米6体育平台手机版

ZHCSPT2E September 1997 – October 2022 CD54HC688 , CD54HCT688 , CD74HC688 , CD74HCT688

PRODMIX

请参考 PDF 数据表获取器件具体的封装图。

5.5 Switching Characteristics

C_L = 50pF. Input t_r, t_f = 6 ns

PARAMETER		V_CC (V)	25℃			–40℃ to 85℃		–55℃ to 125℃		UNIT
PARAMETER		V_CC (V)	MIN	TYP	MAX	MIN	MAX	MIN	MAX	UNIT
HC TYPES
t_PLH, t_PHL	Propagation delay (Figure 6-1) An to output	2			170		210		255	ns
		4.5		14^⁽³⁾	34		42		51
		6			29		36		43
t_PLH, t_PHL	Bn to output	2			170		210		255	ns
		4.5		14^⁽³⁾	34		42		51
		6			29		36		43
t_PLH, t_PHL	E to output	2			120		150		180	ns
		4.5		9^⁽³⁾	24		30		36
		6			20		26		30
t_TLH, t_THL	Output transition time (Figure 6-1)	2			75		95		110	ns
		4.5			15		19		22
		6			13		16		19
C_IN	Input capacitance				10		10		10	pF
C_PD	Power dissipation capacitance⁽¹⁾⁽²⁾			22^⁽⁴⁾						pF
HCTTYPES
t_PLH, t_PHL	Propagation delay (Figure 6-1) An to output	4.5		14^⁽³⁾	34		42		51	ns
t_PLH, t_PHL	Bn to output	4.5		14^⁽³⁾	34		42		51	ns
t_PLH, t_PHL	E to output	4.5		9^⁽³⁾	24		30		36	ns
t_TLH, t_THL	Output transition time (Figure 6-1)	4.5			15		19		22	ns
C_IN	Input capacitance				10		10		10	pF
C_PD	Power dissipation capacitance⁽¹⁾⁽²⁾	5		22^⁽⁴⁾						pF

(1) C_PD is used to determine the dynamic power consumption, per gate.

(2) P_D = V_CC² f_i (C_PD + C_L) where f_i = input frequency, C_L = output load capacitance, V_CC = supply voltage.

(3) C_L = 15 pF and V_CC = 5 V.

(4) C_L = 15 pF.