_PD + C_L) where f_i = input frequency, C_L = output load capacitance, V_CC = supply voltage.