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SN74ACT244-EP 具有三态输出的增强型产品八路缓冲器/驱动器

The SN74ACT244-EP octal buffer/driver is designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.

The device is organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver

	SN74ACT244-EP
Voltage Nodes (V)	5
Vcc range (V)	4.5 to 5.5
Logic	True
Input Level	TTL
Output Level	CMOS
Output Drive (mA)	-24/24
No. of Outputs	8
tpd max (ns)	9
Static Current	0.04
Rating	HiRel Enhanced Product
Technology Family	ACT

SN74ACT244-EP 特性

• Controlled Baseline
  • One Assembly/Test Site, One Fabrication Site
• Extended Temperature Performance of up to -55°C to 125°C
• Enhanced Diminishing Manufacturing Sources (DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree(1)
• 4.5-V to 5.5-V VCC Operation
• Inputs Accept Voltages to 5.5 V
• Max tpd of 9.5 ns at 5 V
• Inputs Are TTL Compatible

SN74ACT244-EP 芯片订购指南

器件	状态	温度	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
SN74ACT244IDWREP	ACTIVE	-40 to 85	0.56 | 1ku	SOIC (DW) | 20	2000 | LARGE T&R
SN74ACT244MDWREP	ACTIVE	-55 to 125	1.15 | 1ku	SOIC (DW) | 20	2000 | LARGE T&R
SN74ACT244MNSREP	ACTIVE	-55 to 125	1.40 | 1ku	SO (NS) | 20	2000 | LARGE T&R
V62/04620-01XE	ACTIVE	-55 to 125	1.15 | 1ku	SOIC (DW) | 20	2000 | LARGE T&R
V62/04620-01YE	ACTIVE	-55 to 125	1.40 | 1ku	SO (NS) | 20	2000 | LARGE T&R
V62/04620-02XE	ACTIVE	-40 to 85	0.56 | 1ku	SOIC (DW) | 20	2000 | LARGE T&R

SN74ACT244-EP 应用手册

标题	类型	大小
选择合适的德州仪器 (TI) 信号开关	PDF	1091
CMOS 非缓冲反向器在振荡器电路中的使用	PDF	951
选择正确的电平转换解决方案 (Rev. A)	PDF	635
How to Select Little Logic	PDF	959
Shelf-Life Evaluation of Lead-Free Component Finishes	PDF	1310
Understanding and Interpreting Standard-Logic Data Sheets	PDF	857
Texas Instruments Little Logic Application Report	PDF	359
TI IBIS File Creation, Validation, and Distribution Processes	PDF	380
16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA	PDF	895
Power-Up 3-State (PU3S) Circuits in TI Standard Logic Devices	PDF	209
Implications of Slow or Floating CMOS Inputs	PDF	101
Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices	PDF	115
Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs	PDF	105
CMOS Power Consumption and CPD Calculation	PDF	89
LVC Characterization Information	PDF	114
Live Insertion	PDF	150
Input and Output Characteristics of Digital Integrated Circuits	PDF	1708
Understanding Advanced Bus-Interface Products Design Guide	PDF	253

SN74ACT244-EP 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
SN74ACT244IDWREP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT244IDWREP	SN74ACT244IDWREP
SN74ACT244MDWREP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT244MDWREP	SN74ACT244MDWREP
SN74ACT244MNSREP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT244MNSREP	SN74ACT244MNSREP
V62/04620-01XE	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	V62/04620-01XE	V62/04620-01XE
V62/04620-01YE	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	V62/04620-01YE	V62/04620-01YE
V62/04620-02XE	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	V62/04620-02XE	V62/04620-02XE

SN74ACT244-EP 应用技术支持与电子电路设计开发资源下载

1. SN74ACT244-EP 数据资料 dataSheet 下载.PDF
2. TI 德州仪器缓冲器、驱动器/收发器产品选型与价格 . xls
3. (选择指南)逻辑器件指南 2009 (Rev. Z)
4. (选择指南)小尺寸逻辑器件指南 (Rev. D)
5. (用户指南)LOGIC Pocket Data Book
6. (用户指南)Signal Switch Data Book
7. (用户指南)LVC and LV Low-Voltage CMOS Logic Data Book
8. (解决方案指南)2008年第一季度通信基础设施方案指南 (Rev. G)
9. (解决方案指南)Communications Infrastructure Solutions Guide 1Q2010