米6体育平台手机版

ZHCSQK2F December 1982 – May 2022 SN54HC244 , SN74HC244

PRODUCTION DATA

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)

DB|20
NS|20
N|20
DW|20
PW|20

散热焊盘机械数据 (封装 | 引脚)

订购信息

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)⁽¹⁾

			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
Δt/Δv	Input transition rise and fall time	V_CC = 2 V			1000	ns/V
		V_CC = 4.5 V			500
		V_CC = 6 V			400
C_pd	Power dissipation capacitance per buffer or driver (no load)			35		pF
T_A	Operating free-air temperature	SN54HC244	–55		125	°C
T_A	Operating free-air temperature	SN74HC244	–40		85	°C

(1) All unused inputs of the device must be held at V_CC or GND to ensure proper device operation. See the Texas Instruments application report, Implications of Slow or Floating CMOS Inputs, SCBA004.