SN54LVCH244A 具有三态输出的八路缓冲器/驱动器

SN54LVCH244A 描述

The SN54LVCH244A octal buffer/line driver is designed for 2.7-V to 3.6-V VCC operation, and the SN54LVCH244A octal buffer/line driver is designed for 1.65-V to 3.6-V VCC operation.

These devices are organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, these devices pass data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.

These devices are 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.

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.

SN54LVCH244A SN74LVCH244A
Voltage Nodes(V) 3.3, 2.7, 2.5, 1.8   3.3, 2.7, 2.5, 1.8  
Vcc range(V) 2.0 to 3.6   2.0 to 3.6  
Logic True   True  
Input Level TTL/CMOS   TTL/CMOS  
Output Level LVTTL   LVTTL  
Output Drive(mA)   -24/24  
No. of Outputs 8   8  
tpd max(ns)   6.5  
Static Current   0.01  
Rating Military   Catalog  
Technology Family LVC   LVC
SN54LVCH244A 特性
SN54LVCH244A 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
SN54LVCH244ADW ACTIVE -40 to 85 0.28 | 1ku SOIC(DW) | 24 25 | TUBE LVC827A
SN54LVCH244ADWE4 ACTIVE -40 to 85 0.28 | 1ku SOIC(DW) | 24 25 | TUBE LVC827A
SN54LVCH244ADWG4 ACTIVE -40 to 85 0.28 | 1ku SOIC(DW) | 24 25 | TUBE LVC827A
SN54LVCH244A 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
SN54LVCH244ADW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN54LVCH244ADW SN54LVCH244ADW
SN54LVCH244ADWE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN54LVCH244ADWE4 SN54LVCH244ADWE4
SN54LVCH244ADWG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN54LVCH244ADWG4 SN54LVCH244ADWG4
SN54LVCH244A 应用技术支持与电子电路设计开发资源下载
  1. SN54LVCH244A 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. CMOS 非缓冲反向器在振荡器电路中的使用 (PDF 951 KB)
  4. Semiconductor Packing Methodology (PDF 3005 KB)
  5. 逻辑产品选择指南 2006/2007 (修订版 Z)(4462KB)
  6. 标准线性和逻辑产品 5 分钟指南 (786KB)
  7. 了解和解释标准逻辑数据表
  8. LOGIC Pocket Data Book (PDF 6001 KB)
  9. HiRel Unitrode Power Management Brochure (PDF 206 KB)
  10. Logic Cross-Reference (PDF 2938 KB)