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SN74LVCH244ADGVRE4

更新时间： 2024-11-23 05:16:59
品牌 Logo 应用领域
德州仪器 - TI 总线驱动器总线收发器逻辑集成电路光电二极管
页数 文件大小 规格书
23页 665K
描述
OCTAL BUFFERS/DRIVERS OCTAL BUFFERS/DRIVERS

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SN74LVCH244ADGVRE4 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：TSSOP, TSSOP20,.25,16针数：20
Reach Compliance Code：unknownHTS代码：8542.39.00.01
风险等级：5.46Is Samacsys：N
控制类型：ENABLE LOW系列：LVC/LCX/Z
JESD-30 代码：R-PDSO-G20JESD-609代码：e4
长度：5 mm逻辑集成电路类型：BUS DRIVER
最大I（ol）：0.024 A湿度敏感等级：1
位数：4功能数量：2
端口数量：2端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
输出特性：3-STATE输出极性：TRUE
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP20,.25,16封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH包装方法：TR
峰值回流温度（摄氏度）：260电源：3.3 V
Prop。Delay @ Nom-Sup：5.9 ns传播延迟（tpd）：6.9 ns
认证状态：Not Qualified座面最大高度：1.2 mm
子类别：Bus Driver/Transceivers最大供电电压 (Vsup)：3.6 V
最小供电电压 (Vsup)：1.65 V标称供电电压 (Vsup)：1.8 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：0.4 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4.4 mmBase Number Matches：1

SN74LVCH244ADGVRE4 数据手册

 浏览型号SN74LVCH244ADGVRE4的Datasheet PDF文件第2页浏览型号SN74LVCH244ADGVRE4的Datasheet PDF文件第3页浏览型号SN74LVCH244ADGVRE4的Datasheet PDF文件第4页浏览型号SN74LVCH244ADGVRE4的Datasheet PDF文件第5页浏览型号SN74LVCH244ADGVRE4的Datasheet PDF文件第6页浏览型号SN74LVCH244ADGVRE4的Datasheet PDF文件第7页 
SN54LVCH244A, SN74LVCH244A  
OCTAL BUFFERS/DRIVERS  
WITH 3-STATE OUTPUTS  
www.ti.com  
SCES009O–JULY 1995–REVISED FEBRUARY 2007  
FEATURES  
•
•
•
•
Operate From 1.65 V to 3.6 V  
Inputs Accept Voltages to 5.5 V  
Max tpd of 5.9 ns at 3.3 V  
•
•
•
•
Ioff Supports Partial-Power-Down Mode  
Operation  
Bus Hold on Data Inputs Eliminates the Need  
for External Pullup/Pulldown Resistors  
Typical VOLP (Output Ground Bounce)  
<0.8 V at VCC = 3.3 V, TA = 25°C  
Latch-Up Performance Exceeds 250 mA Per  
JESD 17  
•
•
Typical VOHV (Output VOH Undershoot)  
>2 V at VCC = 3.3 V, TA = 25°C  
ESD Protection Exceeds JESD 22  
–
–
–
2000-V Human-Body Model (A114-A)  
200-V Machine Model (A115-A)  
Support Mixed-Mode Signal Operation on All  
Ports  
(5-V Input/Output Voltage With 3.3-V VCC  
)
1000-V Charged-Device Model (C101)  
SN54LVCH244A . . . J OR W PACKAGE  
SN74LVCH244A . . . DB, DBQ, DGV, DW,  
NS, OR PW PACKAGE  
SN74LVCH244A . . . RGY PACKAGE  
(TOP VIEW)  
SN54LVCH244A . . . FK PACKAGE  
(TOP VIEW)  
(TOP VIEW)  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
1OE  
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
GND  
V
CC  
1
20  
3
9
2
1
20 19  
18  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2OE  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
2A2  
1Y4  
2A1  
4
5
6
7
8
19  
18  
17  
16  
15  
14  
13  
12  
2
3
4
5
6
7
8
9
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
2OE  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
2A2  
1Y4  
17  
16  
15  
14  
10 11 12 13  
10  
11  
DESCRIPTION/ORDERING INFORMATION  
The SN54LVCH244A octal buffer/line driver is designed for 2.7-V to 3.6-V VCC operation, and the  
SN74LVCH244A 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.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 1995–2007, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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