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SN74LV244A-EP 具有三态输出的增强型产品八路缓冲器/驱动器

This octal buffer/line driver is designed for 2-V to 5.5-V VCC operation.

The SN74LV244A-EP is designed specifically to improve both 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 line drivers with separate output-enable (OE) inputs. When OE is low, the device passes 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.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down

	SN74LV244A-EP
Voltage Nodes (V)	5/3.3/2.5
Vcc range (V)	2 to 5.5
Output Drive (Max) (mA)	0.05
tpd max (ns)	8.5
Rating	HiRel Enhanced Product
Technology Family	LV-A

SN74LV244A-EP 特性

• Controlled Baseline
  • One Assembly/Test Site, One Fabrication Site
• Extended Temperature Performance of -55°C to 125°C
• Enhanced Diminishing Manufacturing Sources (DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree(1)
• 2-V to 5.5-V VCC Operation
• Max tpd of 6.5 ns at 5 V
• Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C
• Typical VOHV (Output VOH Undershoot) >2.3 V at VCC = 3.3 V, TA = 25°C
• Supports Mixed-Mode Voltage Operation on All Ports
• Ioff Supports Partial-Power-Down Mode Operation
• Latch-Up Performance Exceeds 250 mA Per JESD 17
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 200-V Machine Model (A115-A)
  • 1000-V Charged-Device Model (C101)

SN74LV244A-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
SN74LV244AMDWREP	ACTIVE	-55 to 125	0.90 | 1ku	SOIC (DW) | 20	2000 | LARGE T&R
V62/06604-01XE	ACTIVE	-55 to 125	0.90 | 1ku	SOIC (DW) | 20	2000 | LARGE T&R

SN74LV244A-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

SN74LV244A-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
SN74LV244AMDWREP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LV244AMDWREP	SN74LV244AMDWREP
V62/06604-01XE	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	V62/06604-01XE	V62/06604-01XE

SN74LV244A-EP 应用技术支持与电子电路设计开发资源下载

1. SN74LV244A-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