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SN74AS821DW PDF预览

SN74AS821DW

更新时间: 2024-09-30 23:03:11
品牌 Logo 应用领域
德州仪器 - TI 触发器输出元件
页数 文件大小 规格书
6页 88K
描述
10-BIT BUS INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS

SN74AS821DW 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP, SOP24,.4针数:24
Reach Compliance Code:not_compliant风险等级:5.83
其他特性:POWER OFF DISABLE OUTPUTS TO PERMIT LIVE INSERTION系列:AS
JESD-30 代码:R-PDSO-G24长度:15.4 mm
负载电容(CL):50 pF逻辑集成电路类型:BUS DRIVER
位数:10功能数量:1
端口数量:2端子数量:24
最高工作温度:70 °C最低工作温度:
输出特性:3-STATE输出极性:TRUE
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP24,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:5 V最大电源电流(ICC):109 mA
传播延迟(tpd):10.5 ns认证状态:Not Qualified
座面最大高度:2.65 mm子类别:FF/Latches
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:TTL温度等级:COMMERCIAL
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
触发器类型:POSITIVE EDGE宽度:7.5 mm
Base Number Matches:1

SN74AS821DW 数据手册

 浏览型号SN74AS821DW的Datasheet PDF文件第2页浏览型号SN74AS821DW的Datasheet PDF文件第3页浏览型号SN74AS821DW的Datasheet PDF文件第4页浏览型号SN74AS821DW的Datasheet PDF文件第5页浏览型号SN74AS821DW的Datasheet PDF文件第6页 
SN54AS821, SN54AS822, SN74AS821, SN74AS822  
10-BIT BUS INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS  
SDAS230 – D2825, DECEMBER 1983 – REVISED JANUARY 1986  
SN54AS821 . . . JT PACKAGE  
SN74AS821 . . . DW OR NT PACKAGE  
(TOP VIEW)  
Functionally Equivalent to AMD’s AM29821  
and AM29822  
Provides Extra Data Width Necessary for  
Wider Address/Data Paths or Buses With  
Parity  
OC  
1D  
2D  
3D  
4D  
5D  
6D  
7D  
8D  
V
CC  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
1Q  
2Q  
3Q  
4Q  
5Q  
6Q  
7Q  
8Q  
9Q  
10Q  
2
Outputs Have Undershoot Protection  
Circuitry  
3
4
5
Powerup High-impedance State  
6
Package Options Include Plastic Small  
Outline Packages, Both Plastic and  
Ceramic Chip Carriers, and Standard  
Plastic and Ceramic 300-mil DIPs  
7
8
9
9D  
10D  
GND  
10  
11  
12  
Buffered Control Inputs to Reduce DC  
Loading Effects  
V
CC  
Dependable Texas Instruments Quality and  
Reliability  
description  
These 10-bit flip-flops feature 3-state outputs designed specifically for driving highly-capacitive or relatively  
low-impedance loads. They are particularly suitable for implementing wider buffer registers, I/O ports,  
bidirectional bus drivers with parity, and working registers.  
The ten flip-flops are edge-triggered D-type flip-flops. On the positive transition of the clock the Q outputs on  
the ’AS821 will be true, and on the ’AS822 will be complementary to the data input.  
A buffered output-control input can be used to place the ten outputs in either a normal logic state (high or low  
levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines  
significantly. The high-impedance state and increased drive provide the capability to drive the bus lines in a  
bus-organized system without need for interface or pullup components. The output control (OC) does not affect  
the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs  
are in the high-impedance state.  
The SN54AS’ family is characterized for operation over the full military temperature range of 55°C to 125°C.  
The SN74AS’ family is characterized for operation from 0°C to 70°C.  
SN54AS821 . . . FK PACKAGE  
SN74AS821 . . . FN PACKAGE  
SN54AS822 . . . JT PACKAGE  
SN74AS822 . . . DW OR NT PACKAGE  
SN54AS822 . . . FK PACKAGE  
SN74AS822 . . . FN PACKAGE  
(TOP VIEW)  
(TOP VIEW)  
(TOP VIEW)  
OC  
1D  
2D  
3D  
4D  
5D  
6D  
7D  
8D  
V
CC  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
1Q  
2Q  
3Q  
4Q  
5Q  
6Q  
7Q  
8Q  
9Q  
10Q  
CLK  
2
3
4
4
3
2
1
28 27 26  
3 2 1 28 27 26  
5
5
25 3Q  
25 3Q  
3D  
4D  
5D  
NC  
6D  
7D  
8D  
3D  
4D  
5D  
NC  
6D  
7D  
8D  
4
6
4Q  
5Q  
NC  
6Q  
7Q  
8Q  
6
4Q  
5Q  
NC  
6Q  
7Q  
8Q  
24  
23  
22  
21  
20  
19  
24  
23  
22  
21  
20  
19  
5
7
7
6
8
8
7
9
9
8
10  
10  
9
11  
11  
9D  
10D  
GND  
10  
11  
12  
12 13 14 15 16 17 18  
12 13 14 15 16 17 18  
NC–No internal connection  
Copyright 1986, Texas Instruments Incorporated  
5BASIC  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

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